Eagle Cutting Tool HT-15000-8-B-D Hss Hand Bottom Tap

Product Description

The EAGLE CUTTING TOOL HT-15000-8-B-D is a 1-1/2 inch diameter, 8 threads-per-inch (TPI) hand bottom tap ground from high-speed steel (HSS). Bottom taps are designed to cut threads to the very bottom of a blind hole, making them the go-to choice when full thread depth is required in a stopped bore. This tap is manufactured in the USA and is used by machinists, millwrights, pipefitters, and maintenance tradespeople working on heavy fastener applications, structural components, and large-diameter threaded connections.

The HT-15000-8-B-D is suited for manual tapping operations on large-diameter through holes and blind holes where a bottoming chamfer is required. Typical applications include fabrication shops, industrial maintenance, and field repair work involving 1-1/2 inch coarse-thread fastener sizing. The 8 TPI pitch is consistent with the Unified National Coarse (UNC) standard for this diameter, used widely across heavy equipment, structural steel, and general industrial fastening.

Key Features

• Bottom (plug-to-bottom) chamfer grinds threads to the base of blind holes
• High-speed steel (HSS) construction for durability across ferrous and non-ferrous materials
• 1-1/2 inch diameter, 8 TPI UNC thread form
• USA manufactured for dimensional accuracy and consistent thread quality
• Designed for hand tapping with a tap wrench or appropriate driver

Compatibility

Designed as a hand bottom tap for 1-1/2 inch 8 TPI UNC threaded holes in general industrial, fabrication, and maintenance applications. Verify workpiece material and pre-drill hole size before use.

Installation Notes

This tap is installed by hand using a tap wrench sized for the shank diameter. Secure the workpiece firmly before beginning. Apply cutting fluid appropriate for the workpiece material to reduce friction and extend tap life. Back off the tap periodically to break chips and prevent binding, especially in deep or blind holes.

Technical Specifications

• Thread Size: 1-1/2 inches
• Threads Per Inch (TPI): 8
• Thread Standard: UNC (Unified National Coarse)
• Tap Type: Hand Bottom Tap
• Material: High-Speed Steel (HSS)
• Country of Origin: USA
• Weight: 1.78 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-15000-8-B-D