Yamawa Spiral Tap for Aluminum (for Insert Coil Screws) AL-SP STI 1B+30 M4X0.7 AL-SP-STI-1B+30-M4X0.7 1 Piece

Catalog number: AL-SP-STI-1B+30-M4X0.7 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: M4 ● Pitch (mm): 0.7 ● Thread length (mm): 13 ● Total length (mm): 60 ● Shank diameter (mm): 5.5 ● Square shank section (mm): 4.5 ● Counterbore diameter (mm): 4.27 ● Machined thread: Metric thread ● Number of engagement threads: 2.5 ● Surface treatment: Nitriding ● Number of grooves: 3 ● Shank length: 33mm ● Length of square shank section: 7mm ● Reference outer diameter: 4.909mm ● Neck length: 22mm Material/Finish: ● High-speed tool steel (HSS)