Titan Usa TT91086 Spiral Point Plug Tap 1/2-13 Unc Hss

Product Description

The TITAN USA TT91086 is a spiral point plug tap designed for through-hole threading applications in a wide range of general-purpose materials. It cuts a 1/2-13 UNC right-hand thread and is manufactured from high-speed steel (HSS) with a bright, uncoated finish. The plug chamfer provides a gradual lead-in that suits most standard through-hole tapping operations. With 3 flutes and an H5 thread limit, the TT91086 maintains close dimensional control and is rated for both 2B and 3B class of fit. Machinists and maintenance tradespeople rely on this tap for production and repair threading where chip-pushing performance and thread accuracy are required.

This tap is suited for through-hole threading in mild steel, aluminum, brass, and similar general-purpose materials in both shop and field environments. Typical applications include fabrication work, machine assembly, and maintenance repair operations where a 1/2-13 UNC thread is required. The spiral point geometry pushes chips ahead of the cutting edge, making it well-suited for use in CNC tapping cycles, drill presses, or hand-tapping fixtures where chip evacuation in a blind or through-hole is a concern.

Key Features

• 1/2-13 UNC thread form with right-hand cutting direction
• Spiral point design pushes chips forward for cleaner through-hole threading
• Plug chamfer provides gradual lead-in suitable for most through-hole setups
• H5 thread limit supports tight 2B and 3B class of fit tolerances
• High-speed steel construction for general-purpose material applications
• Bright, uncoated finish — no coating buildup at the cutting edge

Compatibility

Designed as an OEM-style replacement and general-use tap for applications requiring a 1/2-13 UNC right-hand thread in through-hole configurations across general-purpose materials.

Installation Notes

This tap is installed by machinists, tool-and-die tradespeople, and maintenance technicians using a tapping head, CNC spindle, drill press, or hand tap wrench. Always ensure the workpiece is securely fixtured and that the tap is properly aligned with the pilot hole before beginning the cut. Use an appropriate cutting fluid for the workpiece material to extend tap life and improve thread finish. Follow shop safety practices and inspect the tap for wear or chipping before each use.