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Cleveland straight-flute hand tap 7/16-14 UNC high-speed steel bright finish

Cleveland

Cleveland 54656 Straight Flute Hand Tap 7/16-14 UNC

SKU CH-5R1G-RKT7Z

A three-piece high-speed steel tap kit creates 7/16"-14 UNC threads with a bright finish

  • Product typeTaps
  • Straight-flute design for easy hand tapping
  • Three-piece kit covers taper, plug and bottoming cuts
  • High-speed steel construction resists wear in general-purpose use
  • 7/16"-14 UNC thread size fits standard coarse-thread applications
  • Bright uncoated finish suits a wide range of materials

Cleveland 54656 Hand Tap Kit

This Cleveland 54656 kit supplies three straight-flute hand taps for cutting 7/16-14 UNC threads in through-holes or blind holes. It is intended for machinists and maintenance technicians who need to produce Class 3B internal threads in steel, cast iron or non-ferrous metals using hand or light machine tapping.

High Speed Steel Bright Finish

The taps are made from high speed steel with a bright uncoated surface that resists galling in softer materials and allows easy inspection of the cutting edges. Four flutes provide chip space and cutting stability while the H3 thread limit keeps the finished thread within the 3B tolerance band during normal hand-tapping operations.

75 Percent Thread Drill Size V

Each tap has a thread length of 1 7/16 in and an overall length of 3 5/32 in, requiring a drill size V hole prepared to the 75 percent thread engagement standard. The right-hand thread direction and UNC pitch mean the tool fits standard inch-series fastener assemblies without additional adapters or special holders.

How it compares

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

Price $44.99
Pricier than about 64% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

How do I install the three-piece 7/16-14 UNC tap set, and which step is most often done wrong?

Start with the taper tap to begin the thread, follow with the plug tap to deepen it, and finish with the bottoming tap for full depth; the common error is skipping the taper tap and forcing the plug tap into an unstarted hole.

What maintenance or replacement will the high-speed steel taps need later?

HSS taps dull with use; resharpen the four flutes or replace individual taps once cutting edges wear, and apply cutting fluid each time to extend life.

What limit appears first during sustained threading with the H3 class-of-fit taps?

The H3 pitch-diameter tolerance is the first limit reached; exceeding it produces oversize threads that fail a 3B go/no-go gauge check.

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