Unslotted Ind HI-Hex washer w/shoulder Pole Grip type S Full Thread 1,000hr Salt Spray

An externally threaded steel fastener with an integrally formed hex washer head screw whole head is 1020% higher than a standard hex washer head. The shank has a spaced thread pattern comparable to a Type-AB tapping screw, but with a tip that has a piercing point. Beneath the head is an unthreaded shoulder of a greater width than the minor diameter of the shank