Bronco Tool Company
High Precision at Bargain Prices...wow!
 

Flat Washers Heavy Duty Finished

Case Hardened
MaterIal:  1010 Cold Drawn
Heat Treatment: case hardened to Rockwell N scale 60
Thickness Parallel Tolerance: +/- 0.005
Appearance: Finished and Blackened
Part # Bolt Size OD ID THICK
    D (in) E (in) F (in)
W405 1/4 5/8 9/32 3/16
W410 5/16 3/4 11/32 3/16
W415 3/8 1 13/32 3/16
W420 7/16 1 15/32 3/16
W425 1/2 1 1/8 17/32 3/16
W430 5/8 1 3/8 21/32 3/16
W435 3/4 1 5/8 25/32 1/4
W440 7/8 1 3/4 29/32 1/4
W445 1 2 1 1/32 9/32

Bronco Tool Company
1550 Opelika Road, Suite 6-114
Auburn, AL 36830
334 737 6023 • Fax: 334 737 6102

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