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

Product Description

The EAGLE CUTTING TOOL HT-448-P-I is a 4-48 UNF high-speed steel hand plug tap designed for cutting internal threads in metal workpieces by hand. The plug chamfer style features a gradual lead that makes it well suited for through-hole threading applications where starting ease and controlled thread engagement are priorities. Machined from high-speed steel, this tap holds an edge through repeated use in ferrous and non-ferrous metals. It weighs 0.31 pounds, making it easy to handle during manual tapping operations.

This tap is intended for use in maintenance, repair, and fabrication work wherever a 4-48 UNF thread must be cut or chased. The 4-48 thread designation refers to a No. 4 screw diameter with 48 threads per inch, a fine-pitch specification commonly found in precision instrumentation, small mechanical assemblies, and electronics hardware. Machinists, maintenance technicians, and tool-and-die workers typically reach for a hand tap in this size when reworking damaged threads or threading new holes in tight quarters.

Key Features

• 4-48 UNF thread form for fine-pitch internal thread cutting
• Plug chamfer provides gradual lead for through-hole applications
• High-speed steel construction retains cutting edge through repeated use
• Manual hand tap design compatible with standard tap wrenches
• Lightweight at 0.31 pounds for comfortable hand-tool operation

Compatibility

Designed as an OEM-style replacement or standard hand tap for any application requiring a 4-48 UNF plug tap, compatible with standard tap wrench drives used in manual threading operations.

Installation Notes

This tap is installed by hand using a tap wrench; power-driving a hand tap is not recommended as it increases the risk of breakage. Always secure the workpiece firmly and apply cutting fluid appropriate for the base material before starting the thread. Ensure the tap enters the hole square to avoid cross-threading or tap breakage. Follow applicable shop safety practices when working with cutting tools.

Technical Specifications

• Thread Size: 4-48 UNF
• Tap Type: Hand Plug Tap
• Material: High-Speed Steel (HSS)
• Weight: 0.31 pounds

Standard Information

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