Rocky Mountain Twist 3G-OTH-192893 — Technical Specifications

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #28 is a high-speed steel threaded-shank drill bit with a 1/4"-28 thread size and a 0.1405-inch diameter. It features a 2-1/8" overall length, black oxide finish, and meets NAS 965 Type B specifications. This bit is designed for precision drilling applications requiring a threaded shank.