Eagle Cutting Tool HT-164-T-I 1-64 Hss Hand Taper Tap

Product Description

The EAGLE CUTTING TOOL HT-164-T-I is a 1-64 high-speed steel (HSS) hand taper tap designed for cutting internal threads by hand in small-diameter through holes and blind holes. The 1-64 designation indicates a 1-inch major diameter with 64 threads per inch (TPI), placing this in the coarse unified national thread series for large-diameter fastener applications. HSS construction provides the hardness and edge retention needed to thread steel, cast iron, aluminum, and similar materials. This tap is the taper style, meaning it has a gradual lead that distributes cutting load across several threads, making it easier to start and align in the hole. Machinists, tool and die workers, and maintenance technicians use hand taper taps when threading large holes that require controlled, manual torque.

The HT-164-T-I is suited for maintenance, repair, and fabrication work where 1-64 UNC internal threads are required. Taper taps are typically the first tap used in a threading sequence, particularly in harder materials or deep holes where a gradual cutting approach reduces the risk of tap breakage. This import-grade tap is appropriate for job-shop environments, field repair, and applications where cost-effective tooling is practical. It is used in hand-tapping operations with a standard tap wrench or T-handle.

Key Features

• 1-64 thread specification for large-diameter, coarse-pitch internal threading
• High-speed steel (HSS) construction for hardness and wear resistance across common workpiece materials
• Taper lead design distributes cutting load gradually, aiding alignment and reducing breakage risk
• Hand tap style compatible with standard tap wrenches and T-handles
• Import grade offers a cost-effective option for general maintenance and repair threading

Compatibility

Designed for use in any application requiring 1-64 UNC internal threads, used with standard hand tap wrenches sized for large-diameter taps.

Installation Notes

A licensed machinist or experienced technician should select the correct tap drill size for the 1-64 thread before starting. Secure the workpiece and use a tap wrench to maintain perpendicular alignment throughout the threading operation. Apply appropriate cutting fluid for the workpiece material to reduce friction and extend tap life. Back off a quarter turn periodically to break chips and prevent binding, particularly in deep holes or harder materials.

Technical Specifications

• Thread Size: 1-64 UNC
• Tap Type: Hand Taper
• Material: High-Speed Steel (HSS)
• Weight: 0.31 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-164-T-I