DC SWISS Spiral Tap SA350-3 UNF(J)1/4-28 149235 1 piece

Catalog number: 149235 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 blind hole machining. ●Workpiece material: Nickel alloy. (＞850≦1600 N/m［［Ｍ２］］) ●For the aviation industry. Specifications: ●Precision: 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: 2.5 threads ●Machined thread: Unified thread ●Non-coated Material/Finish: ●Powdered high speed steel (HSS-E-PM)