Pro-Twist slotted hex washer head with self-piercing needle point is manufactured for the ultimate performance. Self-piercing needle point for sheet metal applications twin lead thread assures fast action and reduced driving torque and strip-out. Recommended for HVAC, electrical, plumbing, framing and sheet metal.
● Ideal for metal to metal applications
● Well defined for maximum holding power and fast driving
● Meets or exceeds ASTM C-1002 and C-1513
● Zinc Plated scres conforms to ASATM F-1941 for corrosion resistance, as tested in accordance with ASTM B-117