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Cleveland straight flute hand tap, bright finish, 4.69 in long

Cleveland

Cleveland C54885 Straight Flute Hand Tap 7/8"-9 Plug pneumatic accessory

SKU CH-6T3G-TN8B4

Straight flute hand tap cuts 7/8"-9 UNC threads in a plug style with a 4.69 in overall length and 2.22 in thread length, made from uncoated high-speed steel for right-hand threading

  • Product typeTaps
  • Creates precise 7/8"-9 UNC threads with a straight-flute design
  • Plug chamfer eases thread starts in through or blind holes
  • High-speed steel construction resists wear for longer tap life
  • Bright uncoated finish reduces galling on ferrous materials
  • 69 in overall length and 2.22 in thread length suit deep-hole tapping

Straight Flute Hand Tap 7/8"-9

The Cleveland C54885 is a straight flute hand tap designed for cutting internal threads in a variety of materials. It suits maintenance technicians and machinists who need to create or repair 7/8"-9 UNC threads using manual or powered tapping operations.

UNC Thread Standard and Plug Chamfer

This tap follows the Unified National Coarse standard with a 7/8 inch diameter and 9 threads per inch. The plug chamfer provides a moderate lead of three to five threads, making it suitable for through holes and blind holes with sufficient clearance. A 75 percent thread engagement requires a 19.50 mm drill size for proper hole preparation.

High-Speed Steel Construction and Bright Finish

The tap is manufactured from high-speed steel with a bright uncoated surface and right-hand cutting direction. Its overall length measures 4.69 inches with a 2.22 inch thread length and H4 thread limit for a 2B class of fit. The straight flute design requires periodic chip clearing during use and is not suited for deep blind holes where chip evacuation is difficult.

How it compares

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

Price $51.99
Pricier than about 68% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

Which tap size and thread limit should I choose for a 7/8"-9 UNC hole?

The C54885 is a 7/8"-9 UNC plug tap with an H4 thread limit and Class 2B fit, intended for through-hole or blind-hole threading where a standard fit is required.

What does the 2.22 in thread length mean when I am tapping a workpiece?

The 2.22 in thread length is the cutting portion of the tap; it determines the maximum depth of full-form threads you can produce in a single pass without bottoming out.

What does the 19.50 mm drill size indicate for this tap?

The 19.50 mm drill size is the recommended 75 percent thread engagement tap drill diameter for preparing a hole before using this 7/8"-9 UNC tap.

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