JB/T 8007.4-1999 JB/T 8007.4-1999 Machine tool fixture parts and components stud bolts JB/T8007.4-1999 Standard download decompression password: www.bzxz.net

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Standard of the Machinery Industry of the People's Republic of China
Parts and units of jigs and fixtures
The parts and units of jigs and fixtures1999-08-06 Issued
State Machinery Industry Bureau
Implementation on 2000-01-01
Standard of the Machinery Industry of the People's Republic of China
Parts and units of jigs and fixtures
The parts and units of jigs and fixturesDouble end stud
This standard specifies stud bolts with thread specifications of M6~M30. 2 Referenced standards
JB/T 8007.4—1999
The provisions contained in the following standards constitute the provisions of this standard through their use in this standard. When this standard was published, the versions shown were all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest version of the following standards. GB/T 6991988
JB/T8044—1999
3 Dimensions
Technical conditions for high-quality carbon structural steel
Technical requirements for machine tool fixture parts and components
The dimensions are shown in the following figure and table.
4 Technical conditions
4.1 Material: 35 steel in accordance with the provisions of GB/T699. 4.2 Heat treatment: 35~40HRC for the threaded part. 4.3 Other technical conditions in accordance with the provisions of JB/T8044. National Machinery Industry Approved on August 6, 1999 44
Implementation on January 1, 2000
5 Marking
5.1 Marking example:
d-M12, L-75mm stud bolt:
JB/T8007.4-1999
M12×75JB/T8007.41999
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