Accupro T2690463 Spiral Point Tap 5/16-24 3 Flutes

Product Description

The ACCUPRO T2690463 is a spiral point tap designed for cutting internal threads in through-hole applications. It features a 5/16-24 thread size, a plug chamfer for general-purpose starting, and three flutes that push chips forward ahead of the tap rather than packing them into the flute. The body is machined from vanadium high speed steel and carries a bright finish. Overall length is 2.719 inches with a thread length of 22 millimeters. This tap is suited for use in titanium and other demanding materials where a tough, wear-resistant tool steel is required.

This tap is used in machining and fabrication environments where right-hand, class 3B internal threads are required in through-hole work. The H3 thread limit provides a slightly oversized tap geometry that accommodates minor spring-back in tougher materials such as titanium. It is appropriate for both CNC and manual tapping operations and is commonly used by machinists, tool and die makers, and maintenance technicians working on precision assemblies.

Key Features

• 5/16-24 thread size with H3 thread limit for class 3B fit
• Spiral point design pushes chips forward, clearing them from the cutting zone in through-hole applications
• Vanadium high speed steel construction for increased wear resistance and toughness
• Plug chamfer allows general-purpose starting without requiring a pre-started thread
• Right-hand thread direction, bright finish, no coolant-through feature
• Rated for use in titanium and other difficult-to-machine materials

Compatibility

Designed as a standard replacement or production spiral point tap for through-hole tapping operations requiring a 5/16-24 right-hand thread with a class 3B fit and H3 thread limit.

Installation Notes

This tap should be installed in a tap holder or collet rated for the shank diameter of 8.08 millimeters and used at speeds appropriate for vanadium high speed steel in the workpiece material. Always secure the workpiece fully before tapping and use an appropriate tapping fluid for the material being threaded. Inspect the tap for chipping or wear before each use, particularly when working with titanium, and replace at first sign of edge degradation to avoid thread damage.