Yamawa Spiral Tap SP P1 4-40UNC SP-4-40 1 piece

Catalogue number: SP-4-40 Features: ●The twisted grooves eject small, curled, continuous chips to the rear and prevent chip clogging, making it ideal for blind hole drilling. ●Excellent cutting performance, making it ideal for threading sticky work materials and plastics. ●Tap taps bite easily. ●Also capable of intermittent cutting of pilot holes with keyways. ●Blade strength is inferior to HT, so the HT shape is more suitable for high hardness materials. Applications: ●For blind hole drilling. ●Work material: Low carbon steel, medium carbon steel, high carbon steel. Specifications: ● Precision: P1 ● Nominal size: No. 4-40UNF ● Thread length (mm): 9 ● Total length (mm): 46 ● Shank diameter (mm): 4 ● Square shank section (mm): 3.2 ● Counterbore diameter (mm): 2.33 ● Number of threads: 40 ● Number of engaging threads: 2.6 threads ● Machined thread: Unified thread ● Surface treatment: Non-coated ● Number of grooves: 2 ● Shank length (mm): 25 ● Length of square shank section (mm): 6 ● Neck length: 14 ● Tap grade: Grade P ● Machined thread: Unified thread ● Number of engaging threads: 2.5 Material/Finish: ● High-speed tool steel (HSS)