OSG Screw Thread Insert STI Tap: Spiral Fute, M20x2.5 Metric, D5 / 4H-6H, 4 Flute
The OSG Screw Thread Insert STI Tap is a spiral-flute tap designed for threading holes that will receive screw thread inserts. This M20x2.5 Metric tap features a D5 / 4H-6H tolerance, 4 flutes, and is made from…
SKU 3G-OTH-273364
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Product Description
The OSG Screw Thread Insert STI Tap is a spiral-flute tap designed for threading holes that will receive screw thread inserts. This M20x2.5 Metric tap features a D5 / 4H-6H tolerance, 4 flutes, and is made from high-speed steel (MPN 10901300).
Frequently Asked Questions
What is an OSG Screw Thread Insert STI Tap used for?
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 automotive, aerospace, and general manufacturing to repair or reinforce threads in softer materials like aluminum or cast iron.
What are the specifications of the OSG STI Tap M20x2.5?
This OSG STI Tap has a metric M20x2.5 thread size, a D5 / 4H-6H tolerance class, 4 spiral flutes, and is made from high-speed steel. The manufacturer part number is 10901300. It is designed for cutting threads that accept screw thread inserts of the same nominal size.
Where to buy OSG STI Taps worldwide?
You can source OSG STI Taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the M20x2.5 spiral-flute tap (MPN 10901300).
How to select the correct OSG STI Tap for an M20x2.5 insert?
To select the correct OSG STI Tap, match the tap thread size (M20x2.5) to the insert's nominal thread. Ensure the tap tolerance class (D5 / 4H-6H) aligns with the required thread fit. Use a spiral-flute design for through-hole applications to evacuate chips. Always verify the material compatibility with high-speed steel.
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Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















