Osg 1330201 Pipe Tap 1/8-27 Nps 4 Flute Hss

Product Description

The OSG 1330201 is a standard pipe tap designed to cut 1/8-27 NPS internal pipe threads in a range of common metals. Built from high-speed steel with an oxide finish, this tap delivers consistent thread quality in applications where a reliable pipe-thread fit is required. The 4-flute design provides balanced cutting action and adequate chip clearance for through and blind hole tapping. With a 3/4-inch thread length and an overall length of 2.126 inches, this tap fits standard tap wrenches and machine holders used in plumbing, HVAC, and general mechanical fabrication work.

This tap is suited for threading pipe fittings, valves, and manifold ports in residential and light commercial plumbing and HVAC applications. It cuts NPS straight pipe threads, which are used where a mechanical joint is made and a separate sealant or fitting provides the seal. Typical users include licensed plumbers, pipefitters, HVAC technicians, and maintenance machinists who need to chase or create fresh pipe threads in aluminum, carbon steel, or cast iron workpieces.

Key Features

• 1/8-27 NPS thread form for straight pipe thread applications
• High-speed steel construction for durability across a range of metals
• Oxide finish helps reduce friction and extend tool life
• 4 flutes for balanced cutting action and chip evacuation
• 3/4-inch thread length suits standard pipe thread depths
• Regular hook geometry for use in common manual and machine tapping setups

Compatibility

Compatible material applications include aluminum, carbon steel, cast iron, and hardened steel. Designed as a standard NPS pipe tap for use in typical pipe thread tapping operations.

Installation Notes

This tap is installed by a machinist, plumber, or HVAC technician using a standard tap wrench or tapping machine. Always secure the workpiece before tapping and apply cutting fluid appropriate to the workpiece material to improve thread quality and tool life. Back the tap out periodically to clear chips, particularly in deep holes or when working in cast iron. Follow applicable codes such as IFGC or IPC when cutting threads in pipe systems that will carry gas or pressurized fluids.