Hertel G127360-S Pipe Tap 3/8-18 Npt 4 Flute Hss

Product Description

The HERTEL G127360-S is a standard pipe tap designed to cut 3/8-18 NPT internal pipe threads in metal workpieces. It features 4 flutes ground from high speed steel (HSS) with a bright, uncoated finish, delivering consistent thread form across a wide range of ferrous and non-ferrous materials. With an overall length (OAL) of 2-9/16 inches, this tap is sized for general-purpose pipe thread work in shop, field, and maintenance environments. Machinists, pipefitters, plumbers, and HVAC technicians reach for this tap when threading ports, fittings, and manifolds that require a standard NPT taper thread profile.

This tap is suited for threading pipe-connection ports in plumbing, HVAC, and light industrial applications where 3/8-18 NPT threads are the standard. Typical use cases include tapping threaded ports on valve bodies, manifold blocks, pressure vessel fittings, and pipe nipple connections. The regular hook geometry and uncoated HSS construction make it a reliable general-purpose choice for low-to-moderate production runs as well as one-off maintenance tapping jobs.

Key Features

• 3/8-18 NPT taper thread form for standard pipe fitting connections
• 4-flute design promotes chip clearance and thread accuracy
• High speed steel construction provides durability across ferrous and non-ferrous workpieces
• Bright, uncoated finish for general-purpose use without specialized coating requirements
• Overall length of 2-9/16 inches suits bench, drill press, and hand-tapping applications
• Regular hook geometry for balanced cutting performance in a wide range of materials

Compatibility

Designed as a general-purpose pipe tap for creating 3/8-18 NPT internal threads in materials compatible with high speed steel tooling.

Installation Notes

Pipe tapping should be performed by a qualified machinist, pipefitter, or HVAC technician using the appropriate tap wrench or tapping fixture. Always use a suitable cutting fluid to extend tool life and improve thread finish. Ensure the workpiece is securely clamped before beginning and align the tap square to the bore to prevent cross-threading or tap breakage. Follow applicable plumbing and HVAC codes when threading ports that will carry pressurized fluid or gas.