Eagle Cutting Tool HT-356-P-I 3-56 Hss Hand Plug Tap

Product Description

The EAGLE CUTTING TOOL HT-356-P-I is a 3-56 high-speed steel (HSS) hand plug tap designed for cutting internal threads by hand in small-diameter applications. The plug chamfer — typically 3 to 5 threads — allows the tap to start easily in through-holes and blind holes while providing a smooth, accurate thread form. At 0.31 pounds, this is a lightweight, single-piece cutting tool suited for bench work and field threading tasks. Machinists, pipefitters, electricians, and maintenance technicians keep plug taps like this on hand for repair threading and new-thread cutting in metal components where power tapping equipment is not practical.

The HT-356-P-I is used for cutting 3-56 Unified National Coarse (UNC) threads by hand in metal workpieces. The 3-56 designation indicates a No. 3 nominal diameter with 56 threads per inch, making this tap appropriate for very fine, small-diameter threaded fastener work common in instrument panels, electrical enclosures, and precision assemblies. It is driven with a standard tap wrench and is suitable for both production repair work and original assembly in light industrial and trade environments.

Key Features

• 3-56 thread form for small-diameter internal thread cutting
• High-speed steel (HSS) construction for durability across a range of metals
• Plug chamfer profile eases starting in through-holes and blind holes
• Lightweight at 0.31 pounds for easy single-hand use with a tap wrench
• Import-grade tap suitable for general maintenance and repair threading

Compatibility

Designed as an OEM-style replacement or standard hand plug tap for use wherever 3-56 UNC internal threads are required in metal components.

Installation Notes

This tap is intended for hand use only with a properly sized tap wrench — do not attempt to drive it with power tools, as breakage can result in damaged workpieces. Secure the workpiece firmly before threading and apply cutting fluid appropriate for the base metal to extend tap life and improve thread quality. If the tap binds during cutting, back it off a half turn to break the chip before continuing forward. Follow applicable shop safety practices and wear eye protection when tapping.

Technical Specifications

• Thread Size: 3-56
• Thread Standard: UNC (Unified National Coarse)
• Material: High-Speed Steel (HSS)
• Tap Type: Hand Plug Tap
• Weight: 0.31 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-356-P-I