Taper-Lok Air-Feed Lockscrews, 5/16"-18 x 1"

Two-piece Lockscrew, specially designed for air-feed drilling. The angled locking surface mates perfectly with an air-feed collar. Use instead of a standard Lockscrew for greater strength, to eliminate worn, bent, or broken screws. Install two Air-Feed Lockscrews and a liner directly in the jig plate. Serrations at the bottom bite into the jig plate to positively prevent rotation under heavy torque loads. Alloy steel mounting screw furnished. Available for 21000 through 25000 series air-feed drills.