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Cleveland C58581 spiral flute tap, bright uncoated steel, three flutes, plug style

Cleveland

Cleveland C58581 Spiral Flute Tap 3/8-16 UNC 3 Flute

SKU CH-SMYQ-N8WN2

A spiral-flute tap that cuts 3/8-16 UNC threads in through-holes with three flutes and a plug chamfer

  • Product 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.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $18.99
Cheaper than about 66% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

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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