Eagle Cutting Tool SP-8750-14-P-I Hss Spiral Point Plug Tap

Product Description

The EAGLE CUTTING TOOL SP-8750-14-P-I is a high-speed steel (HSS) spiral point plug tap designed for cutting internal threads in through-hole applications. The spiral point geometry pushes chips ahead of the tap and out through the exit side of the hole, reducing chip packing and improving cutting efficiency. This tap is ground to a 7/8-14 thread form, meaning a 7/8-inch major diameter with 14 threads per inch (UNF fine thread). It is used by machinists, maintenance technicians, and trade professionals working in metal fabrication, mechanical assembly, and equipment repair.

This tap is suited for through-hole threading operations in ferrous and non-ferrous metals where chip evacuation is a priority. The plug chamfer style provides a moderate lead-in, typically 3 to 5 threads, making it appropriate for starting threads in a drilled hole and running through the full depth. It is commonly used in production and job-shop environments, as well as field repair applications requiring UNF threaded connections in steel, aluminum, or cast iron components.

Key Features

• HSS construction provides durability and heat resistance during threading operations
• Spiral point geometry pushes chips forward through the hole, reducing clogging
• Plug chamfer lead-in suits through-hole threading in most base materials
• 7/8-14 UNF thread form for fine-pitch internal thread cutting
• Minimum order quantity of 1, available as a single unit

Compatibility

Designed as an OEM-style replacement or standard tooling tap for through-hole threading applications requiring a 7/8-14 UNF thread specification.

Installation Notes

This tap is installed using a standard tap wrench, tapping head, or machine spindle appropriate for the shank size. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill diameter for 7/8-14 UNF before beginning the threading operation. Apply cutting fluid appropriate for the workpiece material to extend tap life and improve thread quality. Reverse the tap periodically during hand tapping to break chips if the material is prone to long stringy chips.

Technical Specifications

• Thread Size: 7/8-14 UNF
• Thread Standard: Unified Fine (UNF)
• Tap Style: Spiral Point Plug
• Material: High-Speed Steel (HSS)
• Weight: 0.73 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: SP-8750-14-P-I