Cleveland
Cleveland C57193 Spiral Point Tap Plug 3 Flutes 7/16-14 UNC
A 7/16‑14 UNC spiral-point tap with three flutes, high-speed steel construction and a bright finish for through-hole threading
- Cuts threads efficiently with spiral-point design
- Three flutes clear chips for smoother tapping
- High-speed steel construction resists wear
- Right-hand UNC 7/16-14 thread fits standard holes
- Bright uncoated finish suits general-purpose use
Cleveland C57193 Spiral Point Tap
The Cleveland C57193 is a spiral point tap designed for creating internal threads in through-hole applications. It targets machinists and maintenance technicians who require reliable thread production in steel and similar materials. The plug chamfer style supports general-purpose threading tasks where a bottoming tap is not required.
UNC Thread Standard Constraints
This tap conforms to the Unified National Coarse standard with a 7/16-14 thread specification and a 2B-3B class of fit. The H5 thread limit defines the tolerance zone for the produced threads, limiting use to holes matching this allowance. The 75 percent thread drill size U indicates the specific tap drill required before threading. The right-hand cutting direction restricts operation to standard clockwise rotation only.
Upgrade From Basic Taps
The high-speed steel construction with a bright uncoated finish replaces standard carbon steel taps where higher cutting speeds and longer tool life are needed. The three-flute spiral point design pushes chips ahead of the cut, improving evacuation compared to straight-flute hand taps in through holes. The jump is worth it when thread quality and reduced tap breakage outweigh the higher initial cost of high-speed steel tooling.
Highlights
- Cuts threads efficiently with spiral-point design
- Three flutes clear chips for smoother tapping
- High-speed steel construction resists wear
- Right-hand UNC 7/16-14 thread fits standard holes
- Bright uncoated finish suits general-purpose use
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
Should I choose the 3-flute version or a different flute count for this 7/16-14 UNC tap?
The 3-flute design on this spiral point tap balances chip clearance and strength for through-hole threading in most materials.
What does the H5 thread limit mean when I cut threads with this tap?
H5 sets the pitch diameter tolerance for a 2B-3B class of fit, giving a standard precision internal thread on a 7/16-14 UNC size.
How does the spiral point geometry affect chip flow on a 7/16-14 UNC hole?
The spiral point pushes chips ahead of the tap in through holes, reducing packing and torque on this 3-flute high speed steel tool.
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