9-15X1 1/2 Unslotted Hi-Hex Washer shoulder Pole Grip Stainless Bond Wash Ful Thread 1000hr Salt Spray (Pack Qty 2,000) BC-0924HHWSBSHC

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 and a freely spinning conically-shaped circular stainless washer bonded to a similarly shaped rubber-like piece which as a slightly smaller outside and inside diameter. The rubber side faces down, enabling the in 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) as well as leak-proof seal. It can also be used in pressure-treated lumber