OSG Screw Thread Insert STI Tap: Straight Fute, M4x0.7 Metric, D3 / 4H-6H, 3 Flute

An OSG Screw Thread Insert STI Tap is used to cut internal threads in a pre-drilled hole before installing a helical wire thread insert. It is commonly applied in aerospace, automotive, and general manufacturing to repair or strengthen threads in softer materials like aluminum or cast iron.

This OSG STI Tap has a metric M4x0.7 thread size, a D3 / 4H-6H tolerance class, 3 flutes, and is made from high-speed steel. The manufacturer part number is 12800400. It is designed for general-purpose thread insert tapping in a wide range of industrial applications.

3G Electric supplies and delivers the OSG STI Tap M4x0.7 (MPN 12800400) to customers worldwide. We handle full logistics, customs clearance, and delivery coordination, ensuring you receive the correct industrial tooling for your thread insert applications, regardless of your location.

To select the correct STI tap, match the tap's thread size and pitch to the thread insert's internal thread specification. For example, an M4x0.7 STI tap is used for inserts requiring a 4 mm diameter with 0.7 mm pitch. Always verify the insert manufacturer's recommended tap drill size and tolerance class, such as D3 / 4H-6H.