GOST 2.302-68

Group T52

INTERSTATE STANDARD

Unified system of design documentation

SCALE

Unified system for design documentation. Scales

ISS 01.100.01

Date of introduction 1971-01-01

APPROVED by the Resolution of the Committee of Standards, Measures and measuring instruments under the Council of Ministers of the USSR dated May 28, 1968 N 752

INSTEAD GOST 3451-59

Change No. 2 was adopted by the Interstate Council for Standardization, Metrology and Certification (Minutes No. 17 of June 22, 2000)

The following voted to approve the change:

State name	Name of the national standardization body
Azerbaijan Republic	Azgosstandart
Republic of Belarus	State Standard of the Republic of Belarus
Kyrgyz Republic	Kyrgyzstandard
Republic of Moldova	Moldovastandard
Russian Federation	Gosstandart of Russia
Republic of Tajikistan	Tajikgosstandart
Turkmenistan	Main State Inspectorate “Turkmenstandartlary”
Republic of Uzbekistan	Uzgosstandart
	State Standard of Ukraine

Change No. 3 was adopted by the Interstate Council for Standardization, Metrology and Certification by correspondence (Minutes No. 23 of February 28, 2006).

The national standardization bodies of the following states voted for the adoption of the change: AZ, AM, BY, KZ, KG, MD, RU, TJ, TM, UZ, UA [alpha-2 codes according to MK (ISO 3166) 004]

EDITION (August 2007) with Amendments No. 1, , approved in February 1980, December 2000, June 2006 (IUS 4-80, 3-2001, 9-2006).

1. This standard establishes the scale of images and their designation on drawings of all industries and construction.

The standard does not apply to drawings obtained by photographing, as well as to illustrations in printed publications etc.

(Changed edition, Amendment No. 2).

2a. In this standard, the following terms with corresponding definitions apply:

scale: The ratio of the linear size of a segment in a drawing to the corresponding linear size of the same segment in real life;

life scale: Scale with 1:1 ratio.

zoom scale: A scale with a ratio greater than 1:1 (2:1, etc.).

reduction scale: A scale with a ratio less than 1:1 (1:2, etc.).

(Introduced additionally, Amendment No. 2).

2. The scales of images in the drawings must be selected from the following range:

Scale of reduction	1:2; 1:2,5; 1:4; 1:5; 1:10; 1:15; 1:20; 1:25; 1:40 1:50; 1:75; 1:100; 1:200; 1:400; 1:500; 1:800; 1:1000
Life size
Scale of increase	2:1; 2,5:1; 4:1; 5:1; 10:1; 20:1; 40:1; 50:1; 100:1

3. When designing master plans for large objects, it is allowed to use a scale of 1:2000; 1:5000; 1:10000; 1:20000; 1:25000; 1:50000.

4. If necessary, it is allowed to use magnification scales (100):1, where is an integer.

5. The scale indicated in the designated column of the title block of the drawing must be indicated as 1:1; 1:2; 2:1, etc.

Documents in electronic form must contain in their details part indicating the accepted image scale. When outputting documents in electronic form onto paper, the image scale must correspond to the specified one.

(Changed edition, Amendment No. 3).



Electronic document text
prepared by Kodeks JSC and verified against:
official publication
Unified system of design documentation:
Sat. GOST. - M.: Standartinform, 2007

Scale

scale of reduction:

scale of increase:

The main lines of the drawing, features of their outline in accordance with GOST.

In order for the drawing to be expressive and easy to read, it must be decorated with lines of varying thickness and style. The lines and their purposes are established by GOST 2.303-68*.

The main line of the drawing is the visible contour line. The thickness of the solid main line s should be in the range from 0.5 to 1.4 mm, depending on the size and complexity of the image, as well as the format and purpose of the drawing.

Drawing lines.

Name		Line thickness	Main purpose
Solid main		s (0.5 to 1.4)	Visible contour line; visible transition lines; contour lines of the section (extracted and included in the section).
Solid thin		From s/3 to s/2 (from 0.2-0.5 to 0.3-0.75)	Contour lines of the superimposed section; dimensional and extension lines; hatch lines; leader lines; leader line shelves and label underlining; lines to depict boundary details; limit lines of extension elements in views, sections and sections; transition lines depicted; fold lines on developments; projection axis, traces of planes, lines of construction of characteristic points for special constructions.
Solid wavy		Break lines; demarcation lines between view and section
Line		Invisible contour lines; transition lines are invisible.
Line-dotted thin		Axial and center lines; section lines, which are axes of symmetry for superimposed or extended sections; lines for depicting parts of products in extreme or intermediate positions; lines for the scan image combined with the view.
Dash-dotted thickened		From s/2 to 2/3s (from 0.3-0.75 to 0.4-1)	Lines indicating surfaces to be heat treated or coated; lines for depicting elements located in front of the cutting plane.
Open		From s to 1.5s (from 0.6-1.5 to 0.9-2.25)	Section lines
Solid thin with kinks		From s/3 to s/2 (from 0.2-0.5 to 0.3-0.75)	Long break lines
Dot-dash with two dots thin		From s/3 to s/2	Fold lines on developments; lines for depicting parts of products in extreme or intermediate positions and for depicting a scan combined with the view

Dashed-dotted lines should end with dashes, not dots. The center of the circle should be marked by the intersection of the strokes. In circles with a diameter of less than 12 mm, the dash-dotted lines used as center lines should be replaced with solid thin lines. Dimensional numbers and inscriptions should not intersect with drawing lines.

For the frames of drawings, tables, main inscriptions and specifications, solid lines of thickness s should be used.

Drawing fonts

On drawings and other technical documents, in addition to dimensional numbers, various inscriptions are applied both in the columns of the main inscription and in the field of the drawing - inscriptions indicating images, as well as those related to individual elements depicted product or building. Labels must be clear and legible.

GOST 2.304-81* establishes drawing fonts for handwritten inscriptions on drawings and technical documents of all industries and construction.

The inclination of the letters and numbers of this font to the base of the line is approximately 75 degrees.

Main inscriptions, headings, names may be written in straight letters. Inscriptions can be made only from capital letters or in a combination of uppercase and lowercase letters.

The font size is determined by the height h of the capital letters (in millimeters).

Installed following sizes font: 2.5; 3.5; 5; 7; 10; 14; 20; 28; 40.

When writing numbers and letters, keep the following in mind:

For all text, the thickness of the stroke lines should be the same;

the lower branches of the letter D and the upper sign of the letter Y should be made due to the spaces between the lines, and the lower and lateral processes of the letters C and Ш - due to the spaces between the lines and letters;

a capital letter in a word with lowercase letters must have the same line thickness as lowercase letters;

the height of lowercase letters is 7/10 of the height of uppercase letters;

the width of most capital letters is 6/10 h

the width of the letters A, D, M, X, Y, Yu is 7/10h, and the letters ZH, F, Ш, Б – 8/10h

The width of lowercase letters and Arabic numerals, except for the number 1, is 5/10h

The number 1 should be placed at a normal distance from adjacent numbers and letters.

the distance between lines must be at least the height of lowercase letters

with a seeming increase in the spaces between adjacent letters, for example G and A, G and a, R and D, T and L, etc., these spaces should be reduced.

Selecting the main type of part.

The drawing begins with the selection of the main image.

The main requirement for the main image is that it must convey the most complete idea of ​​the shape and dimensions of the part.

As the main image (front view), either a frontal section or a combination of the view and the section can be used.

Flat parts from sheet material depicted in one projection showing their contour images, the thickness of the part is indicated by a conventional notation.

To produce shaped parts from sheet material, precise developments or approximate blanks for pressed parts with drawing are required - these are flat parts made from sheet material.

The number of images (types, sections, sections) of an object in the drawing should be the smallest, but sufficient to identify its external and internal shape and should make it possible to rationally apply dimensions.

In some cases, one projection with the corresponding symbol placed next to the dimensional number gives a complete picture of the shape of the depicted object. So, for example, the diameter sign indicates that the depicted object is a body of rotation; the square sign means that the depicted object has the shape of a prism with a normal cross section in the form of a square; the word “sphere” written before the diameter icon indicates that the surface is spherical; the symbol "S" (thickness) in front of the dimension number replaces the second projection of the part, which has the shape of a parallelepiped, etc.

After analyzing the shape of a part, it is possible to determine which images are necessary to comprehensively convey the external and internal shapes of this part. For most parts of machines and mechanisms, it is enough to make 3 images, taking into account that to depict the invisible contours of the product you can use dashed lines, you can combine parts of the views with parts of the corresponding sections, use complex sections, etc.

Selecting the main image (especially for a part drawing) - the most important stage working on the drawing. If you make a mistake at this stage, nothing else will compensate for it. The drawing will be understood correctly by an experienced person, but reading will take a lot of time. A less experienced person will not only waste even more time, but may also misunderstand the contents of the drawing, resulting in a manufacturing defect.

Let's consider the procedure for selecting the main image, conditionally dividing it into three stages.

1.Determination of the viewing direction (projection direction) to form the main image.

2.Determining the content of the main image.

3.Selecting the position of the main image.

In assembly drawings, the main image should show the relative position of the main parts of the product, usually hidden from the view of the observer. Therefore, this image is a section, like most other images placed on the drawing.

Complex cuts.

A cut made by several cutting planes is called complex.

If a complex cut is obtained using parallel planes, then it is called stepped; if the cutting planes intersect, then it is called broken.

The position of the cutting plane is indicated in the drawing by a section line. An open line should be used for the section line. For a complex cut, strokes are also made at the bends of the section line.

For broken cuts, the secant planes are conventionally rotated until they are aligned into one plane, and the direction of rotation may not coincide with the direction of view. If the combined planes turn out to be parallel to one of the main projection planes, then the broken section can be placed in the place of the corresponding type. When rotating the secant plane, the elements of the object located behind it should be drawn as they are projected onto the corresponding plane to which the alignment occurs.

(Sections can be placed anywhere in the drawing, as well as rotated to a position corresponding to that accepted for a given item in the main image. In the latter case, the word “Rotated” should be added to the inscription.

It is also possible to separate the section and the type of dash-dotted thin line, coinciding with the trace of the plane of symmetry not of the entire object, but only of its part if it is represented as a body of rotation.)

Thin walls such as stiffeners, as well as flywheel spokes, are shown unshaded if the cutting plane is directed along the axis or long side of this element.

Also, parts such as bolts, screws, rivets, etc., are shown uncut in a longitudinal section. If such parts have a hole or other plane, it is necessary to make a local cut.

Local cut

If you need to identify the shape of an element in a small area of ​​a part, you don’t have to make a section of the entire part. In this case, only part of the corresponding section is shown. An incision that serves to clarify the structure of an object only in a separate limited place is called local. The local section is highlighted in the view by a solid wavy line, which should not coincide with any other lines in the image.

Section.

Section

(Sections that are not part of the section are divided into extended and superimposed. The extended section is depicted in a free space of the drawing, if possible close to the view to which it belongs. It is allowed to depict this section in a gap between parts of the same view.

The axis of symmetry of an extended or superimposed section is indicated by a thin dash-dotted line without letters or arrows. It is allowed to place the section anywhere in the drawing field, as well as with a rotation. In the latter case, the word “Rotated” must be added to the inscription.

GOST 2.306-68* provides special kind shading for various materials, from which the parts are made.)

15.Varieties of sections, their design in the drawing.

Section is the image of a flat figure resulting from the mental dissection of an object by a plane or several planes.

The section shows only what is obtained directly in the cutting plane.

In accordance with GOST 2.303-68, an open thickened line is used for the section line with arrows indicating the direction of view and designating it in the same capital letters of the Russian alphabet, and the section itself is accompanied by an inscription according to type A-A. IN construction drawings at the section line, instead of letters, it is allowed to use numbers, and also write the name of the section. The length of the arrow is selected within 10-25 mm. The arrows are applied at a distance of 2-3 mm from the end of the thickened stroke. The initial and final thick strokes should not intersect the outline of the image. For complex sections, it is allowed to connect the ends of an open line with a thin dash-dotted line. In construction drawings, for symmetrical sections, an open line is used with its designation, but without arrows.

Sections that are not part of the section are divided into extended and superimposed. The extended section is depicted in a free space in the drawing, if possible close to the view to which it belongs. It is allowed to depict this section in a gap between parts of the same type.

The superimposed section is placed directly on the object view.

Extended sections should be given preference over superimposed ones. The contour of the extended section should be depicted with solid main lines, and the contour of the superimposed section with solid thin lines, and the lines of the image of the object at the location of the superimposed section are not interrupted.

The axis of symmetry of an extended or superimposed section is indicated by a thin dash-dotted line without letters or arrows. It is allowed to place the section anywhere in the drawing field, as well as with a rotation. In the latter case, the word “Rotated” must be added to the inscription. For asymmetrical sections located in a gap or superimposed, the section line is drawn with arrows, but not marked with letters.

In views and sections, it is allowed to depict in a simplified manner the projections of the lines of intersection of surfaces, if their precise construction is not required.

GOST 2.306-68 provides a special type of shading for various materials from which parts are made.

The difference between a section and a section.

If an object is conditionally cut by a plane, mentally discard the cut-off part of it located in front of the secant plane, and project the remaining part from the side of the secant plane onto the projection plane, then such a projection is called a cut.

Consequently, a cut is an image of an object mentally dissected by one or more planes, while the mental dissection of an object relates only to this cut and does not entail a change in other images of the same object. The section shows what lies in the cutting plane (section) and what is located behind it.

A section is an image of a flat figure resulting from the mental dissection of an object by a plane or several planes.

The section shows only what is obtained directly in the cutting plane.

A section differs from a section in that it shows not only what is in the cutting plane, but also what is located behind it.

Using scales when depicting drawings.

Scale is a ratio that shows how many times the value of a line segment in a drawing is less or greater than the value of the corresponding line segment in kind.

Scales can be numerical or graphic. The latter are divided into linear, transverse and angular.

When drawing drawings using a numerical scale, you have to make arithmetic calculations to determine the size of the line segments drawn on the drawing.

To reduce calculations and quickly obtain the size of line segments drawn on a drawing on a certain scale, use scale ruler or construct a linear scale corresponding to the numerical scale.

The transverse scale makes it possible to express or determine the size with an error of up to hundredths of the basic unit of measurement.

In cases where it is necessary to construct an enlarged or reduced image, made according to a given drawing, the scale of which can be arbitrary, an angular scale is used.

The choice of drawing scale depends on the purpose of the drawing. And also on the complexity of the shapes of the object and structure, their sizes.

According to GOST 2.302-68, the following scales are used when making drawings:

scale of reduction:

1:2; 1:2.5; 1:4; 1:5; 1:10; 1:15; 1:20; 1:25; 1:40; 1:50; 1:75; 1:100; 1:200; 1;400; 1:500; 1:800; 1:1000; for life-size images M 1:1;

scale of increase:

2:1; 2.5:1; 4:1; 5:1; 10:1; 20:1; 40:1; 50:1; 100:1.

When designing master plans for large objects, it is recommended to use a scale of 1:2000; 1:5000; 1:10000; 1:20000; 1:25000; 1:50000.

The scale indicated in the designated column of the title block of the drawing is designated as 1:1; 1:2, etc., and in other cases - according to type M 1:1; M 1:2, etc.

Rice. 26. Part drawing without dimensions

Obviously, this cannot be done, since there are no dimensions.

Drawing dimensions on drawings is a very important operation that significantly affects the ease of reading the drawing.

Rules for applying dimensions are established by standards ESKD (GOST 2.307-68).

When applying dimensions, use conventional signs– S (thickness), ø (diameter), R (radius),  (square).

Sizes available linear and angular. Linear dimensions indicate the length, width, height, thickness, diameter or radius of the part being measured. Angular dimension denotes the size of the angle.

Linear dimensions in the drawings are indicated in millimeters, but the unit of measurement is not indicated.

Angular dimensions indicated in degrees, minutes and seconds with the designation of the unit of measurement.

The number of dimensions in the drawing should be minimal, but sufficient for the manufacture and control of the product.

To apply dimensions use remote And dimension lines, which are drawn with a continuous thin line.

Leader lines- lines that indicate size.

Dimension lines– the lines on which the size is placed ends with arrows at both ends. The arrows must touch the extension lines; the shape of the arrow is shown in Fig. 27.

Rice. 27. Arrow shape

The dimension line is always drawn parallel to the contour line of the part of the part whose size it defines and perpendicular to the extension lines. If the size is less than 12 mm, then the arrows are placed outside, and if more than 12 mm, then inside (Fig. 28). The dimension line is 10 mm away from the contour of the part drawing, the distance between parallel dimension lines must be at least 7-10 mm.

Extension lines extend beyond the ends of the arrows of the dimension line by 1-5 mm. The size is placed above the size line, closer to its middle.

Rice. 28. Examples of sizing

With a vertical dimension line, the dimension number is written to the left of it.

The same size is placed in the drawing only once.

First, the smaller size is taken out, and then the larger one. In the drawing, dimension lines should not intersect.

When specifying the size of an angle, the dimension line is drawn in the form of a circular arc with the center at the vertex of the angle.

Diameter sign is placed in front of the dimension number if the circle is drawn completely. The dimension line is drawn through the center of the circle. If the part has several identical holes, then the size is set once, indicating the number of holes (see Fig. 28).

Radius sign is placed when part of a circle is drawn, the dimension line is drawn from the center of the arc.

You should remember the basic concepts:

1) element sizes – dimensions of cutouts, protrusions, holes, grooves;

2) coordinating sizes – dimensions showing the location of the elements relative to the contour of the part and each other;

3) overall dimensions – the largest dimensions of the part in length, height, width.

In drawing practice, you have to draw images of very large parts (machine tools, ships, cars) and very small ones (clock mechanisms, precision instruments).

Is it possible to depict them in life size? Of course, it’s impossible, so large objects are depicted reduced, and small ones - enlarged, i.e. apply scale
(Fig. 29).

Rice. 29. Scale designation in the drawing

Scale– the ratio of the linear dimensions of the image of an object to its actual dimensions.

The scale of images and their designation are established by the standard (GOST 2.302-68).

natural size – 1:1 (one to one);

reduction scale – 1:2; 1:25;1:4;1:5; 1:10; 1:15;

magnification scale – 2:1; 2.5:1; 4:1; 5:1; 10:1; 15:1.

The scale is indicated by the letter M on the drawing field, for example M 1:2. The letter M is not placed in the main inscription. Whatever the scale of the drawing, the actual dimensions are always indicated.

Sometimes you have to determine the scale at which an object is drawn. In this case, they do this: determine the size of the side (for example, A) using a measuring ruler, it is equal to 50 mm. The actual length of the segment indicated in the drawing is 100 mm. Consequently, the scale is determined as the quotient of dividing 50 by 100 and is equal to 1:2 (Fig. 30).

Rice. 30. Determining the scale of a part in a drawing

Every computer graphics program has a Loupe tool. It allows you to instantly change the scale of an image (drawing, picture), increasing (decreasing) it to the desired size (Fig. 31).

Rice. 31. Using scale in computer programs Loupe tool

Drawing font

In a wide variety of fields of science, technology, and design, people use fonts to write letters, numbers, symbols and other symbols.

Font– a method of encoding text information.

Each type of graphic activity is characterized by certain fonts. In many cases, artistic elements (decorations) are added to the font, giving it greater expressiveness.

The main types of fonts that were most often used throughout historical development written culture of mankind are presented in Fig. 32.

Rice. 32. Types of font

Computer fonts are popular these days. All inscriptions on the drawings are made in drawing font - GOST 2.304-81.

GOST sets the following font numbers: 1.8 (not recommended, but allowed); 2.5;3.5;5;7;10, as well as the height, width of letters and the distance between letters.

For drawings made in A4 format, the following font numbers are recommended: 2.5; 3.5; 5; 7. The standard establishes two types of font - uppercase (capital letters) and lowercase. By design, uppercase and lowercase letters can be divided into three groups (Fig. 33).

Rice. 33. Drawing font

Capital letters:

Group 1 – G, P, N, T, E, C, Sh, Shch;

Group 2 – I, X, K, F, M, A, L, D;

Group 3 – Ch, U, B, V, R, Z, O, S, E, Y, F, S, L, Ъ.

Lowercase letters:

Group 1 – p, y, c, t, w, sch, i;

Group 2 – o, a, b, c, d, y, r, f, s;

Group 3 – f, b, i, g, g, h, j, l, m, n, x, h.

According to their proportions, they can be divided into wide and narrow: wide capitals - Ш, Ш, Ж, Ю, И, Ф; wide lowercase - t, sh, shch, yu, ы, m. The letters of the drawing font are written in a simplified form. The capital font number corresponds to the height of the letters, and the width corresponds to the smaller previous number, for example, font number 7, the height of the letters is 7, the width of the letters is 5. The width of wide letters corresponds to the height. The distance between letters is 2 mm.

The height of lowercase letters corresponds to the lower previous font number, and the width corresponds to the next previous number, for example, font number 7, letter height - 5, width - 3.5, the width of wide letters corresponds to the height of the letters. The distance between letters is 1.5 mm.

For correct execution letters at the initial stage use a grid.

The main inscription is filled in font No. 3.5; the title of the drawing is in font No. 7 or No. 5 (Fig. 34).

Rice. 34. Sample of filling out the title block

Remember, the stitches do not touch the frame line.

Scale is the ratio of the linear dimensions of an image in a drawing to its actual dimensions.

The scale of images and their designation in drawings is established by GOST 2.302-68 (Table 5.3). The scale indicated in the designated column of the title block of the drawing should be indicated as 1:1; 1:2; 1:4; 2:1; 5:1; etc.

Table 5.3 – Drawing scales

When designing master plans for large objects, it is allowed to use a scale of 1:2000; 1:5000; 1:10000; 1:20000; 1:25000; 1:50000.

5.3 Main inscription.

Each sheet is decorated with a frame, the lines of which are spaced from three sides of the format by 5 mm from the left side by 20 mm. The main inscription in accordance with GOST 2.104-68 is placed on the frame line in the lower right corner of the format. On A4 sheets, the main inscription is placed only along the short side. The type and thickness of lines in drawings, diagrams and graphs must comply with GOST 2.303-68. Drawings of the project design documentation are made in pencil. Schemes, graphs, and tables may be made in black ink (paste). All inscriptions on the drawing field, dimensional numbers, and filling in the main inscription are made only in drawing font in accordance with GOST 2.304-81.

Thematic headings are not shown on the sheets, since the name of the contents of the sheet is indicated in the main inscription. In cases where a sheet with one inscription contains several independent images (poster material), individual images or parts of text are provided with headings.

The main inscription on the first sheets of drawings and diagrams must correspond to Form 1, in text design documents - Form 2 and Form 2a on subsequent sheets. It is allowed to use Form 2a on subsequent sheets of drawings and diagrams.

The corner inscription for drawings and diagrams is located in accordance with Figure 5.1. Filled by rotating the sheet 180 o or 90 o.

Figure 5.1–Location of title block on various drawings

In the columns of the title block, Figures 5.2, 5.3, 5.4, indicate:

– in column 1 – name of the product or its component: name of the graph or diagram, as well as the name of the document, if this document is assigned a code. The name must be short and written in the nominative singular case. If it consists of several words, then a noun is placed in the first place, for example: “Threshing drum”, “Safety clutch”, etc. It is allowed to write in this column the name of the contents of the sheet in the order accepted in the technical literature, for example: “Economic indicators”, “Technological map”, etc.;

– in column 2 – designation of the document (drawing, graphics, diagram, specification, etc.);

– in column 3 – designation of the material (the column is filled in only on drawings of parts). The designation includes the name, brand and standard or specification of the material. If the brand of a material contains its abbreviated name “St”, “SCh”, then the name of this material is not indicated.

Figure 5.2 – Form No. 1

Figure 5.3 – Form No. 2

Figure 5.4 – Form No. 2a

Examples of recording material:

– SCh 25 GOST 1412-85 (gray cast iron, 250 - tensile strength in MPa);

– KCh 30-6 GOST 1215-79 (malleable cast iron, 300 - tensile strength in MPa, 6 - relative elongation in%);

– HF 60 GOST 7293-85 (high-strength cast iron, 600 - tensile strength in MPa);

– St 3 GOST 380-94 (carbon steel of ordinary quality, 3- serial number steel);

– Steel 20 GOST 1050-88 (carbon steel, high-quality structural, 20 - carbon content in hundredths of a percent);

– Steel 30 KhNZA GOST 4543-71 (alloy structural steel, 30 - carbon content in hundredths of a percent, chromium no more than 1.5%, nickel 3%, A - high quality);

– Steel U8G GOST 1425-90 (tool carbon steel, 8 - carbon content in tenths of a percent; G - increased manganese content);

– Br04Ts4S17 GOST 613-79 (deformable bronze, O-tin 4%, C-zinc 4%, C-lead 17%);

– BrA9Mts2 GOST 18175-78 (tin-free bronze , processed by pressure, A- aluminum 9%, manganese 2%);

– LTs38Mts2S2 GOST 17711-93 (cast brass, zinc 38%, manganese 2%, lead 2%);

– AL2 GOST 1583-89 (casting aluminum alloy, 2-order alloy number);

– AK4M2TS6 GOST 1583-93 (cast aluminum alloy, silicon 4%, copper 2%, zinc 6%);

– AMts GOST 4784-74 (deformable aluminum alloy, manganese 1.0...1.6%,).

When manufacturing parts from the assortment:

- Square
(from a square profile bar with a square side size of 40 mm according to GOST 2591-88, steel grade 20 according to GOST 1050-88);

– Hexagon
(made of hot-rolled steel with a hexagonal profile in accordance with GOST 2579-88 of normal rolling accuracy, with the size of an inscribed circle - turnkey size - 22 mm, steel grade 25 in accordance with GOST 1050-88);

- Circle
(hot-rolled round steel of normal rolling accuracy with a diameter of 20 mm in accordance with GOST 2590-88, steel grade St 3 in accordance with GOST 380-94, supplied in accordance with the technical requirements of GOST 535-88);

– Strip
(strip steel 10 mm thick, 70 mm wide according to GOST 103-76, steel grade St 3 according to GOST 380-94, supplied according to the technical requirements of GOST 535-88);

– Corner
(angular equal-flange steel 50x3 mm in size according to GOST 8509-86, steel grade St 3 according to GOST 380-94, standard rolling accuracy B, supplied according to the technical requirements of GOST 535-88);

– I-beam
(hot-rolled I-beam number 30 in accordance with GOST 8239-89 of increased accuracy (B), steel grade St 5 in accordance with GOST 380-94, supplied in accordance with the technical requirements of GOST 535-88);

– Pipe 20x2.8 GOST 3262-75 (ordinary non-galvanized pipe of standard manufacturing precision, of unmeasured length, with a nominal bore of 20 mm, a wall thickness of 2.8 mm, without threads and without a coupling);

– Pipe Ts-R-20x2.8 – 6000 GOST 3262-75 (zinc-coated pipe with increased manufacturing precision, measured length 6000 mm, nominal bore 20 mm, with thread);

- Pipe
(seamless steel pipe of standard manufacturing precision according to GOST 8732-78, with an outer diameter of 70 mm, a wall thickness of 3.5 mm, a length multiple of 1250 mm, steel grade 10, manufactured according to group B of GOST 8731-87);

- Pipe
(seamless steel pipe in accordance with GOST 8732-78 with an internal diameter of 70 mm, wall thickness 16 mm, unmeasured length, steel grade 20, category 1, manufactured according to group A, GOST 8731-87);

– Column 4 – letter assigned to this document according to GOST 2.103-68 depending on the nature of the work in the form of a project. The column is filled in from the left cell:

–U – educational document;

–DP – documentation of the diploma project;

–DR – documentation of the thesis;

–KP – course project documentation;

–KR – documentation of course work;

– Column 5 – product weight (in kg) according to GOST 2.110-95; on drawings of parts and assembly drawings indicate the theoretical or actual mass of the product (in kg) without indicating units of measurement.

It is allowed to indicate the mass in other units of measurement indicating them, for example, 0.25 g, 15 t.

In drawings made on several sheets, the mass is indicated only on the first.

On dimensional and installation drawings, as well as on drawings of parts of prototypes and individual production, it is allowed not to indicate the mass;

– Column 6 – scale (indicated in accordance with GOST 2.302-68).

If the assembly drawing is made on two or more sheets and the images on individual sheets are made on a scale different from that indicated in the title block of the first sheet, column 6 of the title block on these sheets is not filled out;

– Column 7 – serial number of the sheet (on documents consisting of one sheet, the column is not filled in).

Column 8 – the total number of sheets of the document (the column is filled out only on the first sheet).

Column 9 - the name or distinctive index of the enterprise issuing the document (since the department in which the diploma project is being carried out is encrypted in column 2 - designation of the document, in this column it is necessary to enter the name of the institute and the group code). For example: “PGSHA gr. To-51";

– Column 10 – the nature of the work performed by the person signing the document. In the diploma project, the column is filled in starting from the top line with the following abbreviations:

– “Developer”;

– “Consult.”;

- “Hand. etc.";

- “Head. cafe";

- “N.cont.”

– Column 11 – surname of the persons who signed the document;

– Column 12 – signatures of persons whose names are indicated in column 2. Signatures of the persons who developed this document and are responsible for standard control are mandatory;

– Box 13 – date of signing of the document;