Eagle Cutting Tool SP-4375-20-P-I 7/16-20 Hss Spiral Point Plug Tap

Product Description

The EAGLE CUTTING TOOL SP-4375-20-P-I is a 7/16-20 high-speed steel (HSS) spiral point plug tap designed for cutting internal threads in through-hole applications. The spiral point geometry drives chips forward ahead of the cutting flutes, reducing clogging and allowing continuous feed in production and maintenance threading operations. This tap is sized to the 7/16-20 UNF thread standard, making it suited for fine-pitch fastener work in ferrous and non-ferrous materials. Machinists, tool-and-die technicians, and maintenance professionals reach for plug taps as the standard starting choice for most through-hole tapping jobs.

This tap is used in general machine shop, production, and field maintenance environments where fine-thread 7/16-20 UNF internal threads are required. Typical applications include threading steel, aluminum, brass, and similar machinable materials in through-hole configurations. The plug chamfer — generally 3 to 5 threads of lead — provides a gradual start that guides the tap into the hole without the aggressive engagement of a taper tap or the restricted use-case of a bottoming tap. It is equally at home in manual tap wrenches, hand drills, and machine tapping setups.

Key Features

• Spiral point design pushes chips ahead of the tap, reducing chip packing in through-hole work
• 7/16-20 UNF thread form for fine-pitch internal threading
• High-speed steel (HSS) construction provides hardness and wear resistance across common shop materials
• Plug chamfer lead suits the majority of standard through-hole tapping applications
• Minimum order quantity of 1, available as a single unit

Compatibility

Designed as an OEM-style replacement and standard tooling option for any application requiring a 7/16-20 UNF spiral point plug tap in HSS.

Installation Notes

This tap is installed by machinists and maintenance technicians using a standard tap wrench, T-handle, or machine tapping setup. Always use the correct tap drill size for 7/16-20 UNF threads before tapping, and apply cutting fluid appropriate to the workpiece material to extend tool life. Back the tap off periodically during hand tapping to break chips. Inspect the tap for chipping or wear before reuse to avoid thread damage or tap breakage.

Technical Specifications

• Thread Size: 7/16-20 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-4375-20-P-I