(1,000) 5/16" F436 Structural Flat Washer Grade 8 Thru-Hardened SAE Yellow Zinc

• Bolt Size - 5/16"
• Washer Style - SAE
• I.D. - 11/32"  / .3437"
• O.D. - 11/16" / .6875
• Nominal Thickness - .051-.080"
• Finish - Yellow Zinc Plated
• Specification - ASTM F436 Type 1
• Hardness - Thru Hardened RC 38-45
• Bolt Compatibility - A325, A490 & Grade 8
• Material - Alloy Steel
• Weight Per Piece - 0.0048 Lbs.

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