Yamawa Stainless Steel Spiral Tap SU-SP P3 7/8-14UNF SU-SP-P3-7/8-14UNF 1 piece

Catalog number: SU-SP-P3-7/8-14UNF Features: ●Ideal for blind hole machining in materials such as stainless steel, which is extremely sticky due to work hardening, as well as chromium steel and molybdenum steel. ●Optimal design of the thread reduces the machining burden on each cutting edge. ●Reduced cutting resistance extends tool life. ●Stable chip discharge provides a good finish. ●Improved strength extends tool life. ●Can be used in both synchronous and asynchronous modes. Applications: ●For blind hole machining. ●Work material: alloy steel, stainless steel. Specifications: ● Precision: P3 ● Precision notation: P grade ● Nominal dimensions: UNF7/8 ● Pitch (mm): 1.8143 ● Thread length (mm): 33 ● Total length (mm): 115 ● Shank diameter (mm): 17 ● Shank square section (mm): 13 ● Counterbore diameter (mm): 20.6 ● Number of threads: 14 ● Number of engaging threads: 2.5 threads ● Machined thread: Unified thread ● Surface treatment: Oxidation treatment ● Number of grooves: 4 Material/Finish: ● High-speed tool steel (HSS)