Yamawa Spiral Tap SP P2 1/4-28UNF SP-UNF-1/4 1 piece

Catalog number: SP-UNF-1/4 Features: ● Unified thread taps are used in a wide range of applications. Applications: ● For blind hole machining. ● Workpiece materials: carbon steel, tool steel, cast steel, cast iron, brass, aluminum alloy castings, zinc die castings. Specifications: ● Precision: P2 ● Precision notation: P class ● Nominal dimensions: UNF1/4 ● Thread length (mm): 15 ● Overall length (mm): 62 ● Shank diameter (mm): 6 ● Shank square section (mm): 4.5 ● Pilot hole diameter (mm): 5.53 ● Number of threads: 28 ● Number of engaging threads: 2.5 threads ● Machined threads: Unified threads ● Surface treatment: Non-coated ● Tap grade: P class Material/Finish: ● High-speed tool steel (HSS)