

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The OSG 1310502 is a standard pipe tap designed to cut 1/2-14 NPT internal pipe threads in metal workpieces. Built from high-speed steel with an elektraLUBE finish, this tap is engineered for durability and improved chip evacuation in production and maintenance threading operations. The four-flute geometry provides balanced cutting action and consistent thread form across a range of ferrous and non-ferrous materials. With a thread length of 1.375 inches and a shank diameter of 0.6875 inches, the 1310502 fits standard tap holders used by machinists, pipefitters, and maintenance technicians working with NPT pipe connections.
This tap is suited for threading pipe fittings, manifolds, valve bodies, and other components requiring NPT connections in plumbing, HVAC, and industrial piping systems. It is appropriate for both shop fabrication and field service applications where reliable, leak-free pipe thread engagement is required. The NPT taper thread profile ensures proper sealing when used with appropriate thread sealant or tape. Machinists and pipefitters working in residential, commercial, and light industrial settings will find this tap compatible with standard tapping equipment.
Designed as an OEM-style replacement or direct-use tap for any application requiring a 1/2-14 NPT standard pipe tap in high-speed steel with a four-flute configuration.
This tap is installed by qualified machinists or pipefitters using a calibrated tap handle or machine tapping setup. Ensure the workpiece is securely fixtured and properly center-drilled before beginning the threading operation. Apply appropriate cutting fluid to reduce heat and extend tap life. Follow applicable shop safety procedures and relevant trade codes when threading pressurized pipe system components.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!