Eagle Cutting Tool HT-3750-24-B-D 3/8-24 Hss Bottom Tap

Product Description

The EAGLE CUTTING TOOL HT-3750-24-B-D is a 3/8-24 high-speed steel (HSS) hand bottom tap manufactured in the USA. Bottom taps are ground with minimal chamfer on the leading threads, allowing them to cut full threads to the bottom of a blind hole. This tap is used in hand tapping operations and is well suited for threading tasks where a thread must be run as close to the bottom of a stopped bore as possible. Machinists, pipefitters, and general metalworkers rely on bottom taps as the final step in a three-tap sequence or as the go-to choice for through-hole cleanup in tight-tolerance work.

This tap is appropriate for threading 3/8-24 UNF (Unified Fine Thread) holes in a range of metals and materials. The fine thread pitch makes it a common choice in automotive, mechanical, and precision assembly applications where a finer thread engagement is required compared to coarse thread equivalents. It is designed for hand tapping use with a standard tap wrench or T-handle.

Key Features

• Bottom chamfer geometry allows threading to the base of blind holes
• High-speed steel construction provides durability across a range of workpiece materials
• 3/8-24 UNF thread form for fine-pitch threading applications
• USA manufactured for consistent dimensional accuracy
• Compatible with standard tap wrenches and T-handle drivers

Compatibility

Designed as a hand bottom tap for 3/8-24 UNF threaded hole applications. Intended for use with standard tap wrenches sized for the tap square drive.

Installation Notes

Always secure the workpiece before tapping and use a cutting fluid or tapping compound appropriate for the workpiece material to reduce friction and extend tap life. Ensure the tap is started square to the hole to prevent cross-threading or breakage. For blind holes, clear chips frequently by backing the tap out to prevent chip packing at the bottom of the bore. This work is typically performed by machinists or maintenance technicians following standard shop practice.

Technical Specifications

• Thread Size: 3/8-24 UNF
• 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-3750-24-B-D