Hertel R859562-S Npt Pipe Tap 1/8-27 4 Flute Hss

Product Description

The HERTEL R859562-S is a standard NPT pipe tap designed for cutting 1/8-27 tapered pipe threads in metal workpieces. Built from high-speed steel with a bright, uncoated finish, this 4-flute tap delivers clean thread formation in a short-projection configuration. The 3/4-inch thread length and 0.3125-inch shank diameter make it compatible with standard tap holders and machines used in production and maintenance environments. Machinists, pipefitters, and maintenance technicians use this tap when threading pipe ports, fittings, and manifold bosses to NPT standard. At 0.06 pounds, it is a lightweight, single-piece tooling item suited for both bench and machine use.

This tap is used wherever a 1/8-27 NPT internal pipe thread is required, including hydraulic and pneumatic manifolds, pipe fittings, instrument ports, and fluid-system components. The short-projection design suits applications where clearance is limited. It is appropriate for use in ferrous and non-ferrous metals when used with proper cutting fluid. Suitable for job shop, maintenance, and light production applications in plumbing, HVAC, and industrial piping work.

Key Features

• 1/8-27 NPT thread standard for tapered pipe thread applications
• High-speed steel construction for durability across common metal workpieces
• 4-flute design promotes clean chip evacuation and consistent thread form
• Short-projection tap type for use in confined or close-clearance setups
• Bright, uncoated finish suitable for use with standard cutting fluids
• 0.3125-inch shank diameter fits standard tap holders and chucks

Compatibility

Designed for cutting 1/8-27 NPT internal tapered pipe threads in standard tap holders accepting a 0.3125-inch shank diameter.

Installation Notes

This tap is installed and operated by machinists or pipefitters using a standard tap wrench, tapping head, or CNC tap holder. Always apply an appropriate cutting fluid for the workpiece material before and during tapping to reduce tool wear and improve thread quality. Ensure the tap is properly aligned perpendicular to the workpiece before starting the cut to avoid thread damage or tap breakage. Follow applicable shop safety practices and workpiece fixturing requirements when operating tapping equipment.