Serrated Hex Washer - Unslotted - Self Drilling Screws - 18-8 Stainless
Heads are 7/16" Across the Flats
Manufactured to SAE J78 specifications
Case Hardened to Rockwell C50-56
(Core Hardness: Rockwell C32-40)
18-8 Stainless Steel
Technical Specifications / 2D 
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