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Cleveland spiral point tap 7/16-20 UNF three-flute HSS bright finish

Cleveland

Cleveland C57196 Spiral Point Tap 7/16-20 UNF 3 Flutes HSS

SKU CH-5J87-BH20P

Cuts 7/16-20 UNF threads in through-holes using three-flute high-speed steel for efficient chip ejection

  • Spiral point design pushes chips forward for smoother tapping
  • 7/16-20 UNF thread size fits standard fine-pitch applications
  • High-speed steel construction resists wear during repeated use
  • Three-flute geometry balances chip clearance with cutting strength
  • Bright uncoated finish suits general-purpose threading tasks

Spiral Point Tap for UNF Threads

The Cleveland C57196 is a spiral point tap designed to cut 7/16-20 UNF threads in through-hole applications. Its plug chamfer and three-flute geometry push chips ahead of the cut, reducing torque and improving thread quality in steel and general-purpose metals. Machinists and maintenance technicians use it for production threading where efficient chip evacuation matters.

High-Speed Steel Construction and Bright Finish

Made from high-speed steel with an uncoated bright surface, the tap resists wear during repetitive hand or machine tapping. The right-hand spiral point suits standard rotation equipment, while the H5 thread limit targets a 2B-3B class of fit for standard nut engagement. Overall length measures 3 5/32 inches with a 1 7/16 inch thread length for adequate reach in typical workpieces.

75 Percent Thread Drill Size 9.95 mm

The single specification that determines fit is the 75 percent thread drill size of 9.95 mm; using a different drill diameter will produce an incorrect thread percentage and risk tap breakage or loose fasteners. Shops without a 9.95 mm drill bit cannot prepare the correct hole for this 7/16-20 UNF tap.

How it compares

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

Price $14.99
Cheaper than about 77% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND

Questions about this item

What thread standard does the 7/16-20 UNF tap follow, and what class of fit does it produce?

It follows the Unified National Fine standard and produces a 2B-3B class of fit with an H5 thread limit.

What drill size is needed for the 75 percent thread depth this tap requires?

A 9.95 mm drill is specified for the 75 percent thread engagement before tapping.

How is this spiral-point plug tap started correctly in a through hole?

Align it perpendicular to the workpiece, apply steady forward pressure while turning clockwise, and use cutting fluid to prevent the 3-flute HSS cutter from binding.

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