We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Bright steel spiral-point tap with three straight flutes and square drive end

Cleveland

Cleveland C57179 Spiral Point Tap 3/8-24 UNF 3 Flutes HSS

SKU CH-W9NS-4FQWX

Creates precise UNF threads in through-holes using a three-flute high-speed steel spiral point design

  • Spiral point pushes chips ahead for smoother threading
  • 3/8-24 UNF thread size fits standard fine-pitch applications
  • Three-flute design balances chip clearance and cutting strength
  • High-speed steel construction resists wear in general-purpose use
  • Bright uncoated finish suits low-alloy steel and non-ferrous materials

Cleveland C57179 Spiral Point Tap

This spiral point tap cuts 3/8-24 UNF threads in through-holes. The 3-flute high-speed steel body pushes chips ahead of the cut for smoother tapping. Right-hand threads suit standard fasteners. Bright finish runs uncooled in many materials.

Check thread size and drill diameter

Verify the workpiece requires 3/8-24 UNF Class 2B threads before ordering. Use the specified 8.50 mm drill for the 75 percent thread engagement. Confirm the 1 1/4 in thread length reaches full depth. Ensure your tap holder accepts the shank.

Uncoated bright finish ships ready to use

The bright surface needs no coating removal before first use. Three flutes provide standard chip clearance for general-purpose work. H1 thread limit matches the stated Class 2B fit. No additional accessories or lubricants are included.

How it compares

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

Price $10.99
Cheaper than about 86% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND

Questions about this item

What comes in the box and do I need a separate handle or holder for the C57179 tap?

The box contains the spiral point tap itself. A tap wrench or compatible holder must be purchased separately to drive the tool.

Should I choose a different thread limit or flute count for a 3/8-24 UNF hole?

This tap is manufactured with an H1 thread limit and three flutes, which suits a standard 2B class of fit for 3/8-24 UNF threads.

What does the 75 percent thread drill size of 8.50 mm mean when I am cutting threads?

Drill the hole to 8.50 mm before tapping; this produces roughly 75 percent thread engagement for a strong 3/8-24 UNF internal thread.

More in Bits, Hole Saws & Accessory Kits

Similar items