Eagle Cutting Tool HT-5625-18-T-D 9/16-18 Hss Taper Tap

Product Description

The EAGLE CUTTING TOOL HT-5625-18-T-D is a hand taper tap ground from high-speed steel (HSS) and manufactured in the USA. It cuts 9/16-18 UNF threads, meaning a 9/16-inch nominal diameter with 18 threads per inch on a Unified Fine pitch. The taper style provides a gradual thread lead that makes it well suited for starting threads cleanly in through-holes and blind holes with adequate depth. Machinists, pipefitters, and maintenance technicians reach for taper taps when cutting new threads by hand in metal workpieces where controlled, progressive engagement is needed.

This tap is used across general manufacturing, MRO maintenance, plumbing rough-in work, and equipment repair wherever a 9/16-18 UNF threaded connection is required. It performs in ferrous and non-ferrous metals including mild steel, aluminum, and brass. The hand-tap designation means it is intended for use with a tap wrench rather than a machine holder, making it practical for field service and bench work applications where a threading machine is not available.

Key Features

• 9/16-18 UNF thread form for fine-pitch thread cutting
• Taper chamfer provides gradual lead-in for easier thread starting
• High-speed steel construction provides hardness and wear resistance
• USA manufactured for consistent dimensional accuracy
• Hand-tap design compatible with standard tap wrenches

Compatibility

Designed as a hand taper tap for cutting 9/16-18 UNF threads in through-holes and blind holes with sufficient depth to accommodate the taper lead.

Installation Notes

A licensed machinist or experienced maintenance technician should perform thread-cutting operations. Secure the workpiece firmly before tapping, and use an appropriate cutting fluid to reduce friction and extend tap life. Apply steady, controlled torque with a tap wrench, backing off periodically to break chips. Never force a tap against resistance, as HSS taps are brittle and will break under side loading or excessive torque.

Technical Specifications

• Thread Size: 9/16-18 UNF
• Tap Type: Hand Taper
• Material: High-Speed Steel (HSS)
• Country of Origin: USA
• Weight: 0.32 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-5625-18-T-D