Eagle Cutting Tool HT-1228-T-D 12-28 Hss Taper Tap

Product Description

The EAGLE CUTTING TOOL HT-1228-T-D is a 12-28 high-speed steel taper tap manufactured in the USA. This hand tap is used to cut internal threads in metal workpieces, starting the threading process with a gradual taper that makes thread engagement easier. The 12-28 designation identifies the thread size as a number 12 diameter with 28 threads per inch, a fine-pitch unified national thread form. At 0.08 pounds, it is a compact, lightweight tool suited for precision threading in tight applications. Licensed machinists, pipefitters, HVAC technicians, and electricians reach for taper taps when starting threads in new holes or clearing damaged threads in metal brackets, enclosures, and fittings.

This taper tap is used in metalworking applications where a 12-28 thread must be cut in steel, aluminum, brass, or similar metals. It is appropriate for both shop and field use, including threading holes in electrical enclosures, HVAC equipment panels, mounting brackets, and mechanical assemblies. The taper entry reduces cutting force on entry and helps align the tap square to the workpiece, which is especially useful when threading by hand. USA manufacture is noted on the product.

Key Features

• 12-28 thread form — number 12 diameter, 28 threads per inch, fine-pitch unified national thread
• High-speed steel (HSS) construction for durability across a range of metals
• Taper style entry distributes cutting load gradually for easier thread starting
• USA manufactured
• Lightweight at 0.08 pounds — suitable for field toolkits

Compatibility

Designed for use in any application requiring a 12-28 UNF internal thread, including metalwork in HVAC, electrical, plumbing, and general mechanical trade applications.

Installation Notes

This tap is installed by hand or with a standard tap wrench; use of a proper tap wrench is recommended to maintain alignment and avoid breakage. Always secure the workpiece before tapping and apply a suitable cutting fluid to extend tool life and improve thread quality. Back the tap out periodically to clear chips, particularly when threading deeper holes. Disposal of metal chips and spent cutting fluid should follow applicable shop safety practices.

Technical Specifications

• Thread Size: 12-28
• Thread Form: UNF (Unified National Fine)
• Tap Style: Taper
• Material: High-Speed Steel (HSS)
• Weight: 0.08 pounds
• Country of Origin: USA

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-1228-T-D