Bronco Tool Company
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Flat Washers - Finished


Case Hardened
Material: Cold Rolled Steel 1010
Heat Treatment: case hardened to N scale 80
Appearance: Fully Finished with Black Oxide coating
Thickness Parallel Tolerance: +/- 0.005
Part # Bolt Size OD ID Thickness
    D (in.) E (in.) F (in.)
W305 #4 5/16 1/8 5/64
W310 #6 3/8 5/32 5/64
W315 #8 7/16 3/16 5/64
W320 3/16 1/2 13/64 3/32
W325 1/4 5/8 9/32 1/8
W330 5/16 3/4 11/32 1/8
W335 3/8 7/8 13/32 1/8
W340 7/16 1 15/32 1/8
W345 1/2 1 1/8 17/32 1/8
W350 5/8 13/8 21/32 1/8
W355 3/4 1 5/8 25/32 5/32
W360 7/8 1 3/4 29/32 5/32
W365 1 2 1 1/32 3/16
W370 1 1/8 2 1/4 1 5/32 7/32
W375 1 1/4 2 1/2 1 9/32 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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