Unslotted - Hex Washer - Self Drilling Screws - Black Zinc - 1,000 Hour Salt Spray Rated

Manufactured to ASME B18.6.3 & IFI-113 specifications
Screw is Case Hardened to Rockwell C50-56
(Core Hardness: Rockwell C32-40)
Steel Black Zinc Finish / 1,000 Hour Salt Spray Rated
High Corrosion Resistance
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