ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #19, 1-1/4" Overall Lg

This cobalt drill bit is designed for drilling precision holes in hard metals and aerospace alloys. Its threaded shank (1/4"-28) allows secure mounting in tool holders for high-torque applications. It meets NAS 965 Type D specifications, making it suitable for aircraft maintenance and industrial machining where exact hole diameters (0.1660 inch) are critical.

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #19 (MPN 953CO19SS) has a 0.1660-inch diameter, 1/4"-28 thread size, and 1-1/4 inch overall length. It features a black oxide cobalt finish and meets NAS 965 Type D standards. This combination provides wear resistance and dimensional accuracy for demanding drilling tasks.

3G Electric supplies ROCKY MOUNTAIN TWIST threaded shank drill bits worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on the #19 cobalt drill bit (MPN 953CO19SS) or other sizes in the series.

Select based on thread size (1/4"-28 for this #19 bit), diameter (0.1660 inch), and material compatibility. Cobalt bits suit hard metals; black oxide reduces friction. Ensure the shank matches your tool holder's thread. For NAS 965 applications, verify Type D compliance. 3G Electric can help match your requirements to the correct ROCKY MOUNTAIN TWIST part number.