This standard specifies the type and size of the die for testing hexagonal head screws and hexagonal nut diagonal width. This standard applies to item 4 of table 2 of ZB J13 002.1. JB/T 7384.1-1994 Diagonal width of fasteners Diagonal width of fasteners JB/T7384.1-1994 Standard download decompression password: www.bzxz.net
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Mechanical Industry Standard of the People's Republic of China JB/T7384.1~7384.18-94 Special Inspection Fixtures for Fasteners Published on 1994-07-26wwW.bzxz.Net Ministry of Machinery Industry of the People's Republic of China Implemented on 1995-07-01 Mechanical Industry Standard of the People's Republic of China Fasteners Diagonal Width Stop End Inspection Die Subject Content and Scope of Application JB/T 7384.1-~94 This standard specifies the type and size of the diagonal width stop end inspection die for testing hexagonal head screws and hexagonal nuts. This standard applies to item 4 of Table 2 of ZBJ13002.1. 2 Reference standards GB1957 Light clear limit gauge Tolerances of fasteners Screw inspection, screws and nuts ZBJ13002.1 Test methods for fasteners Dimensions and geometrical accuracy of screw inspection, screws, studs and nuts 3 Types and dimensions The type and dimensions of the bolt diagonal width stop end inspection die shall be as specified in Figure 1 and Table 1; the type and dimensions of the nut diagonal width stop end inspection die shall be as specified in Figure 2 and Table 2. Approved by the Ministry of Machinery Industry on July 26, 1994 Implemented on July 1, 1995 Thread effect specifications Limit deviation Limit deviation (rounding)+6 JB/T 7384.1~94 0. 5 ×45 2(rounding)+8 (rounding)+10 Thread specifications Grade B, C Limit deviation Limit deviation Thread ratio specifications Limit deviation Limit deviation JB/T 7384.194 Continued Table 1 r(rounded)+10 (rounded) (rounded)+15 +(rounded)+12 +(rounded)+14 ((rounded)+18 Thread specification Limit deviation Limit deviation Limit deviation Limit deviation Thread specification Limit difference Limit deviation Limit deviation 2(rounded)+5 JB/T 7384.194 (rounding)+6 +(rounding)+10 (rounding)+8 (rounding)+12 (rounding) Thread specification Limit deviation Limit roll Limit deviation Limit deviation JB/T 7384.194 Continued Table 2 (rounding)+14 (rounding)+15 (rounding)+18 Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.