Value Collection MSC-04609731 Spiral Flute Tap 8-32 Unc

Product Description

The VALUE COLLECTION MSC-04609731 is a spiral flute tap designed for cutting internal 8-32 UNC threads in through-holes and blind holes where chip evacuation is critical. Built from high-speed steel with a bright, uncoated finish, this tap features a 45-degree helix angle and fast flute style that pull chips up and out of the hole during the tapping operation. The modified bottoming chamfer allows threading closer to the bottom of a blind hole than a plug tap while still providing a short lead-in. Three right-hand flutes and a 2B class of fit make it suitable for standard commercial and industrial threaded fastener applications.

This tap is intended for use in machine shop, maintenance, and production environments where 8-32 UNC internal threads are required. The H3 thread limit and 2B class of fit target general-purpose thread tolerances. At 2.125 inches overall length, it fits standard tap holders and CNC tooling setups. It is suited for soft to medium-hardness metals where high-speed steel cutting performance is appropriate. Installation is performed by machinists, tool and die workers, and maintenance technicians working with light fastener hardware.

Key Features

• 8-32 UNC thread form with right-hand thread direction for standard fastener applications
• 45-degree helix angle with fast flute style promotes efficient upward chip evacuation in blind holes
• Modified bottoming chamfer allows threading closer to hole bottom than a standard plug tap
• H3 thread limit ensures consistent 2B class of fit across production runs
• High-speed steel construction provides good wear resistance for general-purpose tapping
• Bright, uncoated finish — compatible with standard cutting fluids and tapping compounds

Compatibility

Designed as an OEM-style replacement or direct-use tap for any application requiring 8-32 UNC internal threads at a 2B class of fit using standard tap holders accepting this shank size.

Installation Notes

This tap is installed by machinists or maintenance technicians using a standard tap wrench, tapping head, or CNC rigid-tap cycle. Always drill the correct 8-32 tap drill size and apply an appropriate cutting fluid or tapping compound before threading. Secure the workpiece firmly and align the tap perpendicular to the drilled hole to avoid tap breakage. Back the tap off periodically when hand-tapping to break chips, and do not force the tap if resistance increases unexpectedly.