DRILLCO - 1"-11-1/2,STRAIGHT PIPE TAP - 295A164

The nominal size of a Taper Pipe Tap (NPT) is that of the pipe fitting to be tapped, not the actual size of the tap.
Geoemetry is ideal for through or blind holes
Premium grade HSS for extended life
Bright finish for added lubricity
Square shank for use with standard sized tap wrenches
Made in USA