1/4-18 NPT HSS Taper Pipe Tap, High-Quality High-Speed Steel 6542, Used For Conventional Machine Tapping Or CNC Tapping, Can Tap Steel And Stainless Steel.

Worked perfect for what I needed it for.

While being the lowest price 1/8-27 tap on Amazon, it's also better than many of the much more expensive ones because it's made of High Speed Steel instead of "carbon steel". High speed steel has much better resistance to heat and wear as well as being much harder than carbon steel, resulting in a tap that will cut cleaner, more consistent threads, for much longer. Taps need to be incredibly hard, much more so than most tools, and HSS in my opinion is the bare minimum when it comes to materials for taps. If you have the money, cobalt (m35, m42, etc) taps are a big step up

Was able to cut 304 and 316 stainless steel.Good quality tool at a great price.

Cut clean threads that sealed on a 150 psi air compressor

I was replacing the whole part before I was told about this product! What a great tool for a power washing company and anyone really

ok

This Tap saved me from having to replace a marine generator cooling manifold which had a zinc lodged in the opening due to corrosion. I re-taped the opening (chased the threads) and am good as new. Well worth the money.

Bought for a friend

Taps worked well and remained sharp, good delivery time and price. Would recommend.