JB/T 7384.1-1994 Fastener diagonal width end inspection die

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

Mechanical Industry Standard of the People's Republic of China
JB/T7384.1~7384.18-94
Special Inspection Fixtures for Fasteners
Published on 1994-07-26
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)+15bzxz.net
+(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
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