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Bright uncoated thread forming tap #10-24 UNC H4 75% 4.27mm

Cleveland

Cleveland C59250 Thread Forming Tap #10-24 UNC H4 75% 4.27mm

SKU CH-0M2P-SEHJ7

Thread forming tap cuts #10-24 UNC threads with H4 limits and 75% drill size 4.27mm

  • TypeTaps
  • Forms precise #10-24 UNC threads without chip removal
  • Bright uncoated finish suits general-purpose tapping tasks
  • High-speed steel construction resists wear during repeated use
  • 75 % thread depth with 4.27 mm drill size ensures secure engagement
  • H4 thread limit matches Class 2B fit for reliable assemblies

Cleveland C59250 Thread Forming Tap

The Cleveland C59250 is a thread forming tap designed to create internal threads in ductile materials by displacing metal rather than cutting it. It produces a #10-24 UNC thread with an H4 limit for a 2B class of fit. The tap features a right-hand thread direction and a bright uncoated high-speed steel construction.

Sustained load performance

Because the tool forms threads through cold forming, it generates no chips during operation. This characteristic reduces the risk of chip packing in deep or blind holes during extended production runs. The bright finish relies on proper lubrication to manage friction and heat buildup when forming threads continuously in tougher alloys. The 75 percent thread depth specification helps balance thread strength with forming torque requirements.

Setup checks

Verify that the pre-drilled hole diameter matches the required 4.27 mm drill size for 75 percent thread engagement. Ensure the workpiece material is suitable for thread forming, as brittle or hardened materials are not compatible with this process. Confirm the machine spindle rotates right-hand and that the tapping holder accommodates the tap shank dimensions. The bottoming chamfer style requires sufficient clearance at the bottom of blind holes.

Highlights

  • Forms precise #10-24 UNC threads without chip removal
  • Bright uncoated finish suits general-purpose tapping tasks
  • High-speed steel construction resists wear during repeated use
  • 75 % thread depth with 4.27 mm drill size ensures secure engagement
  • H4 thread limit matches Class 2B fit for reliable assemblies

Specifications

BrandCLEVELAND
TypeTaps

Questions about this item

How much heat does the Cleveland C59250 tap generate during extended threading operations?

The uncoated high-speed steel tap produces heat through metal displacement rather than cutting; using cutting fluid keeps temperatures manageable during long sessions.

What drill bit must I already own to prepare holes for this #10-24 UNC forming tap?

A 4.27 mm drill bit is required to create the 75 percent thread engagement hole before tapping.

Will this H4 limit tap work correctly with older Class 2B gauges and fixtures I still use?

Yes, the H4 thread limit is manufactured to a Class 2B fit, so it remains compatible with existing 2B go/no-go gauges and mating parts.

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