Eagle Cutting Tool HT-8750-14-B-D 7/8-14 Hss Bottom Tap

Product Description

The EAGLE CUTTING TOOL HT-8750-14-B-D is a 7/8-14 high-speed steel (HSS) bottom tap manufactured in the USA. Bottom taps are designed to cut threads to the bottom of a blind hole, producing fully formed threads closer to the hole base than a taper or plug tap allows. This tap is built for use in metal fabrication, maintenance, and repair work across plumbing, mechanical, and industrial trade applications. At 1.78 pounds, it is a solid, production-grade tool suited for bench work and machine use alike.

This tap is used when a blind hole requires maximum thread depth, such as when threading pipe fittings, brackets, or structural components. The 7/8-14 designation indicates a 7/8-inch major diameter with 14 threads per inch (TPI), a fine-thread pitch common in automotive, hydraulic, and mechanical assembly work. Machinists, pipefitters, millwrights, and maintenance technicians are the typical end users for this tool.

Key Features

• Bottom tap geometry cuts threads to the base of blind holes for maximum thread engagement
• High-speed steel (HSS) construction provides hardness and wear resistance across ferrous and non-ferrous materials
• 7/8-14 fine-thread profile suits hydraulic fittings, mechanical fasteners, and precision assemblies
• USA manufactured to consistent dimensional tolerances
• Minimum order quantity of 1 unit, suitable for single-use service calls or shop stocking

Compatibility

Designed as an OEM-style replacement and general-use bottom tap for any application requiring 7/8-14 UNF threading in blind or through holes.

Installation Notes

This tap should be used with a proper tap wrench or machine tap holder sized for the shank diameter. Always apply cutting fluid when tapping steel or stainless to extend tool life and improve thread quality. Clear chips frequently when working in blind holes to prevent tap breakage. Follow standard machining practices and applicable shop safety procedures when operating.

Technical Specifications

• Thread Size: 7/8-14
• Thread Standard: UNF (Unified Fine)
• Tap Type: Bottom
• Material: High-Speed Steel (HSS)
• Weight: 1.78 pounds
• Country of Origin: USA

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-8750-14-B-D