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 C59317 thread forming tap 3/8-16 UNC HSS bright finish

Cleveland

Cleveland C59317 Thread Forming Tap 3/8-16 UNC HSS Bright 0 Flutes

SKU CH-3PGK-PHG82

Forms 3/8-16 UNC threads in pre-drilled holes using high-speed steel with a bright finish

  • TypeTaps
  • Forms threads without chips in ductile materials using high-speed steel
  • Plug chamfer starts easily in through or blind holes with 3/4 in thread length
  • Bright uncoated finish suits general-purpose tapping in steel and aluminum
  • 75 percent thread drill size 11/32 in ensures proper hole preparation
  • H7 thread limit produces Class 2B-3B fit for standard assemblies

Thread forming tap for 3/8-16 UNC threads

This Cleveland C59317 tap forms internal threads by displacing material rather than cutting it, producing stronger threads in ductile metals. It suits maintenance technicians and fabricators who need reliable thread creation in aluminium, brass or mild steel without generating chips that could contaminate assemblies.

Bright uncoated high-speed steel with plug chamfer

The bright finish on high-speed steel resists galling in non-ferrous workpieces while the plug chamfer eases starting in through-holes or deep blind holes. Right-hand cutting and zero flutes mean the tool relies on forming lobes, so lubrication and the correct 11/32 inch drill size are essential for consistent 75 percent thread engagement.

Replaces worn or undersized forming taps

Upgrade when an existing tap shows lobe wear that reduces thread height below the 2B-3B class of fit or when the H7 limit no longer holds tolerance. The jump is worth it if thread strength and chip-free operation outweigh the higher torque required compared with cutting taps.

Highlights

  • Forms threads without chips in ductile materials using high-speed steel
  • Plug chamfer starts easily in through or blind holes with 3/4 in thread length
  • Bright uncoated finish suits general-purpose tapping in steel and aluminum
  • 75 percent thread drill size 11/32 in ensures proper hole preparation
  • H7 thread limit produces Class 2B-3B fit for standard assemblies

Specifications

BrandCLEVELAND
TypeTaps

Questions about this item

What does the UNC 3/8-16 thread standard mean for the threads this tap creates?

It produces Unified National Coarse threads with a 3/8 inch major diameter and 16 threads per inch, matching class 2B-3B fit for standard nuts and bolts.

What drill size and clearance does this tap need to form threads correctly?

Use an 11/32 inch drill for the 75 percent thread depth; the tap has an overall length of 2 15/16 inches with a 3/4 inch thread length.

How do you install this forming tap without breaking it in the hole?

Run the tap straight with steady pressure and cutting fluid; because it has 0 flutes it displaces metal rather than cutting, so forcing it or running dry causes binding and breakage.

More in Power & Pneumatic Accessories

Similar items

Same shelf, same checkout — eight coins and a 30-minute rate lock.