Eagle Cutting Tool HT-2500-20-P-D 1/4-20 Hss Hand Plug Tap

Product Description

The EAGLE CUTTING TOOL HT-2500-20-P-D is a 1/4-20 high-speed steel (HSS) hand plug tap manufactured in the USA. Plug taps are the most common starting tap for hand-threading operations, featuring a chamfer of approximately 3 to 5 threads that allows the tap to enter a hole and begin cutting with moderate lead-in. This tap cuts 1/4-inch diameter threads at 20 threads per inch (TPI), a coarse-pitch Unified National Coarse (UNC) thread form widely used in general mechanical assembly. It is suited for plumbers, electricians, HVAC technicians, and maintenance tradespeople who need to chase, repair, or create internal threads in metal components in the field or shop.

This tap is appropriate for hand-tapping applications in ferrous and non-ferrous metals where a 1/4-20 UNC internal thread is required. Typical applications include threading holes in electrical enclosures, pipe hangers, HVAC equipment brackets, valve bodies, and general structural hardware. The plug chamfer profile makes it practical for through-holes and moderately deep blind holes where full thread engagement close to the bottom is not critical. It is a standard shop and field tap carried by trade professionals for repair and fabrication work.

Key Features

• 1/4-20 UNC thread form — the most common coarse-pitch size in general mechanical and trade work
• High-speed steel (HSS) construction provides durability across a range of metals including mild steel, aluminum, and brass
• Plug chamfer (3 to 5 thread lead-in) balances ease of starting with usable thread depth in through-holes and most blind holes
• USA manufactured for consistent thread tolerance and cutting geometry
• Lightweight at 0.06 pounds — compact for tool pouches and portable tap kits

Compatibility

Designed for use in any application requiring a 1/4-20 UNC internal thread. Compatible with standard 1/4-20 tap wrenches and T-handle tap holders used in hand-tapping operations.

Installation Notes

Hand plug taps are installed by licensed tradespeople and experienced technicians using a tap wrench or T-handle holder. Always drill the correct tap drill size for 1/4-20 threads before tapping, and apply cutting fluid to reduce friction and extend tap life. Back the tap off a half turn for every full turn forward to break chips, particularly in blind holes. Inspect threads after tapping using a thread gauge or a known-good 1/4-20 fastener before assembly.

Technical Specifications

• Thread Size: 1/4-20 UNC
• Thread Standard: Unified National Coarse (UNC)
• 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-2500-20-P-D