Eagle Cutting Tool HT-8750-14-T-D 7/8-14 Hss Taper Tap

Product Description

The EAGLE CUTTING TOOL HT-8750-14-T-D is a 7/8-14 high-speed steel (HSS) hand taper tap manufactured in the USA. Taper taps feature a gradual chamfer across the first 8 to 10 threads, which distributes cutting load progressively and makes them the standard starting choice when threading a new hole from scratch. This tap cuts a 7/8-inch major diameter thread with 14 threads per inch (UNF fine thread pitch), a common specification in hydraulic fittings, automotive components, and structural fastener applications. Machinists, pipefitters, and maintenance technicians reach for hand taper taps when cutting threads by hand with a tap wrench or when beginning a threading sequence in a drill press or mill setup.

This tap is suited for threading ductile ferrous and non-ferrous materials where a fine-pitch UNF thread is required. The 7/8-14 thread size appears frequently in hydraulic system ports, brake line fittings, and precision mechanical assemblies. The hand designation indicates it is intended for manual or light machine tapping rather than high-speed CNC production tapping. USA manufacture means dimensional conformance to ASME B94.9 tap standards, which trade professionals rely on for consistent fit with standard 7/8-14 UNF nuts, couplings, and threaded inserts.

Key Features

• 7/8-14 UNF fine thread profile for hydraulic, automotive, and precision mechanical applications
• High-speed steel (HSS) construction for hardness and wear resistance across a range of common workpiece materials
• Taper chamfer on first 8 to 10 threads for progressive load distribution and easier thread starting
• Hand tap design compatible with standard tap wrenches and manual tapping fixtures
• USA manufactured to ASME B94.9 dimensional standards

Compatibility

Designed as a hand taper tap for cutting 7/8-14 UNF internal threads in compatible workpieces. No specific machine or system compatibility was provided in the product data.

Installation Notes

Secure the workpiece firmly before beginning any tapping operation and ensure the correct tap drill size for a 7/8-14 UNF thread has been used to prepare the hole. Apply cutting fluid appropriate for the workpiece material throughout the tapping process to reduce friction and extend tool life. Back the tap off a quarter to half turn periodically to break chips and prevent tap binding. Worn or broken taps can be extremely difficult to remove, so avoid applying excessive torque, especially in blind-hole applications.

Technical Specifications

• Thread Size: 7/8-14 UNF
• Material: High-Speed Steel (HSS)
• Tap Type: Hand Taper
• Country of Origin: USA
• Weight: 1.78 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-8750-14-T-D