Indented Hi-Hex Washer Head w/Shoulder 9-15 x 2-1/2 Quad-Coated Pole Gripper Screws

From Industrial Hardware and Specialties is the Indented Hi-Hex Washer Head w/Shoulder 9-15 x 2-1/2 Quad-Coated Pole Gripper Screws. These Pole Gripper Screws are designed to attach metal to wood.This pole gripper fastener is made of a quad-coated steel. The quad-coating is a high-grade metal surface processing technology that prevents corrosion. the coating system constists of four layers: a metallic zinc layer, a hex-chromium passivation, a layer of functional nano coating used as a sealer, and a high-grade anti-corrosion chemical conversion film.Salt sprayed tested to 1000 hours, the 355-PG940 has held up to 15 cycles of Kesternich testing, and has acid rain protection. An excellent choice for outdoor and high corrosive applications. These 9-15 pole gripper screws have a hi-hex washer head w/shoulder, a Type S Point, are 2-1/2" long, and should be installed with a 1/4" indented hex drive. You can purchase these pole gripper fasteners from Industrial Hardware and Specialties in boxes of 1500 pcs ( 20 lbs.).