Buy stainless nuts at a bargain price. GOST on nuts with six faces

Hexagonal nut, accuracy class A, GOST 5927-70.

The nut is used in mechanical engineering and construction as connection parts.

Accuracy class: A.
Thread tolerance field: 6H.
Strength class: 4; 5; 6; eight; 10; 12.

Close analogues (ISO, DIN, EN ISO):

Standard	Name	Note
DIN 934	Hex Nut	Close parameters DIN 934 and GOST 5927-70. The height of the GOST 5927-70 nut is slightly lower than that of DIN 934.
EN ISO 4032	Hex Nut	Close parameters EN ISO 4032 and GOST 5927-70. The height of the nut GOST 5927-70 is slightly lower than that of EN ISO 4032.
EN ISO 4033	High-strength hexagon nut	EN ISO 4033 only applies to nuts with property class 12.
EN ISO 8673	Hexagon nut with fine thread pitch	EN ISO 8673 only covers fine pitch threads.

GOST5927-70:

Nut parameters

Nominal thread diameter d

Thread pitch, P

maximum

Diameter of circumscribed circle e, not less than

dw, not less than

Turnkey size, S

Theoretical weight 1000pcs. nuts, kg

All parameters in the table are in mm.

On January 1, 1991, a change was made to GOST, providing for the possibility of manufacturing sizes M10, M12, M14, M22 with the following changes in the parameters, while the rest remain unchanged:

If it is necessary to take into account these parameters when ordering products with a nominal size indicated in the table, please check these parameters with managers.

Additional information about technical specifications nuts can be obtained from company managers.

STATE STANDARD OF THE UNION OF THE SSR

HEX NUTS
ACCURACY CLASS A

Design and dimensions

Hexagon nuts , product grade A .
Construction and dimensions

GOST
5927-70

(ST SEV 3680-82)

Introduction date 01.01.72

in terms of turnkey size S = 13 mm 01.01.73

1. This standard applies to hexagon nuts of class A with a thread diameter of 1 to 48 mm. The standard fully complies with ST SEV 3680-82. (Revised edition, Rev. No. 4). 2. The design and dimensions of the nuts must correspond to those indicated in the drawing and in the table. (Changed edition, Rev. No. 3, 4, 6, 7). 3. Thread - according to GOST 24705. (Changed edition, Rev. No. 2, 4, 5). 3a. Tolerances of dimensions, deviations in the shape and location of surfaces and control methods not established by this standard are in accordance with GOST 1759.1. 3b. Permissible surface defects of nuts and control methods - according to GOST 1759.3. 3a, 3b. (Introduced additionally, Amendment No. 5). 4. It is allowed, by agreement between the manufacturer and the consumer, to manufacture nuts with a nominal thread diameter of 36 to 48 mm with a thread pitch of 2 mm. (Changed edition, Rev. No. 2, 5). 5. Technical requirements - according to GOST 1759.0. 6. (Deleted, Rev. No. 2). 7. The mass of nuts is specified in Appendix 1. 8. (Deleted, Rev. No. 4).

Nominal thread diameter d

thread pitch

Turnkey size S

Diameter of circumscribed circle e, not less than

at least

no more

d w , not less than

Height t

Notes:1. Nut sizes enclosed in brackets are not recommended.2. It is allowed to manufacture nuts with the dimensions specified in Appendix 2.3. It is allowed to manufacture nuts with a nominal height t of at least 0.8 d and maximum deviations in accordance with GOST 1759.1, subject to the requirements of GOST 1759.5.
Example symbol nuts with a thread diameter d = 12 mm, with a turnkey size S = 18 mm, with a large thread pitch with a tolerance field of 6H, strength class 5, uncoated:

Nut М12-6Н.5 (S 18) GOST 5927-70

The same, with a large thread pitch with a tolerance field of 6H, strength class 6, made of A12 steel, uncoated:

Nut М12-6Н.6.А (S 18) GOST 5927-70

The same, with a turnkey size S = 19 mm, with a fine thread pitch with a tolerance field of 6H, strength class 12, made of steel grade 40X, coated 01 with a thickness of 6 microns:

Nut M12 ´ 1.25-6N.12.40X.016 GOST 5927-70

ANNEX 1

Reference

Weight of coarse steel nuts

Nominal thread diameter d, mm	Theoretical weight 1000 pcs. nuts, kg »	Nominal thread diameter d, mm	Theoretical weight 1000 pcs. nuts, kg »

Various types of repair and construction works today they are carried out using nuts - metal fasteners, in the center of which there is a special threaded connection. Hexagonal products, which are used everywhere, are widely used.

1

The described hexagonal fasteners necessarily have a structural element that allows you to transmit torque using wrenches of various sizes. Due to this, the nut is tightened (fixed) on the rod component of the screw pair. Such a component can be a screw, a bolt, a special threaded stud.

Hexagonal products for connecting various structures and elements are most often made of ferrous metals and steel. Much less often the material for their production is plastic. To connect the nodes and mechanisms of various electrical units, nuts made of non-ferrous metals are also used.

Photo of hex nuts for connecting various designs

Ordinary metal hexagonal products are often subjected to additional processing in order to improve their performance. Nut plating technology is often used - applying a small layer of metal with special properties to their surface. This operation guarantees an increase in hardness, rust resistance and wear resistance of the nut. The most common types of metallization are the following processing procedures for products:

galvanizing;
nickel plating;
chrome plating;
bluing.

2

Nuts with six faces in Russia and many CIS countries of all popular sizes (M6, M8) are manufactured according to State Standards 5915 and 5927, adopted in 1970. GOST 5927–70 applies to hexagonal products with a thread section from 1 to 48 millimeters, which have an accuracy class of A. The thread pitch of such nuts according to standard 5927 varies from 0.25 to 5 mm. The thread itself is applied in accordance with GOST 24705.

In the photo - nuts with six faces

The mass of 1000 pieces of class A products without coating (Gosstandart 5927) varies from 0.062 (nuts with a thread section of 1 mm) to 956.2 (section - 48 mm) kilograms. Finished products are checked for quality in accordance with GOST 1759.3. The same standard describes possible surface defects of nuts. Tolerances for the location of surfaces, deviations in geometric shape and dimensions are specified in GOST 1759.1.

Photo of class A hex nut

The state standard 5915–70 applies to nuts of accuracy class B, which can have a cross section from 1.6 to 48 mm, a mass of 1000 pieces from 0.046 to 956.2 kilograms. The thread pitch of products according to GOST 5915–70 is from 0.35 to 5 mm. Nut tests according to the 5915 standard are carried out according to requirements similar to those for products manufactured according to the State Standard 5927-70.

3

It is not at all difficult to understand what diameter this or that nut has. If on fastener marked "M8", this means that we have a nut with a thread section of 8 mm, if "M6" - a section of 6 mm. The diameter value has a direct relationship with all other parameters of fasteners. They are not indicated on the nut, but it is quite simple to determine them using special tables. You can use tabular data from the already mentioned GOST 5927 and 5915.

In the photo - hex nuts with markings

Any nuts with six faces are also marked with their strength class. Maximum strength indicated by a dot printed on the product. Other classes are marked with one or two dashes (they are called risks). On nuts with a thread section of less than 5 mm, a dot or risks are applied to the chamfer and described by a convex shape. But on products with a cross section of more than 5 mm (M8, M6, and so on), these signs are applied to the side part or to the supporting surface.

Photo of strength classes of hex nuts

nuts different diameters are used in almost all industrial areas, in the construction industry, in everyday life. Any cyclist and motorist uses M8 and M6 hexagonal products. With their help, many parts and structural elements of industrial machines and units are attached. Nuts M6 and M8 (as, indeed, products of larger diameter) are indispensable in the construction of houses and buildings, the arrangement of engineering communications. In the manufacture of furniture, hexagonal fasteners marked "M6" and below are also actively used.

Pictured are stainless steel hex nuts

DIN 934 allows the manufacture of hexagonal fasteners with an additional coating of its surface, produced using the technologies of gas-thermal, hot and, chromium plating and nickel plating (galvanic), burnishing.

Nuts with six faces and large threads are marked according to DIN 934 according to the thread section - from M1 to M110. Such products have a height of 0.8 to 88 mm, their geometric dimensions are designed for keys from 2.5 to 155 mm.

Photo of hex nut DIN 934

Note that DIN 934 divides fasteners with coarse threads into two accuracy groups - A and B. Nuts with fine threads according to the German standard are marked from "M8x1" to "M64x4". They have a length of 6.5 to 51 mm. They work with keys from 13 to 95 mm. Products with fine threads according to DIN 934 contain the letters "LH" in the designation. The marking looks like this - M5 LH - M30 LH.

5

Nuts with a flange can have a thread section in the range of 5–20 mm in accordance with GOST 50592, which is adopted in Russian Federation. Analogues of this Gosstandart are ISO 4161 and DIN 6923 standards. Hexagonal products with a flange are considered easier and more reliable to use. They guarantee maximum connection reliability and high strength due to the fact that the flange eliminates the possibility of spontaneous unscrewing of the nut.

In the photo - hex nuts with a flange

The main parameters of fasteners with a flange (in millimeters):

thread pitch - from 0.8 (M5) to 2.5 (M20);
turnkey height (smallest) - from 1 to 3;
the radius of conjugation of faces and corners of a hexagonal product - up to 0.3–1.2;
the theoretical weight of 1000 fasteners is from 1.39 to 83.47 kg.

The geometric dimensions of finished products with a flange are checked using ring flat gauges. This verification technique makes it possible to establish the compliance of all product parameters with the requirements of the State Standard. Flange nuts must be checked for flange thickness. The purpose of this analysis is to confirm that the thickness of the finished product is greater than or equal to the standard values at the transition point of the flange to the hexagon.

STATE STANDARD OF THE UNION OF THE SSR

HEX NUTS
ACCURACY CLASS A
Design and dimensions
Hexagon nuts, product grade A.
Construction and dimensions

GOST
5927-70

(ST SEV 3680-82)

Introduction date 01.01.72

in turnkey size S = 13 mm 01.01.73

1. This standard applies to hexagon nuts of class A with a thread diameter of 1 to 48 mm.
The standard fully complies with ST SEV 3680-82.
(Revised edition, Rev. No. 4).
2. The design and dimensions of the nuts must correspond to those indicated in the drawing and in the table.
(Changed edition, Rev. No. 3, 4, 6, 7).
3. Thread - according to GOST 24705.
(Changed edition, Rev. No. 2, 4, 5).
3a. Tolerances of dimensions, deviations of the shape and location of surfaces and control methods not established by this standard are in accordance with GOST 1759.1.
3b. Permissible surface defects of nuts and control methods - according to GOST 1759.3.
3a, 3b. (Introduced additionally, Amendment No. 5).
4. It is allowed, by agreement between the manufacturer and the consumer, to manufacture nuts with a nominal thread diameter of 36 to 48 mm with a thread pitch of 2 mm. (Changed edition, Rev. No. 2, 5).
5. Technical requirements - according to GOST 1759.0.
6. (Deleted, Rev. No. 2).
7. The mass of nuts is indicated in Appendix 1.
8. (Deleted, Rev. No. 4).

Nominal thread diameter d	(1)	(1,4)	1,6	2	2,5	3	(3,5)	4	5	6	8	10	12	(14)	16	(18)	20	(22)	24	(27)	30		36	42	48
thread pitch	large	0,25	0,30	0,35	0,40	0,45	0,5	0,6	0,7	0,8	1	1,25	1,5	1,75	2		2,5			3		3,5		4	4,5	5
thread pitch	small	-										1	1,25		1,5					2			3
Turnkey size S		3,2			4	5	5,5	6	7	8	10	13	16	18	21	24	27	30	34	36	41	46		55	65	75
Diameter of the circumscribed circle e, not less		3,4			4,3	5,5	6	6,6	7,7	8,8	11,1	14,4	17,8	20,0	23,4	26,8	30,1	33,5	37,7	40,0	45,6	51,3		61,3	72,6	83,9
d a	at least	1,0	1,4	1,6	2,0	2,5	3	3,5	4,0	5,0	6,0	8,0	10	12	14	16	18	20	22	24	27	30		36	42	48
d a	no more	1,15	1,61	1,84	2,30	2,9	3,45	4,00	4,60	5,75	6,75	8,75	10,8	13,0	15,1	17,3	19,4	21,6	23,8	25,9	29,2	32,4		38,9	45,40	51,80
d w, not less		2,90			3,60	4,50	5,00	5,40	6,30	7,20	9,00	11,7	14,6	16,6	19,6	22,5	25,3	28,2	31,7	33,6	38,4	43,1		51,5	61,0	70,5
Height T		1,0		1,3	1,6	2,0	2,4	2,8	3,2	4,7	5,2	6,8	8,4	10,8	12,8	14,8	16,4	18,0	19,8	21,5	23,6	25,6		31,0	34,0	38,0

Symbol example nuts with thread diameter d= 12 mm, with turnkey size S= 18 mm, with a large thread pitch with a tolerance field of 6H, strength class 5, uncoated:
Nut М12-6Н.5 (S18) GOST 5927-70
The same, with a large thread pitch with a tolerance field of 6H, strength class 6, made of A12 steel, uncoated:
Nut М12-6Н.6.А (S18) GOST 5927-70
The same, with a turnkey size S= 19 mm, with a fine thread pitch with a tolerance field of 6H, strength class 12, made of steel grade 40X, coated 01 6 µm thick:
Nut М12×1,25-6Н.12.40Х.016 GOST 5927-70

ANNEX 1
Reference

Weight of coarse steel nuts

d, mm		Nominal thread diameter d, mm	Theoretical weight 1000 pcs. nuts, kg ≈	Nominal thread diameter d, mm	Theoretical weight 1000 pcs. nuts, kg ≈
1	0,062	5	1,440	20	71,44
1,4	0,057	6	2,573	22	103,15
1,6	0,074	8	5,548	24	122,87
2	0,141	10	10,220	27	175,28
2,5	0,272	12	15,670	30	242,54
3	0,377	14	25,33	36	416,78
3,6	0,497	16	37,61	42	623,88
4	0,800	18	53,27	48	956,20

To determine the mass of nuts from other materials, the mass values indicated in the table should be multiplied by the coefficients: 0.356 - for an aluminum alloy; 1.080 - for brass. ANNEX 1. (Changed edition, Rev. No. 3, 6).

APPENDIX 2
Reference

Dimensions in mm

Nominal thread diameter d	10	12	14	22
Turnkey size S	17	19	22	32
Diameter of the circumscribed circle e, not less	18,9	21,1	24,5	35,7
d w, not less	15,6	17,4	20,6	30,0
Theoretical weight 1000 pcs. nuts with large thread pitch, kg ≈	12,06	18,40	28,91	85,67

APPENDIX 2 (Introduced additionally, Rev. No. 6; revised edition, Rev. No. 7).

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of Ferrous Metallurgy of the USSR
DEVELOPERS
I.N. Nedovisiy, cand. tech. sciences; B.M. Rigmant; IN AND. Mokrinsky, cand. tech. Sciences
2. APPROVED AND PUT INTO EFFECT by the Decree of the Committee of Standards, Measures and Measuring Instruments under the Council of Ministers of the USSR dated 12.08.70 No. 178
3. The standard fully complies with ST SEV 3680-82
4. REPLACE GOST 5927-62
5. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS

	Item number	The designation of the NTD to which the link is given	Item number
GOST 1759.0-87	5	GOST 1759.5-87	2
GOST 1759.1-82	2.3a	GOST 24705-81	3
GOST 1759.3-83	3b

6. The limitation of the validity period was removed according to protocol No. 5-94 of the Interstate Council for Standardization, Metrology and Certification (IUS 11-12-94)
7. RE-ISSUED (September 1998) with Amendments No. 2, 3, 4, 5, 6, 7, approved February 1974, March 1981, June 1983, May 1985, March 1989 , July 1995 (IUS 3-74, 6-81, 11-83, 8-85, 6-89, 9-95)