#6 (#5 Head) x 1/2 High Low Style Self Tapping Screws / Unslotted / Hex Washer Head / Steel / Zinc (Quantity: 10 000 pcs)

Hex Washer Unslotted High Low Self Tapping Screws - A Hi-Lo is a dual lead thread formong screw for use in plastic nylon wood or other low density materials. The thread design reduces driving torque improves drive to strip out torque and lessons the risk of cracking the application. Head dimensions often differ from standard tapping screws Case Hardened to Rockwell C45-50 (Core Hardness: Rockwell C28-36) Fully Threaded