Yamawa Spiral Tap for Aluminum (for Insert Coil Screws) AL-SP STI 1B M12X1.25 AL-SP-1B-STI-M12X1.25 1 piece

Catalog number: AL-SP-1B-STI-M12X1.25 Features: ● For machining female threads to insert insert coils for the purpose of reinforcing the female thread and increasing durability in parts made of relatively soft materials such as aluminum. Applications: ● For blind hole machining. ● Workpiece materials: Brass, brass castings, bronze, rolled aluminum, aluminum alloy castings, magnesium alloy castings, zinc alloy castings. Specifications: ● Precision: 1b ● Nominal size: M12 ● Pitch (mm): 1.25 ● Thread length (mm): 26 ● Total length (mm): 88 ● Shank diameter (mm): 10.5 ● Square shank section (mm): 8 ● Counterbore diameter (mm): 12.47 ● Number of engagement threads: 2.5 threads ● Machined thread: Metric thread ● Surface treatment: Nitriding ● Number of grooves: 3 ● Number of grooves: 3 ● Shank length: 45 mm ● Length of square shank section: 11 mm ● Reference outer diameter: 13.624 mm Material/Finish: ● High-speed tool steel (HSS)