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

Product Description

The EAGLE CUTTING TOOL HT-3750-24-B-I is a 3/8-24 UNF high-speed steel (HSS) hand bottom tap designed to cut threads to the bottom of blind holes. The bottom chamfer allows threading closer to the hole floor than plug or taper taps, making it well suited for applications where full thread depth in a shallow or closed-end bore is required. At 0.31 pounds, it is lightweight enough for bench or hand-tapping operations. Plumbers, pipefitters, HVAC technicians, electricians, and general-trade mechanics reach for this tap when threading fastener holes in ferrous and non-ferrous metals, pipe fittings, brackets, and equipment housings.

This tap is intended for hand-tapping operations in maintenance, repair, and fabrication settings across residential, commercial, and light industrial environments. The 3/8-24 UNF thread specification is a fine-pitch designation commonly found in precision mechanical assemblies, hydraulic fittings, instrumentation mounts, and HVAC equipment hardware. It is appropriate for use in any shop or field setting where a bottom-finish thread is needed in an existing drilled hole.

Key Features

• Bottom chamfer design threads blind holes to near-full depth
• 3/8-24 UNF fine-thread specification for precision fastener applications
• High-speed steel (HSS) construction provides hardness and wear resistance for threading steel, aluminum, and similar materials
• Lightweight at 0.31 pounds, suitable for hand-tapping with a standard tap wrench
• Minimum order quantity of 1 unit for single-piece procurement

Compatibility

Designed as a standard 3/8-24 UNF hand bottom tap compatible with any tap wrench or holder accepting a standard square-drive shank in this size range.

Installation Notes

This tap is installed by hand using a tap wrench; power tapping is not recommended unless the tool is rated for it. The workpiece should be secured in a vise before threading begins. Use a cutting fluid appropriate for the base material to extend tap life and improve thread quality. Back the tap off periodically to break chips and prevent binding, especially in deep blind holes.

Technical Specifications

• Thread Size: 3/8-24 UNF
• Tap Type: Hand Bottom
• Material: High-Speed Steel (HSS)
• Weight: 0.31 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-3750-24-B-I