Osg 1330500 Pipe Tap 1/2-14 Nps 4 Flute Hss

Product Description

The OSG 1330500 is a standard pipe tap designed to cut 1/2-14 NPS (National Pipe Straight) threads in a range of metals. It features 4 flutes ground from high-speed steel with a bright, uncoated finish. The tap measures 3.126 inches in overall length with a 1.375-inch thread length, a shank diameter of 0.6875 inches, and a square drive size of 0.515 inches. Licensed plumbers, pipefitters, and machinists use this tap to thread pipe fittings, valves, and manifolds to NPS dimensional standards. The regular hook geometry provides stable cutting action in both through and blind hole applications.

This tap is suited for threading ferrous and non-ferrous metals in plumbing, HVAC, and industrial piping work. Typical applications include tapping pipe ports in manifolds, fittings, and housings where NPS straight thread connections are required. It is appropriate for both shop fabrication and field service work on pipe assemblies. The 4-flute configuration is well matched to production tapping in materials such as aluminum, carbon steel, and cast iron.

Key Features

• 1/2-14 NPS thread form for straight pipe thread connections
• 4 flutes with regular hook geometry for stable chip control
• High-speed steel construction handles aluminum, carbon steel, cast iron, and hardened steel
• Bright, uncoated finish - suitable for use with cutting fluid to extend tool life
• OSG Series 109 standard tap profile

Compatibility

Designed for cutting 1/2-14 NPS threads per the National Pipe Straight thread standard. Compatible with materials including aluminum, carbon steel, cast iron, and hardened steel.

Installation Notes

This tap is installed by a machinist, pipefitter, or licensed plumber using a tap wrench or machine spindle rated for the tap size. Secure the workpiece firmly and use appropriate cutting fluid for the material being tapped to reduce heat and extend tool life. Inspect the tap for wear or damage before each use - a dull or chipped tap can produce out-of-tolerance threads or break in the hole. Follow shop safety practices and applicable code requirements when threading pipe connections that will carry pressure or fluid.