Cleveland C64111 Pipe Tap 1/2-14 Nptf 4 Flute Hss

Product Description

The CLEVELAND C64111 is an interrupted thread pipe tap designed for cutting 1/2-14 NPTF tapered pipe threads in metallic workpieces. Built from high speed steel with a bright finish, it features 4 flutes and an interrupted thread geometry that improves chip evacuation and reduces torque buildup in difficult materials. The plug chamfer provides a balanced entry angle suited for through-hole applications. Overall length is 3.125 inches with a 1.375-inch thread length and a 0.6875-inch shank diameter. This tap is installed by machinists, pipefitters, and maintenance technicians threading ports and fittings in ferrous components.

The C64111 is rated for use in alloy tool steel and carbon steel. It is well suited for threading pipe ports in manifolds, valve bodies, fittings, and hydraulic or pneumatic components where a leak-free NPTF seal is required. The interrupted thread design is particularly effective when tapping blind or semi-blind holes where chip packing is a concern. Typical applications include production machining, maintenance repair, and field fabrication where standard pipe thread engagement is needed.

Key Features

• Interrupted thread geometry reduces torque and improves chip clearing in steel
• 4-flute design for balanced cutting action and thread accuracy
• Plug chamfer for controlled entry in through-hole and accessible blind-hole tapping
• High speed steel construction for durability in alloy and carbon steel applications
• Bright finish for easy visual inspection of tool condition
• 0.515-inch square drive size compatible with standard tap wrenches and machine holders

Compatibility

Designed for cutting 1/2-14 NPTF tapered pipe threads in alloy tool steel and carbon steel workpieces. Compatible with standard tap wrenches and CNC or manual tapping heads accepting a 0.6875-inch shank diameter.

Installation Notes

This tap is installed by qualified machinists or pipefitters using a calibrated tap wrench, tapping head, or CNC spindle. Secure the workpiece fully before tapping and use an appropriate cutting fluid for the material being threaded. Apply steady, even pressure and back off periodically to break chips, especially in deeper holes. Inspect the tap for wear or chipping before each use and replace if thread form shows degradation.