Eagle Cutting Tool HT-13750-12-B-I Hss Hand Bottom Tap

Product Description

The EAGLE CUTTING TOOL HT-13750-12-B-I is a high-speed steel (HSS) hand bottom tap designed to cut full threads to the bottom of a blind hole. With a 1-3/8 inch diameter and 12 threads per inch (TPI) thread pitch, this tap is suited for threading operations that require complete thread engagement close to the floor of a hole. Bottom taps have minimal chamfer — typically 1 to 2 threads — allowing them to finish threads that a taper or plug tap has already started. Machinists, pipefitters, and maintenance technicians use this style of tap for precision threading work on ferrous and non-ferrous metals.

This tap is used in hand-tapping applications where a blind hole must be threaded as deeply as possible. It is appropriate for repair work, fabrication, and maintenance environments where a manual tap handle or adjustable wrench is used to drive the tool. The import designation indicates a cost-effective sourcing tier suitable for general-purpose threading tasks rather than high-volume production runs.

Key Features

• HSS construction provides hardness and wear resistance for threading steel, aluminum, and similar materials
• Bottom chamfer (1 to 2 thread lead) allows threading to the base of a blind hole
• 1-3/8 inch diameter by 12 TPI thread specification for large-fastener applications
• Designed for hand-tapping use with a standard tap wrench or adjustable handle
• Minimum order quantity of 1 unit — no bulk purchase required

Compatibility

Designed as an OEM-style replacement and general-use hand bottom tap for 1-3/8 inch by 12 TPI threaded hole applications across maintenance, repair, and fabrication settings.

Installation Notes

A licensed machinist or qualified maintenance technician should perform tapping operations using a properly sized tap wrench. Always use cutting fluid appropriate for the workpiece material to reduce friction and extend tap life. Back the tap out frequently to clear chips and prevent tap breakage, especially in deeper blind holes. Secure the workpiece firmly before beginning any threading operation.

Technical Specifications

• Thread Diameter: 1-3/8 inches
• Thread Pitch: 12 TPI
• Tap Type: Hand Bottom Tap
• Material: High-Speed Steel (HSS)
• Weight: 0.31 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-13750-12-B-I