Cleveland
Cleveland C64111 Pipe Tap 1/2"-14 Semi-Bottoming 5 Flutes NPTF
Cuts 1/2"-14 NPTF threads with a 5-flute semi-bottoming design in high-speed steel
- TypeTaps
- Cuts clean NPTF threads with 5-flute design
- Semi-bottoming chamfer starts threads easily in blind holes
- High-speed steel body resists wear on steel pipe
- 1/2"-14 size matches standard conduit and pipe fittings
- 75 % thread depth with .7031 in drill size ensures proper engagement
Cleveland C64111 Pipe Tap
The Cleveland C64111 is a high-speed steel pipe tap designed for cutting NPTF threads in pipe and conduit. It suits maintenance technicians and fabricators who need reliable internal threading for 1/2 inch nominal pipe sizes. The semi-bottoming chamfer allows threading close to the bottom of blind holes. Five flutes provide balanced chip evacuation during the cutting process.
Build Quality and Mounting
The tap body is constructed from high-speed steel with a bright uncoated finish for general-purpose use. A right-hand thread orientation matches standard piping conventions. The overall length measures 3 1/8 inches with a thread length of 1 3/8 inches, providing reach for typical coupling depths. Five flutes distribute cutting forces evenly across the tool face. The 75 percent thread drill size of .7031 inches prepares the correct hole diameter for NPTF engagement.
Thermals Noise and Power
Cutting performance depends on appropriate lubrication and speed selection to manage heat at the cutting edges. High-speed steel retains hardness at elevated temperatures generated during threading operations. Hand or machine tapping produces minimal vibration when the tap is aligned correctly with the drilled hole. Power draw is determined by the driving tool and the workpiece material being threaded. Proper chip clearance through the five flutes reduces torque spikes and tool wear.
Highlights
- Cuts clean NPTF threads with 5-flute design
- Semi-bottoming chamfer starts threads easily in blind holes
- High-speed steel body resists wear on steel pipe
- 1/2"-14 size matches standard conduit and pipe fittings
- 75 % thread depth with .7031 in drill size ensures proper engagement
Specifications
| Brand | CLEVELAND |
|---|---|
| Type | Taps |
Questions about this item
What thread standard does the 1/2"-14 NPTF tap cut?
The tap cuts National Pipe Taper Fuel (NPTF) threads, which are dryseal pipe threads designed to seal without sealant when mated with matching NPTF fittings.
What drill size produces a 75 percent thread for this tap?
A 0.7031 in drill is specified for a 75 percent thread depth before tapping the 1/2"-14 NPTF hole.
How do you start the semi-bottoming tap correctly in a blind hole?
Use a taper or plug tap first to start the threads, then switch to the semi-bottoming tap to cut closer to the bottom of the blind hole.
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