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
Cleveland spiral flute tap, bright uncoated steel, three flutes, 3/8-24 UNF thread

Cleveland

Cleveland C58583 Spiral Flute Tap 3/8-24 UNF 3 Flutes Bright

SKU CH-QZMN-JQC2S

Spiral flute tap cuts 3/8"-24 UNF threads in blind holes with three flutes for chip evacuation

  • Product typeTaps
  • Spiral flutes clear chips in blind holes
  • 3/8"-24 UNF thread fits standard fine-pitch fasteners
  • Three-flute design balances strength and chip space
  • High-speed steel resists wear in general-purpose tapping
  • Bright finish suits non-ferrous and low-carbon steels

Thread-cutting tool for UNF fasteners

The Cleveland C58583 is a spiral flute tap designed to cut 3/8"-24 UNF threads in through-holes. Its right-hand thread direction and H3 thread limit produce a 2B class of fit suitable for general-purpose fastening. Machinists and maintenance technicians use it to create internal threads in steel, aluminium and other ferrous or non-ferrous metals.

Plug-chamfer start frees chip clearance

The plug chamfer requires a drilled hole to the 75 percent thread depth using an 8.50 mm drill before tapping begins. The three-flute spiral geometry lifts chips upward and out of the hole, reducing the need to reverse the tap during deep cuts. Bright high-speed steel construction means no coating to wear away, so the tool can be resharpened multiple times.

Spiral flutes sustain cutting in long engagements

With a thread length of 3/4 in and an overall length of 2 15/16 in, the flutes maintain coolant flow and chip evacuation during extended cuts. The uncoated substrate handles sustained frictional heat without the risk of coating delamination that can occur on coated taps under heavy load. Steady feed rates and proper lubrication keep thread quality consistent across repeated operations.

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 limit applies to the 3/8-24 UNF spiral flute tap?

The tap is manufactured to an H3 thread limit for a 2B class of fit.

How much heat builds up when the tap runs continuously in steel?

High-speed steel construction dissipates heat during extended tapping, but cutting fluid is still recommended for prolonged use.

Which tap wrench or holder fits the shank of this 3/8-24 UNF tap?

The tap uses a standard square shank that fits common adjustable tap wrenches and T-handle holders for 3/8-inch taps.

More in Bits, Hole Saws & Accessory Kits

Similar items