Sign up for OSG 1/4-20 STI Spiral Flute Bottoming Tap – High-Speed Steel For Screw Thread Inserts (H2, 3 Flute)
OSG 1/4-20 STI Spiral Flute Bottoming Tap – High-Speed Steel For Screw Thread Inserts (H2, 3 Flute)
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$ 7.00
Description
If you're doing precision thread work and need to install helical inserts, this OSG 1/4-20 STI spiral flute bottoming tap is exactly what you're after.
It's made from high-speed steel, so it's tough enough for industrial use and holds an edge well.
The "STI" stands for screw thread insert, meaning it's specifically designed to cut threads that accept coil inserts – perfect for repairing stripped holes or strengthening soft materials.
It's an H2 class of fit, with 3 flutes and a spiral design that helps push chips out of the hole, especially when you're bottoming out.
Made by OSG USA, a trusted name in cutting tools, this tap is widely used in manufacturing, automotive, and maintenance shops.
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