Serrated Hex Washer - Unslotted - 7/16" A.F.
SELF DRILLING SCREWS WITH MACHINE SCREW THREADS
Head Height: 1/4" Diam: .172
Head Height: 5/16" Diam: .208-.229
Case Hardened to Rockwell C50-56 (Core Hardness: Rockwell C32-40)
Steel Zinc Plated
Technical Specifications / 2D 
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