TRUSCO Spiral Tap 5/16W18 TH-SP-5/16W18 1 piece

Catalog number: TH-SP-5/16W18 Features: ●Cutting chips curl up. ●Homo treatment retains cutting oil, reduces frictional heat generation, and prevents welding. Applications: ●For blind hole machining. ●Work material: carbon steel, copper alloy, aluminum alloy. Specifications: ●Accuracy: JIS Class 2 ●Nominal dimensions: W5/16 ●Thread length (mm): 22 ●Total length (mm): 70 ●Shank diameter (mm): 6.1 ●Shank square section (mm): 5.0 ●Pilot hole diameter (mm): 6.6 ●Number of threads: 18 ●Number of engaging threads: 2.5 threads ●Machining thread: Whitworth thread ●Surface treatment: Homo treatment ●Tap dimensions: 5/16 ●Accuracy JIS Class 2 Material/Finish: ●High-speed tool steel (HSS)