Cleveland
Cleveland C58581 Spiral Flute Tap 3/8-16 UNC 3 Flute
A spiral-flute tap that cuts 3/8-16 UNC threads in through-holes with three flutes and a plug chamfer
- TypeTaps
- Spiral flutes clear chips efficiently in blind holes
- Three-flute design balances strength and smooth cutting action
- High-speed steel construction resists wear during repeated threading
- Plug chamfer starts threads reliably in through or blind holes
- Right-hand UNC 3/8-16 threads fit standard fastener applications
Cleveland Spiral Flute Tap 3/8-16 UNC
This Cleveland spiral flute tap cuts 3/8-16 UNC threads in a single pass. The H3 thread limit and 2B class of fit suit general-purpose threading tasks. Right-hand thread direction matches standard fastener requirements. Three flutes provide balanced chip evacuation during operation.
High-speed steel construction with bright finish
High-speed steel construction resists wear when cutting ferrous and non-ferrous materials. The bright uncoated surface allows visual inspection of cutting edges. Plug chamfer style starts threads easily in through-holes and blind holes. Overall length of 2 15/16 inches fits standard tap holders and wrenches.
75 percent thread drill size 5/16 inch
A 5/16 inch drill size produces the recommended 75 percent thread engagement for this tap. Thread length of 3/4 inch determines maximum effective depth in blind holes. Verify drill size and hole depth match these specifications before threading. Incorrect preparation causes tap breakage or poor thread quality.
Highlights
- Spiral flutes clear chips efficiently in blind holes
- Three-flute design balances strength and smooth cutting action
- High-speed steel construction resists wear during repeated threading
- Plug chamfer starts threads reliably in through or blind holes
- Right-hand UNC 3/8-16 threads fit standard fastener applications
Specifications
| Brand | CLEVELAND |
|---|---|
| Type | Taps |
Questions about this item
What thread standard does the 3/8-16 tap follow?
It cuts UNC threads with a 2B class of fit and H3 thread limit.
What drill size is needed before tapping?
Use a 5/16 in drill to produce the recommended 75 percent thread engagement.
How deep can this tap cut in one pass?
The thread length is 3/4 in, so the tap cuts that deep before the shank clears the hole.
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