DC SWISS Point Tap SA320-4 UNF(J)1/4-28 146404 1 piece

Catalog number: 146404 Features: ●This tapping tool is manufactured for nickel alloys. ●Other than the lack of roundness at the bottom of the valley, it complies with the ISO3161 standard and is ideal for the aviation industry. Applications: ●For through hole machining. ●Workpiece material: Nickel alloy. Specifications: ●Accuracy: 3B ●Nominal size: 1/4 ●Pitch (mm): 0.907 ●Thread length (mm): 15 ●Total length (mm): 80 ●Shank diameter (mm): 7 ●Shank square section (mm): 5.5 ●Pilot hole diameter (mm): 5.55 ●Number of threads: 28 ●Number of engaging threads: 4 ●Machined thread: Unified thread ●Non-coated Material/Finish: ●Powdered high speed steel (HSS-E-PM)