Hertel G837555-S Pipe Tap 1/8-27 Npt 4 Flutes Hss

Product Description

The HERTEL G837555-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 tap produces accurate pipe threads used in fluid and gas line fittings across plumbing, HVAC, and mechanical piping applications. The short projection design keeps the tap compact and stable during threading operations. With 4 flutes and a 0.75-inch thread length, it delivers clean chip evacuation and consistent thread form in through and blind-hole applications. Machinists, pipefitters, and service technicians rely on this tap for tapping pipe fittings, manifolds, and threaded ports in a wide range of ferrous and non-ferrous materials.

This tap is suited for use in residential and light commercial trade applications where NPT pipe threads are required. Common install scenarios include threading ports on HVAC equipment, plumbing fittings, compressed air components, and hydraulic manifolds. The 1/8-27 NPT thread size is one of the most common pipe thread sizes in North American trade work, used on pressure gauges, sensors, drain plugs, and small-diameter pipe connections throughout mechanical systems.

Key Features

• 1/8-27 NPT thread size for standard tapered pipe thread applications
• High speed steel construction for durability across a range of materials
• Bright, uncoated finish suitable for general-purpose threading operations
• 4-flute design promotes efficient chip evacuation and thread quality
• Short projection tap type for compact, stable threading in tight spaces
• 0.75-inch thread length accommodates typical pipe thread engagement depth

Compatibility

Designed for general-purpose NPT pipe thread tapping in applications requiring a 1/8-27 thread standard. Suitable for use with standard tap handles and tapping heads that accept a 0.4375-inch shank diameter.

Installation Notes

This tap is installed by machinists or pipefitters using a tap handle, tap wrench, or machine tapping head appropriate for the shank diameter. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct NPT tap drill size before threading. Apply appropriate cutting fluid to extend tap life and improve thread finish. Inspect the tap for wear or chipping before each use to avoid thread damage or tap breakage.