IS Spiral Tap Whitworth Thread 1/2W12 SPT-1/2W12 1 piece

Catalog number: SPT-1/2W12 Features: ● Good cutting performance, cutting chips curl upwards. ● Homo treatment retains cutting oil, reduces frictional heat generation, and prevents welding. Applications: ● For blind hole processing. ● Work material: General steel, low-medium carbon steel, alloy steel. ● Machined thread: Whitworth thread ● For blind holes. Specifications: ● Precision: H2 ● Nominal size: W1/2 ● Thread length (mm): 30 ● Total length (mm): 85 ● Shank diameter (mm): 9 ● Shank square section (mm): 7 ● Pilot hole diameter (mm): 10.7 ● Number of threads: 12 ● Number of engaging threads: 2.5 threads ● Machined thread: Whitworth thread ● Surface treatment: Homo treatment ● Tap grade: H grade Material/Finish: ● High speed steel (HSS-E)