Yamawa Spiral Tap SP P4 1-1/4-7UNC SP-P4-1-1/4-7UNC 1 piece

Catalog number: SP-P4-1-1/4-7UNC Features: ●The groove is twisted, so small curled chips are discharged backwards and chip clogging does not occur, making it ideal for blind hole machining. ●It has a sharp cutting edge, making it ideal for threading sticky work materials and plastics. ●Tap is easy to bite into. ●Intermittent cutting of pilot holes with key grooves is also possible. ●The blade strength is inferior to HT, so the HT shape is more suitable for high hardness materials. Applications: ●For blind hole machining. ●Work material: Low carbon steel, medium carbon steel, high carbon steel. Specifications: ● Precision: P4 ● Precision notation: P grade ● Nominal dimensions: UNC1 1/4 ● Pitch (mm): 3.6286 ● Thread length (mm): 46 ● Total length (mm): 145 ● Shank diameter (mm): 24 ● Square shank section (mm): 19 ● Counterbore diameter (mm): 28.4 ● Number of threads: 7 ● Number of engaging threads: 2.5 threads ● Machined thread: Unified thread ● Surface treatment: Non-coated ● Number of grooves: 4 ● Shank length: 67 mm ● Length of square shank section: 22 mm Material/Finish: ● High-speed tool steel (HSS)