Cleveland
Cleveland C54539 Straight Flute Hand Tap M8-1.25 pneumatic accessory
M8-1.25 straight-flute hand tap in high-speed steel, bright finish, four flutes, right-hand thread, class 6H fit
- TypeTaps
- M8-1.25 metric thread cuts cleanly with high-speed steel
- Four-flute design clears chips efficiently for smoother tapping
- Bright uncoated finish resists galling on steel and aluminium
- 75 percent thread drill size H ensures precise hole preparation
- D5 thread limit meets class 6H fit for reliable assemblies
Straight Flute Hand Tap M8-1.25
The Cleveland C54539 is a three-piece tap kit designed for cutting M8 x 1.25 metric threads in a range of ferrous and non-ferrous materials. It suits maintenance technicians, toolroom machinists and automotive specialists who need reliable hand-tapping capability for repair or short-run production work. The set provides taper, plug and bottoming taps to start, continue and finish threads in through or blind holes.
High-Speed Steel Construction
Manufactured from bright-finish high-speed steel, the taps resist wear and maintain cutting edges during manual operation without coolant pressure or forced feed. The uncoated surface allows easy visual inspection of flank wear and simplifies resharpening when required. Four straight flutes provide adequate chip clearance for the 1 1/8 inch thread length, reducing torque spikes and the risk of tap breakage in typical workshop materials.
D5 Limit and 6H Fit
The D5 thread limit and Class 6H tolerance produce a standard metric fit compatible with common M8 hardware, while the 75 percent thread drill size H ensures consistent engagement. Right-hand cutting direction matches the vast majority of fastener applications. The 2 23/32 inch overall length fits standard tap wrenches and T-handles, so no special holders are needed for day-to-day use.
Highlights
- M8-1.25 metric thread cuts cleanly with high-speed steel
- Four-flute design clears chips efficiently for smoother tapping
- Bright uncoated finish resists galling on steel and aluminium
- 75 percent thread drill size H ensures precise hole preparation
- D5 thread limit meets class 6H fit for reliable assemblies
Specifications
| Brand | CLEVELAND |
|---|---|
| Type | Taps |
Questions about this item
How do I install the M8-1.25 hand tap correctly, and what step do people often miss?
Use the 75 percent thread drill size H to create the hole, then run the straight-flute tap by hand with steady pressure; the step many skip is clearing chips every few turns to avoid binding in the 1 1/8 in thread length.
What maintenance or replacement will the three-piece M8-1.25 tap kit need over time?
The high-speed steel taps stay sharp for many holes, but once the four flutes show wear or the D5 thread limit no longer produces a 6H class of fit, replace the dull tap rather than re-sharpening it.
What limit appears first when tapping M8-1.25 holes continuously with this uncoated tool?
Heat buildup in the bright high-speed steel causes the cutting edges to lose hardness faster than coated taps, so the practical limit is the number of holes you can cut before the flutes dull and thread quality drops below 6H.
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