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Gold-coloured spiral-point tap plug with three flutes and shank

Greenfield Threading

Greenfield Threading Spiral Point Tap Plug 280207 #10-24 UNC 3 Flutes High Speed Steel TiN

SKU CH-VBQV-RTWH0

Spiral point tap cuts #10-24 UNC threads in through-holes using three flutes and TiN-coated high-speed steel

  • #10-24 UNC thread fits standard fasteners
  • Spiral-point design pushes chips ahead for through-holes
  • TiN coating on high-speed steel resists wear
  • Three flutes balance strength and chip clearance
  • H3 limit with 2B class ensures consistent fit

Spiral Point Tap #10-24 UNC

This spiral point tap cuts internal threads in through-holes using a #10-24 UNC thread form. It is made from high speed steel with a TiN coating for wear resistance. The plug chamfer and three-flute design push chips ahead of the cutting edges. The tap suits maintenance and production threading tasks.

For machine tapping of through-holes

The spiral point geometry is intended for through-hole work where chips can escape forward. It is not suited for blind holes where chips must be lifted out. Users needing a bottoming or taper chamfer should select a different tap style. The H3 limit and 2B class of fit match standard Unified coarse thread requirements.

TiN coating extends tool life

The titanium nitride surface reduces friction and heat during cutting. This helps maintain sharp edges longer on steel and non-ferrous materials. The 75 percent thread drill size #25 prepares the correct hole for 2B engagement. No additional accessories or software are included with the tap.

How it compares

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

Price $7.99
Cheaper than about 91% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE

Questions about this item

What drill size do I need to prepare the hole before using this #10-24 UNC spiral point tap?

Use a #25 drill to create the 75 percent thread hole before tapping with this tool.

Will the TiN coating on this 3-flute tap hold up when I run it in a manual tap wrench instead of a powered spindle?

The TiN coating on the high-speed steel flutes reduces friction and wear whether the tap is driven by hand or by machine.

How can I confirm the threads I cut with this H3 limit tap meet the 2B class of fit?

Check the finished threads with a #10-24 UNC 2B go/no-go gauge; the go member should pass and the no-go member should stop within three turns.

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