Cleveland
Cleveland C54891 Straight Flute Hand Tap 7/8"-14 Plug pneumatic accessory
Straight-flute hand tap cuts 7/8"-14 UNF threads in a plug configuration for 75 percent thread engagement
- TypeTaps
- Straight flute design clears chips efficiently in through-holes
- 7/8"-14 UNF thread size fits standard fine-pitch fasteners
- Plug chamfer starts threads easily in existing holes
- High-speed steel construction resists wear during repeated use
- Bright uncoated finish suits general-purpose tapping applications
Cleveland C54891 Straight Flute Hand Tap
The Cleveland C54891 is a straight flute hand tap designed for creating internal threads. It is made from high speed steel with a bright uncoated finish. This tool suits machinists and maintenance technicians who need to cut precise UNF threads in a variety of materials.
Suited for right-hand UNF threading in through
This tap suits users cutting 7/8"-14 UNF threads with a 2B class of fit and H4 thread limit. It is not for left-hand thread applications. It is also not for users who require a coated tool for extended life in abrasive or high-temperature alloys.
7/8"-14 UNF thread size with plug chamfer
The defining specification is the 7/8"-14 UNF thread size combined with a plug chamfer style. This determines the thread profile and starting capability for the workpiece. The high speed steel construction and H4 limit support accurate 2B class fit results.
Highlights
- Straight flute design clears chips efficiently in through-holes
- 7/8"-14 UNF thread size fits standard fine-pitch fasteners
- Plug chamfer starts threads easily in existing holes
- High-speed steel construction resists wear during repeated use
- Bright uncoated finish suits general-purpose tapping applications
Specifications
| Brand | CLEVELAND |
|---|---|
| Type | Taps |
Questions about this item
What tap wrench size fits the 4 11/16 in overall length of this 7/8"-14 Cleveland C54891 tap?
A standard 7/8 in tap wrench with square-drive jaws matches the shank; the 4 11/16 in length gives ample leverage for hand threading.
How do I start the plug tap straight so the first threads don't cross-thread?
Use the 20.40 mm drill hole, apply cutting oil, and turn the tap one full turn forward then a quarter turn back to clear chips every few rotations.
When does the H4 thread limit on this high-speed steel tap require replacement?
Replace it when the 2 7/32 in thread length no longer cuts a clean 2B-class UNF thread or when flank wear causes oversize pitch diameter.
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