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GB/T 858-1988 English PDF (GBT858-1988)

GB/T 858-1988 English PDF (GBT858-1988)

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GB/T 858-1988: Tab washers for round nut
GB/T 858-1988
GB
National Standard
of the People’s Republic of China
Replacing GB/T 858-1976
Tab washers for round nut
APPROVED ON. JANUARY 26, 1988
IMPLEMENTED ON. JANUARY 1, 1989
Approved by. the State Mechanical Industry Committee
Table of Contents
1 Main contents ... 3
2 Quoted standards ... 3
3 Dimensions ... 3
4 Technical conditions ... 5
5 Marking ... 5
Tab washers for round nut
1 Main contents
This Standard specifies the tab washers for round nut with specifications of 10 -200 mm1).
Note. 1) This is commodity fastener variety, it shall be preferably selected.
2 Quoted standards
GB 98 Technical conditions for tab washers
GB 1237 Designation system for fasteners
3 Dimensions
Dimensions are shown in the following figure and table.
mm
Specification (large
diameter of thread)
Reference
D1 S h b a
10 10.5 25 16
3.8
12 12.5 28 19 9
14 14.5 32 20 11
16 16.5 34 22
4.8
18 18.5 35 24
20 20.5 38 27 17
22 22.5 42 30 19
Note. 1) Only for locking device of rolling bearing.
4 Technical conditions
It shall be according to GB 98.
5 Marking
5.1 Marking method shall be according to the provisions of GB 1237.
5.2 Marking example.
Marking example of tab washer for round nut with specification of 16mm, material of A3, after annealing,
and surface oxidation.
Washer GB 858 16
Additional explanation.
This Standard was proposed by the National Fastener Standardization Technical Committee.
This Standard shall be administered by Standardization Institute of State Mechanical Industry
Committee.
This Standard was drafted by Standardization Institute of State Mechanical Industry Committee.

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