Drill America - DWT54506 5/16-18 UNC High Speed Steel Bottoming Tap, (Pack of 1)

made excellent threads

it literally broke on the first bolt hole I tied to clean the existing threads on.... I never have broke a tap in my life and did not put hardly any pressure on it, I do believe it was defective... I lost my money this time

I used this to clean up the threads on a Model A Ford Zenith carburetor jets.

Tapped hole in 12L14 steel in one pass, no need to backout to clear chips! Very nice quality.

Cut threads very well into extruded aluminum

worked for me

Benchcrafted sends machine-threaded screws to attach the Retro Crisscross and Glide hardware for their renowned leg vise, rather than wood lag bolts/screws. Surprisingly for me, they actually worked quite well. This Bottom Tap has thread cutters almost to the end of the tool, allowing you to drill a hole slightly longer than the effective depth of the screw, unlike the taps available at big-box home improvement stores which have a longer distance between the full-sized cutting thread and the end of the tap. Since Im using it on Southern Yellow Pine, theres no appreciable wear on the tap while using it, and it was the right tool for this job.

This 6-40 tap cleans the Ruger front sight hole on the Mark III & IV 22/45 Lite.

The tap was as described and worked great. Shipping was 7 days.

Worked like charm saved my but on valve cover head did what supposed to do. Stripped and crossed threaded bolts suck glad u guys had right size great quality held up still looks good glad to add to my tap set will get more taps from u guys in future