Eagle Cutting Tool SP-448-P-I Hss Spiral Point Plug Tap 4-48

Product Description

The EAGLE CUTTING TOOL SP-448-P-I is a 4-48 high-speed steel (HSS) spiral point plug tap designed for threading small-diameter through holes in metal workpieces. The spiral point geometry pushes chips forward ahead of the cutting action, keeping the flutes clear and allowing continuous feed in through-hole applications. Built to 4-48 UNF thread standards, this tap suits precision threading work where fine thread pitch and tight tolerances are required. Machinists, tool-and-die makers, and maintenance technicians reach for this style of tap when threading small fastener holes in production or repair settings.

The SP-448-P-I is suited for use in through-hole threading applications on ferrous and non-ferrous metals including steel, aluminum, and brass. The 4-48 UNF specification makes it a common choice for instrument work, small mechanical assemblies, and electrical enclosure hardware where fine threads are standard. It is used in both manual tapping and machine tapping operations on drill presses, CNC machining centers, and tapping heads.

Key Features

• 4-48 UNF thread form for fine-pitch threading in small-diameter through holes
• High-speed steel (HSS) construction provides hardness and wear resistance across a range of common workpiece materials
• Spiral point geometry pushes chips forward to reduce clogging in through-hole applications
• Plug chamfer style provides a balance of starting ease and full thread engagement over several lead threads
• Minimum order quantity of 1 unit allows single-piece procurement

Compatibility

Designed as an OEM-style replacement and standard production tap for use in any application requiring 4-48 UNF internal threads in through-hole configurations.

Installation Notes

Tapping should be performed by a qualified machinist or maintenance technician following standard threading practices. Always use the correct tap drill size for 4-48 UNF threads before tapping, and apply cutting fluid appropriate for the workpiece material to extend tap life and improve thread quality. Secure the workpiece firmly and ensure the tap is started square to the hole to prevent tap breakage. Power down and lock out any machine tool before changing or inspecting taps per standard lockout/tagout procedures.

Technical Specifications

• Thread Size: 4-48 UNF
• Tap Type: Spiral Point Plug
• Material: High-Speed Steel (HSS)
• Weight: 0.1 pounds
• Minimum Order Quantity: 1

Standard Information

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