Eagle Cutting Tool HT-4375-14-B-I 7/16-14 Hss Bottom Tap

Product Description

The EAGLE CUTTING TOOL HT-4375-14-B-I is a 7/16-14 high-speed steel (HSS) hand bottom tap designed for threading operations that require cutting threads to the very bottom of a blind hole. The bottom tap geometry features minimal lead threads, allowing the tool to reach as close as possible to the hole floor. At 0.31 pounds, it is a lightweight, hand-driven tool suited for bench work, maintenance, and fabrication tasks where a bottoming thread profile is required. Machinists, millwrights, and maintenance technicians working with ferrous and non-ferrous metals rely on this tap for accurate, clean thread finishing.

This bottom tap is used in applications where a standard taper or plug tap has already started the thread and a fully formed thread at the base of a blind hole is needed. Common scenarios include machine repair, fixture fabrication, and field maintenance work across industrial, mechanical, and trade environments. It is sized for the 7/16-14 thread specification, which is a Unified National Coarse (UNC) thread form widely used in structural and mechanical fastening applications.

Key Features

• 7/16-14 UNC thread size for high-frequency fastener compatibility
• Bottom tap geometry threads to the base of blind holes
• High-speed steel (HSS) construction for durability and wear resistance
• Hand tap design for manual use with a tap wrench or T-handle
• Lightweight at 0.31 pounds for easy handling and portability

Compatibility

Designed as a standard hand bottom tap for use in any application requiring a 7/16-14 UNC thread form. Intended for use following a taper or plug tap when threading blind holes to full depth.

Installation Notes

This tap is a hand-driven tool and should be used with an appropriate tap wrench sized for the tap shank. Apply cutting fluid or tapping oil appropriate for the workpiece material before and during threading to reduce heat and extend tool life. Back the tap out periodically to clear chips and prevent binding or breakage. Ensure the tap is started perpendicular to the workpiece surface to maintain thread alignment.

Technical Specifications

• Thread Size: 7/16-14 UNC
• Tap Type: Hand Bottom Tap
• Material: High-Speed Steel (HSS)
• Weight: 0.31 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-4375-14-B-I