National Pipe Thread Taps. Precision Cut Threads, Accurately Formed For Consistent, Exact Threading. Heat Treated And Tempered For File Hard Threads, And Longer, Useful Life. Designed For Hand Cutting Applications. National Pipe Thread Tap Sizes For Internal Threading On All Types Of Pipes.
Color band denotes SAE/Metric measurement for easy identification. Sockets have textured band for greater gripping power. 6-point versions offer more surface area making them less likely to slip off or round over corners, while 12-point versions provide more contact points making them easier to fit onto bolts. Chrome vanadium steel.…