The Brownells Solid Carbide Drill Bit No. 31 (6-48) is a precision single-flute carbide drill designed for accurately drilling hardened steel components commonly encountered during firearm gunsmithing. Its solid carbide construction is intended for durability, and the single-flute cutting geometry helps produce clean, true holes while reducing chatter and minimizing surface work hardening during the drilling step.
Key Features
Single-flute design helps deliver clean, accurate holes in hardened steel
Solid carbide construction for long-lasting performance under demanding drilling tasks
Designed to reduce chatter and work-hardening during drilling
2-inch length for adequate quill clearance in common gunsmithing setups
Intended for drilling challenging hardened steels when standard drill bits fall short
Use this No. 31 (6-48) carbide drill bit to get reliable, precise hole placement when you need dependable results in hardened steel.
