OSG Spiral Tap HR Coating for Ni-Based Super Heat-Resistant Alloys (for Unified Screws) 1/2 Number of Threads 20 Screw Length 29mm 3901491 WHR-NI-SFT-GH5-1/2-20UNJF 1 Piece

Catalog number: WHR-NI-SFT-GH5-1/2-20UNJF Features: ● Long life and stable machining of nickel-based alloys (40-45HRC) after aging treatment. Applications: ● For blind hole machining. ● Work material: Ni-based alloy. Specifications: ● Precision: GH5 ● Nominal size: 1/2 ● Pitch (mm): 20 ● Thread length (mm): 29 ● Overall length (mm): 85 ● Shank diameter (mm): 10.5 ● Shank square section (mm): 8 ● Pilot hole diameter (mm): 11.57 ● Number of threads: 20 ● Number of engaging threads: 2.5 threads ● Machined thread: Unified thread ● Surface treatment: HR coating Material/Finish: ● Powdered high speed steel (CPM)