Pipe Taps

About Pipe Taps

Pipe taps cut tapered National Pipe Taper (NPT) threads into metal fittings, pipe ends, and manifold ports. Unlike standard machine taps, a pipe tap follows a taper angle that creates a self-sealing interference fit once a fitting is tightened, making these tools essential for gas, hydraulic, and water line work. Plumbers, pipefitters, HVAC technicians, and serious DIYers reach for them whenever they need to add a branch connection, repair a stripped port, or fabricate a custom fitting from scratch. The products on this page span $6.89 for the Drill POU1/8NPTW/DRILL, a 2-piece combo that pairs a tap with its matching drill bit, up to $43.95 for the Drill DWTPT1/8-1SET, a 6-piece set packaged in a 6 x 6 x 4 inch case. Brands include Drill, IRWIN, and Century. Most carry 4.6 or 4.7-star ratings backed by hundreds to thousands of verified reviews, and the two top individual taps move 400 to 500 units per month, confirming steady demand from working tradespeople. Narrowing your choice comes down to three questions: which thread size you need (options here include 1/4-18 NPT, 3/8-18 NPT, and 3/4 NPT among others), whether a single tap or a multi-size set fits your workload, and whether a pilot drill bit should be included. Occasional users who cut one port size should look at the Drill DWTPT3/4 at $12.85 or the Drill POU1/8NPTW/DRILL at $6.89. Shops and contractors threading multiple sizes regularly are better served by the 5-piece or 6-piece sets.