Eagle Cutting Tool HT-448-P-D 4-48 Hss Hand Plug Tap

Product Description

The EAGLE CUTTING TOOL HT-448-P-D is a 4-48 high-speed steel (HSS) hand plug tap manufactured in the USA. Plug taps feature a chamfer on the first 3 to 5 threads, making them the standard starting choice for most through-hole and open-bottom tapping applications. The 4-48 designation identifies this as a No. 4 diameter tap with 48 threads per inch (UNF fine thread series). At 0.04 pounds, it is a lightweight precision tool suited for small fastener work. Licensed machinists, tool-and-die workers, maintenance technicians, and skilled tradespeople use this tap for threading small-diameter holes by hand.

This tap is designed for hand tapping operations in ferrous and non-ferrous metals, plastics, and similar materials where a No. 4-48 UNF fine thread is required. Typical applications include instrument panels, electronics enclosures, small mechanical assemblies, and precision fabrication work where fine-thread engagement is critical for load distribution and vibration resistance. It is a practical addition to any tap-and-die set used in light industrial, maintenance, or production environments.

Key Features

• 4-48 UNF fine thread profile for small-diameter precision threading
• High-speed steel (HSS) construction provides durability and wear resistance
• Plug chamfer (3 to 5 thread lead) suits most standard through-hole tapping
• USA manufactured for consistent dimensional accuracy
• Lightweight at 0.04 pounds for easy single-hand control

Compatibility

Designed for hand tapping applications requiring a 4-48 UNF thread form in through-hole or open-bottom workpieces across a range of materials.

Installation Notes

Hand taps are installed by machinists and maintenance technicians using a standard tap wrench. Always secure the workpiece before tapping and use appropriate cutting fluid to extend tap life and improve thread finish. Apply steady, even pressure and back off periodically to break chips and prevent tap breakage. Never force a tap — broken taps in small diameters are difficult to remove.

Technical Specifications

• Thread Size: 4-48
• Thread Series: UNF (fine)
• Tap Type: Hand Plug Tap
• Material: High-Speed Steel (HSS)
• Country of Origin: USA
• Weight: 0.04 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-448-P-D