Eagle Cutting Tool HT-15000-8-P-I Hss Hand Plug Tap

Product Description

The EAGLE CUTTING TOOL HT-15000-8-P-I is a 1-1/2 inch diameter, 8 threads-per-inch (TPI) high-speed steel (HSS) hand plug tap designed for cutting internal threads by hand. The plug chamfer geometry — typically 3 to 5 threads of chamfer — provides a balance between easy starting and thread-cutting efficiency, making it a versatile choice for through-holes and deep blind holes alike. Machined from HSS, this tap delivers the hardness and heat resistance required for threading steel, cast iron, and similar ferrous materials. Plumbers, pipefitters, HVAC technicians, and machinists reach for this tap size when threading large-diameter fittings and pipe flanges.

This tap is well suited for trade and shop applications requiring 1-1/2 inch 8 TPI threads, including threaded pipe connections, flange assemblies, heavy mechanical fittings, and structural fastener work. The hand-tap configuration means it is driven with a standard tap wrench rather than a machine tool, making it appropriate for field repair and on-site fabrication work where a drill press or CNC machine is not available. It is imported construction, making it a cost-effective option for general maintenance and repair threading tasks.

Key Features

• 1-1/2 inch diameter with 8 TPI thread pitch for large-diameter internal threading
• High-speed steel (HSS) construction provides hardness and wear resistance for ferrous materials
• Plug chamfer style balances easy thread starting with efficient cutting through the full thread depth
• Hand-tap design for use with a standard tap wrench — no machine required
• Minimum order quantity of 1 — available as a single unit

Compatibility

Designed as an OEM-style replacement and general-use hand tap for applications requiring 1-1/2 inch 8 TPI internal threads; compatible with standard tap wrenches sized for large-diameter taps.

Installation Notes

This tap is installed by a machinist, pipefitter, or qualified tradesperson using a calibrated tap wrench. Always drill a properly sized pilot hole before tapping — using the correct tap drill size is critical to achieving full thread engagement without breaking the tap. Apply cutting fluid throughout the tapping process to reduce heat and extend tool life. Back off the tap periodically to break chips, especially in deep or blind holes, to prevent binding and tool breakage.

Technical Specifications

• Thread Diameter: 1-1/2 inches
• Thread Pitch: 8 TPI
• Tap Style: Hand Plug Tap
• Material: High-Speed Steel (HSS)
• Weight: 1.8 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-15000-8-P-I