Eagle Cutting Tool HT-22500-8-B-I Hand Bottom Tap 2-1/4in 8TPI

Product Description

The EAGLE CUTTING TOOL HT-22500-8-B-I is a hand bottom tap designed for cutting internal threads to the bottom of a blind hole. This tap carries a 2-1/4-inch diameter and an 8 threads-per-inch (TPI) pitch, making it suited for heavy-duty threading tasks where full thread depth at the base of the hole is required. It is used manually with a tap wrench and is intended for machinists, pipefitters, millwrights, and maintenance technicians working on large-diameter fastener applications in metal fabrication, industrial maintenance, and repair work.

This bottom tap is applicable in scenarios where a plug or taper tap has already started the thread and a full thread run-out to the bottom of a blind hole is needed. The 2-1/4-inch by 8 TPI specification corresponds to a coarse unified national thread form commonly found in heavy structural and industrial equipment assemblies. It is typically used in shop or field maintenance environments where large threaded connections must be reworked or newly cut in ferrous and non-ferrous metals.

Key Features

• Bottom tap geometry allows threading to the full depth of a blind hole
• 2-1/4-inch diameter with 8 TPI coarse thread pitch for heavy industrial applications
• Designed for manual use with a standard tap wrench
• Import construction suitable for general maintenance and repair threading tasks
• Minimum order quantity of 1 unit

Compatibility

Designed as an OEM-style replacement or standard hand tap for use in applications requiring 2-1/4-8 unified national coarse internal threads in blind-hole configurations.

Installation Notes

This tap is installed by machinists or maintenance technicians using a properly sized tap wrench. Always ensure the workpiece is securely clamped and the tap is started straight and square to the hole before applying cutting pressure. Use appropriate cutting fluid for the material being threaded to reduce tool wear and improve thread quality. Do not force the tap against the bottom of the hole without clearing chips, as breakage can result.

Technical Specifications

• Thread Diameter: 2-1/4 inches
• Thread Pitch: 8 TPI
• Tap Type: Hand Bottom Tap
• Weight: 6.3 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-22500-8-B-I