Eagle Cutting Tool HT-3125-24-T-I Hand Taper Tap 5/16

Product Description

The EAGLE CUTTING TOOL HT-3125-24-T-I is a 5/16-24 high-speed steel (HSS) hand taper tap designed for cutting internal threads by hand in a variety of materials. The taper lead — typically 8 to 10 threads of gradual engagement — guides the tap into the workhole smoothly, reducing the risk of misalignment at the start of the threading operation. At 0.31 pounds, this is a lightweight, single-piece tool suited for bench work, field repair, or production threading where a powered tap drive is not used. Machinists, pipefitters, maintenance technicians, and general metalworkers are the primary users.

This tap is used to cut 5/16-inch diameter threads at a 24 threads-per-inch (TPI) pitch, which is a standard Unified National Fine (UNF) thread specification. It is appropriate for threading steel, cast iron, aluminum, brass, and similar materials in thicknesses that allow full thread engagement. Common applications include machine assembly, equipment repair, and fabrication work where fine-thread fasteners are required for vibration resistance or close-tolerance fits. The import designation indicates offshore manufacture, making this a cost-effective option for general-purpose threading tasks.

Key Features

• 5/16-24 UNF thread form for fine-pitch internal threading
• High-speed steel (HSS) construction provides hardness and wear resistance across common workpiece materials
• Taper lead design eases tap alignment and start at the beginning of the cut
• Hand tap configuration — used with a standard tap wrench, no powered drive required
• Lightweight at 0.31 pounds, suitable for portable or bench use

Compatibility

Designed as a standard hand taper tap for use with any tap wrench or T-handle that accepts a 5/16-24 tap shank. Suitable for general-purpose internal thread cutting in materials compatible with HSS tooling.

Installation Notes

Use with a properly sized tap wrench to maintain control and reduce the risk of breakage. Drill the pilot hole to the correct tap drill size for 5/16-24 threads before use, and ensure the hole is free of chips. Apply cutting fluid appropriate for the workpiece material to extend tool life and improve thread quality. Back off the tap periodically to break chips when threading deeper holes.

Technical Specifications

• Thread Size: 5/16-24 UNF
• Material: High-Speed Steel (HSS)
• Tap Type: Hand Taper
• Weight: 0.31 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-3125-24-T-I