This kit comes with a full range of most popular metric taps and dies with both coarse and fine sizes, plus all needed wrenches, handles, and a storage case. Cut new material or chase lightly damaged threads and recover old screws, rusty nuts and bolts, and spark plugs.

1-1/2 in.-11-1/2 Carbon Steel NPT Pipe Tap Also called Pipe Taps, National Pipe Taper Taps are appropriate for threading a wide variety of materials both ferrous and non-ferrous. Carbon steel pipe taps are designed to clean and or re-thread damaged or jammes pipe threads.

NPT Pipe Thread Tap 1 Inch(1" - 11.5 NPT), Alloy Steel Internal Thread Forming Tap, Pipes Threading Flutes for Cleaning or Re-Thread Damaged or Jam Pipe Threads

National Standard Taper Pipe Threads Size NPT Chart - Includes both External and internal Pipe Thread Data. The taper rate for all NPT threads is 1⁄16 (3⁄4 inch per foot) measured by the change of diameter (of the pipe thread) over distance.

Choose from our selection of NPT taps, including general purpose taps, tap sets, and more. Same and Next Day Delivery.

The tap included in this set is a carbon steel NPT pipe tap designed for cleaning and re-threading damaged or jammed pipe threads. If you need to cut *new* threads in metal, a high-speed steel (HSS) tap is recommended.

Versatile Size Range: This NPT tap set includes 6 pipe fitting sizes - 1”, 3/4", 1/2", 3/8", 1/4", and 1/8" - providing versatility for various pipe threading needs; the nominal size of the National Pipe Taper taps corresponding to the size of the pipes fitting to be tapped

Choose from our selection of 1 NPT taps, including general purpose taps, tap sets, and more. Same and Next Day Delivery.

E-5117 1" NPT Pipe Tap Product Features. Made from carbon steel in right hand configuration only. These taps are especially suited for restricted area work. All taps have taper of 3/4" per foot. Marked with drill size for pilot hole.

When using L1 gauges to check threads, the thread is within permissible tolerance if the ring gauge face, or plug gauge notch, is +/- 1 turn from being flush with the end of the thread.