Sherwood 1'X12 UNF HSSGT Straight Flute Tap Set

Sherwood: 1"X12 UNF HSSGT Straight Flute Tap Set HSS Straight Flute UNF (Unified Fine) Ground Thread Tap Set Sherwood HSS Taps are the general purpose option for thread cutting in most materials including steel, some stainless steels, cast irons and non-ferrous materials such as Aluminium, Brass and many others. Set contains 1 of each, taper, second and plug lead. Manufactured to IS0 529 Thread Forms are Class 2 medium fit tolerance Precision ground flutes Bright finish Each set of Sherwood taps contain one taper, second and plug lead tap: Sherwood HSS Taper Taps are used to start cutting the thread. They are tapered back from the end 6 to 10 threads before a fully threaded diameter is reached. This allows the tap to be positioned easily and correctly before it starts to cut the thread. The Second Tap is used after the taper tap has cut threads into the hole as far as possible. It tapers back 3 or 4 threads before full thread diameter is reached. The Plug Tap cuts threads to the