JB/T 8042-1999 Backing plates for screws of machine tool fixture parts and components

JB/T 8042-1999 This standard is a revision of JB/T 8042-95 "Pads for screws of 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 pads for screws with specifications of 5.5 to 19 mm. This standard was first issued in 1981 as GB 2255-80, first revised to GB/T 2255-91 on April 30, 1991, and adjusted to JB/T 8042-95 in April 1996. JB/T 8042-1999 Pads for screws of machine tool fixture parts and components JB/T8042-1999 Standard download decompression password: www.bzxz.net

ICS 25. 080. 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 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 fixturesSerew gasket
This standard specifies the shims for screws with specifications of 5.5~19mm. 2 Referenced standards
JB/T8042—1999
Replaces JB/T8042—1995
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest versions of the following standards. OB/T699—1988 Technical conditions for high-quality carbon structural steel JB/T8044—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
Technical conditions
4.1 Material: 45 steel in accordance with the provisions of GB/T699. 4.2 Heat treatment: 40~45HRC.
4.3 Other technical conditions in accordance with the provisions of JB/T8044. 5 MarkingWww.bzxZ.net
5.1 Marking example:
B=13mm, L=40mm screw pad: pad 13×40JB/T8042—1999
JB/T8042-1999
Matched screws
M24~M36
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