Rocky Mountain Twist 3G-OTH-192851 — Technical Specifications

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #12 is a high-speed steel threaded-shank drill bit with a 0.1890-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965 Type B specifications, with a 9/16" overall length (MPN 953HS12ST).