Standard: 3381A
 

Origin of the standard: Russia

 
Name: Self-locking double-shell nut

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3381A
3381A

Dimensions:

d1

2,8

3,2

H

4

5

6

7

9

11

A

18

23

25

30

35

B

7

8

10

13

16

C

12

16

18

22

26

 

There are alternatives to the standard.