Eagle Cutting Tool SP-10000-8-P-I Hss Spiral Point Plug Tap

Product Description

The EAGLE CUTTING TOOL SP-10000-8-P-I is a 1-8 high-speed steel (HSS) spiral point plug tap designed for cutting internal threads in through-holes. The spiral point geometry pushes chips forward ahead of the tap rather than packing them in the flutes, reducing the risk of chip buildup and tap breakage during production threading operations. At 0.73 pounds, this is a robust hand or machine tap suited for use in general metalworking, maintenance, and fabrication environments. Licensed machinists, tool-and-die makers, pipefitters, and maintenance technicians commonly specify this tap size for 1-8 UN threaded connections.

This tap is appropriate for threading through-holes in ferrous and non-ferrous metals where a 1-8 unified coarse (UNC) thread form is required. The plug chamfer — typically 3 to 5 threads of lead — makes it well-suited as an all-purpose starting tap when entering a pre-drilled hole, balancing cutting load across the lead threads. It performs in both manual tapping and CNC or drill-press-assisted machine tapping setups. Import-grade HSS construction makes it a cost-effective option for job-shop use or lower-volume threading applications.

Key Features

• Spiral point geometry drives chips forward for clean through-hole threading
• Plug chamfer lead distributes cutting load across multiple threads for easier starting
• HSS construction provides hardness and wear resistance suitable for general metalworking
• 1-8 thread size covers a widely used UNC fastener diameter and pitch
• Compatible with standard tap wrenches and machine tap holders for versatile use

Compatibility

Designed as an OEM-style replacement or stock tap for any application requiring a 1-8 UNC spiral point plug tap in HSS construction.

Installation Notes

Threading operations should be performed by a qualified machinist or maintenance technician familiar with proper tap alignment and cutting fluid use. Always ensure the workpiece is securely clamped before tapping, and use an appropriate cutting fluid or tapping compound for the material being threaded. When tapping by hand, periodically reverse the tap a half-turn to break chips and reduce the risk of tap seizure. Inspect the tap for wear or chipping before each use and replace when thread quality degrades.

Technical Specifications

• Thread Size: 1-8 UNC
• Tap Style: Spiral Point Plug
• Material: High-Speed Steel (HSS)
• Weight: 0.73 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: SP-10000-8-P-I