JB/T 8004.7-1999 Hexagon nuts for machine tool fixture parts and components

JB/T 8004.7-1999 This standard is a revision of JB/T 8004.7-95 "Hexagon socket nuts for machine tool fixture parts and components". During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. This standard specifies hexagon socket nuts with ordinary thread specifications of M4 to M24. This standard was first issued in 1981 as GB 2154-80, first revised to GB/T 2154-91 on April 30, 1991, and adjusted to JB/T 8004.7-95 in April 1996. JB/T 8004.7-1999 Hexagon socket nuts for machine tool fixture parts and components JB/T8004.7-1999 Standard download decompression password: www.bzxz.net

ICS 25. 080. 01
Machinery Industry Standard of the People's Republic of China
The parts and units of jigs and fixtures
The parts and units of jigs and fixtures1999-08-06PromulgatedbZxz.net
State Bureau of Machinery Industry
Implementation on 2000-01-01
1Scope
Machinery Industry Standard of the People's Republic of China
The parts and units of jigs and fixturesInner hexagon nut
This standard specifies the hexagon nuts with thread specifications of M6 to M24. 2 Reference standards
JB/T 8004.71999
Replaces JB/T8004.7—1995
The clauses contained in the following standards constitute the clauses of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. Technical conditions for high-quality carbon structural steel
GB/T699—19881
JB/T 8044~1999
3 Dimensions
Technical requirements for machine tool fixture parts and components
The dimensions are shown in the following figure and table.
Approved by the State Machinery Industry Bureau on August 6, 1999 and implemented on January 1, 2000
4 Technical conditions
4.1 Material: 45 steel in accordance with the provisions of GB/T699. 4.2 Heat treatment: 3540HRC.
JB/T8004.7-1999
Basic dimensions
4.3 Other technical conditions shall comply with the provisions of JB/T8044. 5 Marking
5.1 Marking example:
d-M12 hexagon socket nut:
Nut M12JB/T8004.7-—1999
Limit deviation
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