Eagle Cutting Tool HT-10000-8-B-I 1-8 Hss Bottom Tap

Product Description

The EAGLE CUTTING TOOL HT-10000-8-B-I is a 1-8 UNC high-speed steel (HSS) hand bottom tap designed for cutting full threads to the bottom of blind holes. This tap is classified as a bottoming tap, meaning it has minimal chamfer lead threads, allowing it to thread nearly to the base of a drilled hole. It is used in manual tapping operations with a tap wrench or handle and is well suited for maintenance, repair, and fabrication work across a wide range of materials. The import designation reflects its manufacturing origin while maintaining standard ANSI thread geometry for 1-8 UNC applications.

This bottom tap is appropriate for threading 1-inch diameter holes with 8 threads per inch in metal fabrication, machine shops, and general industrial maintenance environments. It is typically used as the final tap in a progressive tapping sequence following a taper and plug tap, ensuring complete thread engagement to the bottom of a blind hole. Both professional machinists and skilled tradespeople performing structural or mechanical assembly work will find this tap suited to their threading requirements.

Key Features

• Bottom tap style with minimal chamfer for threading to the base of blind holes
• High-speed steel (HSS) construction for durability and resistance to heat during cutting
• 1-8 UNC thread specification for standard inch-series coarse-thread applications
• Designed for manual hand tapping with a standard tap wrench or handle
• Suitable for use as the finishing tap in a taper-plug-bottom tapping sequence

Compatibility

Designed as an OEM-style replacement and standard tooling option for 1-8 UNC hand tapping applications in metal fabrication, maintenance, and repair operations.

Installation Notes

This tap is installed using a standard tap wrench and should be used with appropriate cutting fluid to reduce friction and extend tool life. Ensure the workpiece is securely clamped before beginning the tapping operation. Use a taper tap first to start the thread, followed by a plug tap, then this bottom tap to complete threading in blind holes. Inspect the tap for wear or chipping before each use to avoid thread damage or tap breakage.

Technical Specifications

• Thread Size: 1-8 UNC
• Tap Type: Bottom (Bottoming)
• Material: High-Speed Steel (HSS)
• Operation Type: Hand Tap
• Weight: 0.63 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-10000-8-B-I