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Cleveland C55058 straight flute hand tap, bright uncoated steel, 6.38 in overall length

Cleveland

Cleveland C55058 Straight Flute Hand Tap 1-1/2"-6 Plug pneumatic accessory

SKU CH-5FGE-Q1K8P

Straight flute hand tap cuts 1-1/2"-6 UNC threads with a 6.38 in overall length and H4 limit

  • Product typeTaps
  • Straight-flute design starts threads cleanly in through-holes
  • High-speed steel resists wear for repeatable thread quality
  • Bright uncoated finish suits general-purpose tapping jobs
  • 75 percent thread engagement gives strong, reliable joints
  • Plug chamfer eases alignment when starting by hand

Cleveland C55058 Straight Flute Tap

The Cleveland C55058 is a straight flute hand tap designed for creating internal threads in a variety of materials. It suits maintenance technicians and machinists who need to cut precise UNC threads by hand or with a tapping head. The bright, uncoated high-speed steel construction provides a standard option for general-purpose threading tasks.

Uncoated High-Speed Steel Design

The bright finish means the tap has no surface coating to alter friction or chip evacuation characteristics. High-speed steel offers a balance of toughness and wear resistance for standard steel and non-ferrous workpieces. Users must supply their own cutting fluid or lubricant to manage heat and improve thread quality during the operation.

1-1/2 Inch UNC Thread Capacity

This tap cuts a 1-1/2"-6 UNC thread with a 3-inch thread length and an overall length of 6.38 inches. The H4 thread limit targets a Class 2B fit, requiring a 75 percent thread drill size of 1.3376 inches for proper preparation. It is not suited for bottoming blind holes or for materials that demand coated or spiral-flute geometries for chip control.

How it compares

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

Price $191.99
Pricier than about 90% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

When will the straight-flute hand tap need replacement?

Replace the tap once the cutting edges dull or chip, which shows as increased torque, rough threads or oversized holes in the 1-1/2"-6 UNC size.

What limit appears first during sustained threading?

The H4 thread limit and 2B class of fit define the tolerance envelope; exceeding either on the 1.3376 in drill size causes gauge failure.

How much heat builds up when running the tap all day?

High-speed steel dissipates heat, but continuous cutting in 1-1/2"-6 UNC material raises temperature; use cutting fluid to control thermal expansion.

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