Cleveland
Cleveland C54887 Straight Flute Hand Tap 7/8"-9UNC pneumatic accessory
A three-piece straight-flute tap set cuts 7/8"-9 UNC threads in high-speed steel with a bright finish
- TypeTaps
- 7/8"-9 UNC thread size for precise tapping
- High-speed steel construction resists wear during use
- Bright uncoated finish suits general-purpose applications
- Four flutes improve chip clearance in blind holes
- Three-piece kit provides taper, plug and bottoming taps
Three-Piece Tap Kit for UNC Threads
This Cleveland C54887 kit provides three straight-flute hand taps for cutting 7/8"-9 UNC internal threads. The high-speed steel construction is bright and uncoated. Designed for right-hand thread direction, the set suits general-purpose threading tasks in maintenance or fabrication workshops.
Build Quality and Daily Use
Four flutes per tap give a balanced cutting action and help clear chips in through-holes or blind holes. The H4 thread limit targets a class 3B fit, while the 75 percent thread drill size of 19.50 mm guides hole preparation. Overall length of 4 11/16 in and thread length of 2 7/32 in allow access in typical hand-tapping setups.
Upgrade Path and When to Switch
The kit replaces worn or undersized taps that no longer hold a 3B tolerance. Moving to this set is worth it when existing tools produce loose threads or struggle with the 7/8"-9 UNC size. It is not suited for buyers who need machine-tapping geometries, coated tooling for abrasive alloys, or larger thread diameters.
Highlights
- 7/8"-9 UNC thread size for precise tapping
- High-speed steel construction resists wear during use
- Bright uncoated finish suits general-purpose applications
- Four flutes improve chip clearance in blind holes
- Three-piece kit provides taper, plug and bottoming taps
Specifications
| Brand | CLEVELAND |
|---|---|
| Type | Taps |
Questions about this item
What thread standard does the 7/8"-9UNC tap follow, and what class of fit does it produce?
The tap follows the UNC thread standard and produces a Class 3B fit for right-hand threads.
What are the overall length and thread length of this tap?
The overall length is 4 11/16 in and the thread length is 2 7/32 in.
Which drill size creates the recommended 75 percent thread engagement for this tap?
Use a 19.50 mm drill size to achieve 75 percent thread engagement before tapping.
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