Yamawa Non-ferrous Roll Tap N-RS G7 1/4-28UNF B N-RS-G7-1/4-28UNF-B 1 piece

Catalog number: N-RS-G7-1/4-28UNF-B Features: ●Roll tap suitable for thread machining of non-ferrous metals (aluminum castings, aluminum die castings, brass, etc.). Applications: ●For blind hole machining. ●Workpiece: Aluminum rolled material, aluminum alloy castings, zinc alloy castings. Specifications: ●Accuracy: G7 ●Accuracy notation: G class ●Nominal dimensions: UNF1/4 ●Thread length (mm): 15 ●Total length (mm): 62 ●Shank diameter (mm): 6 ●Shank square section (mm): 4.5 ●Pilot hole diameter (mm): 5.95 ●Number of threads: 28 ●Number of engaging threads: 2 ●Machining thread: Unified thread ●Surface treatment: Nitriding treatment ●Neck length (mm): 26 ●Shank length: 33mm ●Length of shank square section: 7mm Material/Finish: ●High-speed tool steel (HSS)