9-15X1 1/2 Unslotted Ind HI-Hex washer w/shoulder Pole Grip type S Full Thread 1,000hr Salt Spray (Pack Qty 2,000) BC-0924HHWSSHC

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 Used to install and siding. With special coating applied to the steel screw, the fastener provides both a high-level of corrosion resistance (at least 1,000 hours salt-spray rated). It can also be used in pressure-treated lumber