OSG Spiral Flute Tap: M18x2.5 Metric, D7 / 4H-6H, 4 Flute

This OSG spiral flute tap is designed for threading blind holes in ferrous and non-ferrous materials. Its 4-flute design and modified bottoming chamfer efficiently evacuate chips upward, making it ideal for automotive, aerospace, and general machining applications where thread depth and chip control are critical.

The OSG tap MPN 2993201 is a M18x2.5 metric spiral flute tap with a D7 / 4H-6H tolerance class, 4 flutes, and a modified bottoming chamfer. It is designed for general purpose threading and is suitable for blind hole applications requiring precise thread fit.

3G Electric supplies OSG taps like the M18x2.5 spiral flute tap to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this and other OSG tooling.

For blind holes, choose a spiral flute tap like this OSG M18x2.5 with a modified bottoming chamfer. The spiral design pushes chips out of the hole, preventing clogging. Ensure the tap's tolerance class (D7 / 4H-6H) matches your thread fit requirements and that the material being tapped is compatible with the tap's coating.