Eagle Cutting Tool HT-6250-11-B-D 5/8-11 Hss Bottom Tap

Product Description

The EAGLE CUTTING TOOL HT-6250-11-B-D is a 5/8-11 high-speed steel (HSS) hand bottom tap manufactured in the USA. Bottom taps are ground with minimal chamfer on the leading threads, allowing the tap to cut threads as close to the bottom of a blind hole as possible. This tool is driven by hand using a standard tap wrench and is suited for threading operations in metal fabrication, maintenance, and repair work. At 0.32 pounds, it is a compact, single-piece cutting tool designed for controlled, precise thread-cutting in through holes and blind holes alike.

The HT-6250-11-B-D is used wherever a 5/8-11 UNC thread must be cut or restored in a blind hole application. Typical scenarios include threading bolt holes in machinery, equipment frames, and structural components during fabrication or field repair. Machinists, millwrights, pipefitters, and maintenance technicians reach for a bottom tap when a taper or plug tap has already established the thread and the full depth of the blind hole must be threaded out. It is equally useful for chasing and restoring damaged 5/8-11 threads.

Key Features

• Bottom chamfer geometry threads to within 1-2 threads of blind hole bottom
• High-speed steel (HSS) construction provides hardness and wear resistance for threading steel, iron, and aluminum
• 5/8-11 UNC thread form for standard unified coarse-thread applications
• USA manufactured for consistent dimensional accuracy and cutting geometry
• Hand-drive design compatible with standard tap wrenches and T-handles

Compatibility

Designed for use in any application requiring a 5/8-11 UNC hand bottom tap, including blind hole threading and thread restoration in ferrous and non-ferrous metals.

Installation Notes

This tap is a hand-drive cutting tool installed by a machinist or maintenance technician using a tap wrench. Secure the workpiece firmly before tapping and apply a suitable cutting fluid to extend tool life and improve thread finish. Back the tap off periodically to break chips, especially in blind holes, to prevent tap breakage. Follow standard shop safety practices including eye protection whenever cutting tools are in use.

Technical Specifications

• Thread Size: 5/8-11 UNC
• Tap Type: Hand Bottom Tap
• Material: High-Speed Steel (HSS)
• Country of Origin: USA
• Weight: 0.32 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-6250-11-B-D