Eagle Cutting Tool SP-640-P-I 6-40 Hss Spiral Point Plug Tap

Product Description

The EAGLE CUTTING TOOL SP-640-P-I is a 6-40 high-speed steel (HSS) spiral point plug tap designed for threading operations in ferrous and non-ferrous materials. The spiral point geometry pushes chips forward ahead of the tap, keeping the flutes clear and reducing the risk of chip packing in through-hole applications. This tap follows a plug chamfer style, providing a gradual lead that distributes cutting load across several threads. Machinists, tool-and-die professionals, and maintenance technicians use this tap for producing clean, accurate 6-40 UNF internal threads in production and repair settings.

This tap is suited for through-hole threading in materials such as mild steel, aluminum, brass, and plastics. The 6-40 thread form is a fine-pitch unified thread commonly used in precision instrument work, small fastener applications, and light mechanical assemblies. The spiral point design makes it well-suited for CNC tapping operations as well as hand tapping when used with a proper tap wrench and cutting fluid.

Key Features

• HSS construction provides hardness and wear resistance for general-purpose threading
• Spiral point geometry pushes chips forward, ideal for through-hole applications
• Plug chamfer style distributes cutting load for smooth thread entry
• 6-40 UNF fine-pitch thread form suited for precision and instrument applications
• Compatible with standard tap wrenches and CNC tapping chucks

Compatibility

Designed as a standard 6-40 UNF spiral point plug tap for use in through-hole threading applications across general machining and maintenance environments.

Installation Notes

This tap is installed by machinists or maintenance technicians using a calibrated tap wrench or CNC tapping holder. Always apply cutting fluid appropriate for the workpiece material before tapping to extend tool life and improve thread quality. Ensure the tap is started square to the workpiece to prevent thread misalignment or tap breakage. Do not apply excessive downward force on the tap handle, as 6-40 is a small-diameter tap and is susceptible to breakage under side load or binding.

Technical Specifications

• Thread Size: 6-40 UNF
• Tap Style: 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-640-P-I