Flat - Phillips - Undercut - Self Drilling Screws with Machine Screw Threads- Zinc
Manufactured to ASME B18.6.3 & SAE J78 specifications
Case hardened to Rockwell C50-56
(Core Hardness: Rockwell C32-40)
Steel Zinc Plated
Manufactured to ASME B18.6.3 & SAE J78 specifications
Case hardened to Rockwell C50-56
(Core Hardness: Rockwell C32-40)
Steel Zinc Plated