Yamawa Spiral Tap for Aluminum (for Insert Coil Screws) AL-SP STI 1B+30 M8X1.25 AL-SP-STI-1B+30-M8X1.25 1 Piece

Catalog number: AL-SP-STI-1B+30-M8X1.25 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 machining blind holes. ● Workpiece materials: brass, brass castings, bronze, rolled aluminum, aluminum alloy castings, magnesium alloy castings, zinc alloy castings. Specifications: ● Precision: 1b+30 ● Nominal size: M8 ● Pitch (mm): 1.25 ● Thread length (mm): 23 ● Total length (mm): 75 ● Shank diameter (mm): 7 ● Square shank section (mm): 5.5 ● Counterbore diameter (mm): 8.47 ● Machined thread: Metric thread ● Number of engagement threads: 2.5 ● Surface treatment: Nitriding ● Number of grooves: 3 ● Shank length: 38 mm ● Length of square shank section: 8 mm ● Reference outer diameter: 9.624 mm Material/Finish: ● High-speed tool steel (HSS)