Eagle Cutting Tool HT-2500-28-P-D 1/4-28 Hss Hand Plug Tap

Product Description

The EAGLE CUTTING TOOL HT-2500-28-P-D is a 1/4-28 high-speed steel (HSS) hand plug tap manufactured in the USA. Plug taps are the standard starting tap for most threading jobs, with a chamfer on the first 3-5 threads that eases entry into a pre-drilled hole and distributes cutting load across multiple threads. This tap is sized for the 1/4-28 UNF (Unified Fine Thread) standard, a fine-pitch thread common in precision mechanical assemblies, instrumentation, and fluid fittings. It is designed for hand tapping operations using a tap wrench or T-handle and is suited for use in steel, cast iron, aluminum, brass, and similar materials.

The 1/4-28 thread size sees wide use in HVAC, plumbing, electrical, and general mechanical trade work, particularly where fine-thread engagement is needed for secure fastening in thin-walled or vibration-prone assemblies. Typical applications include threading blind or through holes in brackets, fittings, valve bodies, and control enclosures. This tap is used by machinists, maintenance technicians, pipefitters, and field service professionals who need a reliable hand tap for production or repair threading work.

Key Features

• 1/4-28 UNF fine-thread profile for precise thread engagement
• Plug chamfer (approximately 3-5 threads) suits the majority of through-hole and open blind-hole tapping applications
• High-speed steel construction provides hardness and wear resistance across a range of workpiece materials
• USA manufactured to standard tap geometry and tolerances
• Minimum order quantity of 1 — suitable for single-unit purchase

Compatibility

Designed as a standard hand plug tap for any application requiring 1/4-28 UNF internal threads. Compatible with standard 1/4-28 tap wrenches and T-handle drivers.

Installation Notes

Use the correct tap drill size for 1/4-28 UNF threads before tapping to ensure proper thread form and avoid breakage. Secure the workpiece firmly and align the tap square to the hole before applying torque. Apply cutting fluid appropriate to the workpiece material throughout the tapping operation. Back the tap off periodically to break chips and prevent tap binding or breakage in deeper holes.

Technical Specifications

• Thread Size: 1/4-28 UNF
• Tap Type: Hand Plug Tap
• Material: High-Speed Steel (HSS)
• Country of Origin: USA
• Weight: 0.06 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-2500-28-P-D