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Spiral flute tap #10-24 bottoming 2 flutes UNJC high speed steel

Widia Gtd

Widia Gtd VTSFT-TC5143 Spiral Flute Tap #10-24 Bottoming 2 Flutes UNJC

SKU CH-DNE1-VCBNE

Spiral-flute tap cuts #10-24 UNJC threads to a 2 11/32 inch depth with two flutes in high-speed steel

  • Spiral flutes clear chips in blind holes
  • Bottoming chamfer threads to the hole base
  • #10-24 UNJC fits aerospace-class threads
  • Two flutes balance strength and chip space
  • High-speed steel resists wear in tough alloys

Spiral Flute Tap #10-24 UNJC

The Widia Gtd VTSFT-TC5143 is a high-speed steel spiral flute tap designed for #10-24 UNJC threads. It features a bottoming chamfer with two flutes and an overall length of 2 11/32 in. The thread limit is H5 with a class of fit 2B for right-hand threads.

For internal threading in blind holes.

This tap suits machinists cutting #10-24 UNJC threads in blind holes where chip evacuation upwards is required. The bottoming design allows threading close to the bottom. It is not for through-hole applications or metric thread sizes.

Bottoming chamfer with H5 thread limit

The bottoming chamfer and H5 thread limit define the engagement depth and tolerance for the #10-24 UNJC thread. These specifications determine compatibility with the required class of fit 2B and the 75 percent thread drill size #25.

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 nameWIDIA

Questions about this item

What size drill bit matches the 75 percent thread drill size #25 for this #10-24 tap?

Use a #25 drill bit to achieve the recommended 75 percent thread depth before tapping the #10-24 UNJC hole.

How do I avoid breaking the two flutes when starting the bottoming tap in a blind hole?

Start the tap straight, use cutting fluid, and advance one turn then reverse half a turn to clear chips from the two spiral flutes.

When should I replace this high-speed steel tap after repeated #10-24 threading jobs?

Replace the tap when the cutting edges on the two flutes show visible wear or when threads begin to measure out of the 2B class of fit.

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