Williams Gunsight Co. High Speed Tap & Drill Set 8-40 with #28 Drill

The Williams Gunsight Co. High Speed Tap & Drill Set 8-40 is a compact, precision gunsmithing tool designed to cut clean 8-40 threads and pilot-drill the proper clearance hole for them. The matched set pairs an 8-40 high speed tap with a #28 high speed drill, the correct drill size to pre-drill material before tapping an 8-40 hole.

This pairing is purpose-built for mounting scope bases and sight hardware that use 8-40 screws, including the Williams Firesight line and many other traditional rifle, shotgun, and handgun sight-mounting applications. It is a staple on the bench of any shooter or gunsmith who installs, replaces, or upgrades iron sights and scope bases, and the small footprint keeps it easy to store in a drawer or toss in a range bag.

Constructed from high speed steel in a black and silver finish, the set measures just 0.30" x 2.75" x 4.25" overall, making it a lightweight, no-nonsense addition to any gunsmithing or sight-installation kit.