Eagle Cutting Tool HT-6250-18-B-I 5/8-18 Hss Bottom Tap

Product Description

The EAGLE CUTTING TOOL HT-6250-18-B-I is a 5/8-18 high-speed steel (HSS) hand bottom tap designed for cutting threads to the bottom of a blind hole. The bottom chamfer configuration allows threading closer to the base of a bore than taper or plug taps permit, making it the right tool for applications where thread engagement depth is critical. At 0.31 pounds, this is a lightweight, single-piece hand tap suited for use in a tap handle or tap wrench by machinists, maintenance technicians, plumbers, and pipefitters working with 5/8-18 UNF threads.

This tap is intended for hand-threading operations in materials where a fine unified thread form is required. The 5/8-18 UNF designation indicates a 5/8-inch nominal diameter with 18 threads per inch, a fine-pitch series commonly found in hydraulic fittings, precision mechanical assemblies, and certain plumbing and HVAC hardware. It is appropriate for use in ferrous and non-ferrous metals when paired with the correct cutting fluid. Import-grade tooling at this specification is widely used for maintenance, repair, and operations (MRO) tasks where high production volume is not the primary requirement.

Key Features

• Bottom chamfer design threads to the base of blind holes
• 5/8-18 UNF thread specification for fine-pitch applications
• High-speed steel (HSS) construction for durability across ferrous and non-ferrous materials
• Hand tap configuration for use with a standard tap wrench or tap handle
• Lightweight at 0.31 pounds for easy handling

Compatibility

Designed as an OEM-style replacement or standard hand tap for use in any application requiring 5/8-18 UNF bottom-tapped threads in a blind or through-hole.

Installation Notes

This tap is installed by a machinist or maintenance technician using a tap handle or adjustable tap wrench. Always apply appropriate cutting fluid for the material being threaded to reduce friction and extend tap life. Ensure the hole is drilled to the correct tap drill size before threading. Never force or back-drive a bottom tap without clearing chips, as this can cause tap breakage and damage to the workpiece.

Technical Specifications

• Thread Size: 5/8-18 UNF
• Tap Type: Hand Bottom Tap
• Material: High-Speed Steel (HSS)
• Weight: 0.31 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-6250-18-B-I