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  6. 312407KWS4 , #4 Paint Serrated Hex Washer Unslotted Self Drilling Screws

312407KWS4 , #4 Paint Serrated Hex Washer Unslotted Self Drilling Screws

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Self Drilling Screws with Self tapping screw threads
Heads to ASME B18.6.4 / Screws hardened to SAE J78 specifications
Case Hardened to Rockwell C50-56 (Core Hardness: Rockwell C32-40)
Steel Zinc Plated
Products specifications
Size 5/16-12 x 1 1/2 in
Ctn Qty 800
Weight Lbs/M 32.20
Plating Steel Zinc
Number of Points 4
Core Hardness Rockwell C32-40
Liberty Fastener Company
Liberty Fastener Company