DC SWISS Point Tap SA420-4 UNF(J)1/2-20 147189 1 piece

Catalog number: 147189 Features: ●Tap tool manufactured for nickel alloys. ●Complies with ISO3161 standards except for the lack of rounding at the bottom of the valley, making it ideal for the aviation industry. Applications: ●For through hole machining. ●Workpiece material: Nickel alloy. Specifications: ●Precision: 3B ●Nominal size: 1/2 ●Pitch (mm): 1.27 ●Thread length (mm): 24 ●Total length (mm): 100 ●Shank diameter (mm): 9 ●Shank square section (mm): 7 ●Pilot hole diameter (mm): 11.55 ●Number of threads: 20 ●Number of engaging threads: 4 ●Machined thread: Unified thread ●Non-coated Material/Finish: ●Powdered high speed steel (HSS-E-PM)