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Straight flute hand tap 5/8-11 plug bright finish

Cleveland

Cleveland C54780 Straight Flute Hand Tap 5/8"-11 Plug pneumatic accessory

SKU CH-SYZG-S9WXW

Straight flute hand tap cuts 5/8"-11 UNC threads with a 1.81 in thread length and 3.81 in overall length

  • Product typeTaps
  • UNC threading suits standard fasteners
  • 5/8"-11 plug tap starts threads cleanly
  • High-speed steel resists wear in repeated use
  • 81 in thread length cuts full depth
  • 81 in overall length fits standard holders

Threading tap for UNC 5/8"-11 holes

This Cleveland C54780 straight flute hand tap cuts internal threads in a 5/8 inch diameter, 11 threads-per-inch UNC pattern. The plug chamfer starts threads easily in through holes or deep blind holes. It is intended for machinists and maintenance technicians who cut threads by hand or with a reversible tap wrench.

High-speed steel limits speed and material range

The bright, uncoated high-speed steel body resists wear in mild steel and non-ferrous metals but cannot handle the heat of high-speed machine tapping or hard alloys. Thread length is 1.81 inches within an overall length of 3.81 inches. The H3 limit produces a class 2B fit when used with the specified 75 percent thread drill size of 13.60 mm.

Plug chamfer decides the starting condition

The plug style is the single specification that determines whether this tap matches the hole type. It provides a moderate lead for general-purpose starting but will not reach the bottom of a shallow blind hole. Buyers who need to thread to the bottom of a blind hole require a bottoming chamfer instead.

How it compares

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

Price $33.99
Pricier than about 56% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

Which thread size should I choose for this tap?

The tap cuts a 5/8"-11 UNC thread with a 75 percent thread drill size of 13.60 mm and a thread limit of H3 for a class 2B fit.

What does the overall length mean when the tap is in use?

The overall length is 3.81 in with a thread length of 1.81 in, so only the lower 1.81 in engages the workpiece while the shank remains above the hole.

What standard does the straight flute design follow and what does it limit?

It follows a standard straight flute hand tap design for right-hand UNC threads, limiting use to through-holes or shallow blind holes where chips can clear forward.

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