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Cleveland C55326 spiral point tap plug, three flutes, gold TiN finish

Cleveland

Cleveland C55326 Spiral Point Tap Plug 3 Flutes 3/8-24 UNF

SKU CH-SQYY-GA4SR

Cuts 3/8-24 UNF threads with a TiN-coated high-speed steel spiral-point plug tap featuring three flutes and an H3 thread limit

  • Precise UNF threading with 3/8-24 pitch
  • Faster chip evacuation via spiral point design
  • Extended tool life from TiN-coated high-speed steel
  • Accurate 2B class fit for reliable assemblies
  • Three-flute geometry balances strength and cutting speed

Cleveland C55326 Spiral Point Tap

The Cleveland C55326 is a spiral point tap designed for creating internal UNF threads in through-hole applications. It suits machinists and maintenance technicians who need reliable thread cutting in metal components. The plug chamfer allows easier starting in existing holes or at the beginning of a cut.

3/8-24 UNF thread capacity

This tap cuts a 3/8 inch diameter thread with 24 threads per inch in a Unified National Fine pitch. The 75 percent thread drill size is 8.50 mm, providing a specific hole target for standard engagement. The H3 thread limit and 2B class of fit define the tolerance range for general-purpose fastening. Thread length reaches 1 1/4 inches within an overall length of 2 15/16 inches.

Three-flute high-speed steel with TiN coating

Three flutes balance chip evacuation and tool rigidity during the tapping process. High-speed steel construction withstands the cutting forces encountered in steel and alloy workpieces. A titanium nitride coating reduces friction and extends tool life compared to uncoated alternatives. Right-hand cutting direction matches standard threading requirements.

How it compares

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

Price $12.99
Cheaper than about 82% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND

Questions about this item

Will the 3/8-24 UNF spiral point tap fit the existing 8.50 mm drill holes in my older fixture plates?

Yes, the tap is designed for a 75 percent thread drill size of 8.50 mm, matching those existing holes.

How can I verify the 3-flute H3 tap is cutting a correct 2B class internal thread during use?

Check that chips eject forward through the flutes and gauge the finished thread with a 3/8-24 UNF 2B thread plug gauge.

Does the TiN-coated high-speed steel tap come with a handle or wrench in the box?

The package contains only the C55326 spiral point tap; a compatible tap wrench or T-handle must be purchased separately.

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