GOST-5927-1970-ENG.pdf
5927-70 1 Group 33 USSR STATE STANDARD HEXAGON NUTS OF ACCURACY CLASS A Design and Dimensions OKP (All-Union Product Classification Code) 12 8300 GOST 5927-70 (CMEA Standard 3680-82) Date of Introduction 01.01.72 regarding across flats width S = 13 mm 01.01.73 1. This Standard Applies to hexagon nuts of accuracy class A with thread diameter of 1 to 48 mm. This Standard fully complies with CMEA Standard 3680-82. (Amended Wording, Amendment No. 4). 2. The design and dimensions of nuts shall correspond to those specified in the drawing and in the table. (Amended Wording, Amendment Nos. 3, 4, 6 and 7). 3. A thread shall be in accordance with GOST 24705. (Amended Wording, Amendment Nos. 2, 4 and 5). 3a. Tolerances of dimensions, deviations of shape and arrangement of surfaces and the test methods, not established by this Standard, shall be in accordance with GOST 1759.1. 3b. Allowable surface defects of nuts and the test methods shall be in accordance with GOST 1759.3. 3a and 3b. (Subsequently Inserted, Amendment No. 5). 4. By agreement between the manufacturer and the customer it is allowed to produce nuts in nominal thread diameter of 36 to 48 mm with a thread pitch of 2 mm. (Amended wording, Amendment Nos. 2 and 5). 5. Technical requirements shall be in accordance with GOST 1759.0. 6. (Removed, Amendment No. 2). 7. The mass of nuts is specified in Appendix 1. 8. (Removed, Amendment No. 4). Official Edition Reprinting is prohibited 5927-70 2 mm Nominal thread diameter d (1) (1.4) 1.62 2.5 3 (3.5)4 5 6 8 10 12 (14)16 (18)20 (22)24 (27) 303642 48 coarse 0.25 0.30 0.35 0.40 0.450.50.6 0.70.81 1.25 1.5 1.752 2.5 3 3.54 4.5 5 Thread pitch fine 1 1.25 1.5 2 3 Across flats width S 3.2 4 5 5.56 7 8 10 13 16 18 21 24 27 30 34 36 41465565 75 Circumscribed circle diameter , no less than 3.4 4.35.5 6 6.6 7.78.811.1 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 no less than 1.0 1.4 1.62.02.5 3 3.5 4.05.06.0 8.010 12 14 16 18 20 22 24 27 30 36 42 48 da no more than 1.15 1.61 1.84 2.302.9 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 dw, no less than 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 1.0 1.31.62.0 2.42.8 3.24.75.2 6.88.4 10.8 12.8 14.8 16.4 18.0 19.8 21.5 23.6 25.6 31.0 34.0 38.0 N o t e s : 1. It is not recommended to apply the bracketed dimensions of nuts. 2. It is allowed to produce nuts with dimensions specified in Appendix 2. 3. It is allowed to produce nuts with nominal height of no less than 0.8d and maximum deviations in accordance with GOST 1759.1 provided, that the requirements of GOST 1759.5 are observed. An example of conventional designation of a nut with thread diameter d = 12 mm, with across flats width S = 18 mm, with coarse pitch of tolerance range 6, of strength class 5, without a coating: 12-6.5 (S18) 5927-70 The same, but with coarse pitch of tolerance range 6, of strength class 6, made from steel of grade 12, without a coating: 12-6.6.A (S18) 5927-70 The same, but with across flats width S = 19 mm, with fine pitch of tolerance range 6, of strength class 12, made from steel of grade 40, with a coating 01 of 6 microns thick: 12 1,25-6.12.40.016 5927-70 5927-70 3 APPENDIX 1 Reference Mass of steel nuts with coarse pitch Nominal thread diameter d, mm Theoretical mass of 1000 nuts, kg Nominal thread diameter d, mm Theoretical mass of 1000 nuts, kg Nominal thread diameter d, mm Theoretical mass of 1000 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 For determination of mass of nuts made from other materials the mass values, specified in the table, shall be multiplied by the following factors: 0.356 for aluminum alloy; 1.080 for brass. APPENDIX 1. (Amended Wording, Amendment Nos. 3 and 6). APPENDIX 2 Reference Dimensions in mm Nominal thread diameter d 10 12 14 22 Across flats width S 17 19 22 32 Circumscribed circle diameter , no less than 18.9 21.1 24.5 35.7 dw, no less than 15.6 17.4 20.6 30.0 Theoretical mass of 1000 nuts with coarse pitch, kg 12.06 18.40 28.91 85.67 APPENDIX 2. (Subsequently Inserted, Amendment No. 6; Amended Wording, Amendment No. 7). 5927-70 4 DETAILS 1. DEVELOPED AND SUBMITTED by the USSR Ministry for Ferrous Metallurgy DEVELOPERS I.N. Nedoviziy, Cand. Sci. (Tech.); B.M. Rigmant; V.I. Mokrinskiy, Cand. Sci. (Tech.). 2. APPROVED AND INTRODUCED by Decree No. 178, dated 18.02.70, of Committee for Standards, Measures and Measuring Devices under the USSR Council of Ministers 3. This Standard fully complies with CMEA Standard 3680-82 4. IN PLACE OF GOST 5927-62 5. REFERENCE DOCUMENTATION Number of reference document referred to Number of clause Number of reference document referred to Number of clause GOST 1759.0-87 5GOST 1759.5-872 GOST 1759.1-82 2, 3 GOST 24705-81 3 GOST 1759.3-83 3b 6. Restriction of validity period is removed under Report No. 5-94 of Interstate Council on Standardization, Metrology and Certification (IUS Standards Information Catalog 11-12-94) 7. REVISED EDITION (April, 1998) with Amendments Nos. 2, 3, 4, 5, 6 and 7, approved in February 1974, March 1981, June 1983, May 1985, March 1989 and July 1995 (IUS 3-74, 6-81, 11-83, 8-85, 6-89 and 9-95)
