Cleveland
Cleveland C57179 Spiral Point Tap 3/8-24 UNF 3 Flutes HSS
Creates precise UNF threads in through-holes using a three-flute high-speed steel spiral point design
- Spiral point pushes chips ahead for smoother threading
- 3/8-24 UNF thread size fits standard fine-pitch applications
- Three-flute design balances chip clearance and cutting strength
- High-speed steel construction resists wear in general-purpose use
- Bright uncoated finish suits low-alloy steel and non-ferrous materials
Cleveland C57179 Spiral Point Tap
This spiral point tap cuts 3/8-24 UNF threads in through-holes. The 3-flute high-speed steel body pushes chips ahead of the cut for smoother tapping. Right-hand threads suit standard fasteners. Bright finish runs uncooled in many materials.
Check thread size and drill diameter
Verify the workpiece requires 3/8-24 UNF Class 2B threads before ordering. Use the specified 8.50 mm drill for the 75 percent thread engagement. Confirm the 1 1/4 in thread length reaches full depth. Ensure your tap holder accepts the shank.
Uncoated bright finish ships ready to use
The bright surface needs no coating removal before first use. Three flutes provide standard chip clearance for general-purpose work. H1 thread limit matches the stated Class 2B fit. No additional accessories or lubricants are included.
Highlights
- Spiral point pushes chips ahead for smoother threading
- 3/8-24 UNF thread size fits standard fine-pitch applications
- Three-flute design balances chip clearance and cutting strength
- High-speed steel construction resists wear in general-purpose use
- Bright uncoated finish suits low-alloy steel and non-ferrous materials
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
What comes in the box and do I need a separate handle or holder for the C57179 tap?
The box contains the spiral point tap itself. A tap wrench or compatible holder must be purchased separately to drive the tool.
Should I choose a different thread limit or flute count for a 3/8-24 UNF hole?
This tap is manufactured with an H1 thread limit and three flutes, which suits a standard 2B class of fit for 3/8-24 UNF threads.
What does the 75 percent thread drill size of 8.50 mm mean when I am cutting threads?
Drill the hole to 8.50 mm before tapping; this produces roughly 75 percent thread engagement for a strong 3/8-24 UNF internal thread.
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