Eagle Cutting Tool HT-3750-16-T-D 3/8-16 Hss Taper Tap

Product Description

The EAGLE CUTTING TOOL HT-3750-16-T-D is a 3/8-16 high-speed steel (HSS) hand taper tap designed to cut internal threads in a wide range of materials. The taper lead progressively distributes cutting load across several threads, making thread starting easier and reducing tool breakage risk. With a 4-flute geometry and H-3 tolerance class, this tap produces accurate, consistent threads suited to general-purpose fastener engagement. Manufactured in the USA, it is a standard choice for machinists, maintenance technicians, pipefitters, and plumbers performing threaded-hole work on metal components.

This tap is suited for threading operations on ferrous and non-ferrous metals in maintenance, repair, and manufacturing environments. The 3/8-16 UNC thread form is one of the most common unified coarse thread sizes, used extensively in structural assemblies, equipment frames, and mechanical fittings. The taper style is typically used for starting a thread in a blind or through hole, particularly when hand-tapping with a T-handle or tap wrench.

Key Features

• 3/8-16 UNC thread form for compatibility with standard unified coarse fastener sizes
• High-speed steel (HSS) construction provides hardness and wear resistance across a broad material range
• Taper lead distributes cutting load gradually, reducing breakage during thread starting
• 4-flute design promotes chip evacuation and thread accuracy
• H-3 tolerance class delivers controlled thread fit for general mechanical applications
• Made in the USA to consistent dimensional standards

Compatibility

Designed as a standard hand taper tap for use in any application requiring 3/8-16 UNC internal threads in metal or compatible materials using a tap wrench or T-handle driver.

Installation Notes

Hand taps should be installed by qualified machinists or trade professionals familiar with threading operations. Always use appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. Ensure the hole is drilled to the correct tap drill diameter before tapping, and periodically reverse the tap to break chips and prevent binding. Follow applicable shop safety practices and secure the workpiece before beginning thread-cutting operations.

Technical Specifications

• Thread Size: 3/8-16 UNC
• Tap Type: Hand Taper
• Number of Flutes: 4
• Tolerance Class: H-3
• Material: High-Speed Steel (HSS)
• Country of Origin: USA
• Weight: 0.32 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-3750-16-T-D