This 398 spiral flute tap is made of high speed steel and has a 0.194 inch diameter, 2 11/16 inch long shank. It is designed for use with stainless steel/steel, and meets the standards for ANSI. This 398 series spiral flute tap has an oxide finish, and has pipe measurements. It is non-coolant through, has right hand direction with a four-inch length. Plus it has three flutes.
Technical Specs
ItemSpiral Flute Tap
Thread StandardUNC
Overall Length4 in
75% Thread Drill Size#25
Thread DirectionRight Hand
55% Thread Drill Size#21
Coolant FedNon-Coolant Through
Material Grade - Machining398
Primary Material ApplicationStainless Steel, Steel