#4 Point - Hex Washer - Unslotted - Self Drilling Screws - Machine Threads - Zinc

Self Drilling Screws with Machine Screw Thread

Heads to ASME B18.6.3 / screws hardened to SAE J78 specifications
Case Hardened to Rockwell C50-56
(core Hardness: Rockwell C32-40)
Steel Zinc Plated