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Cleveland C55230 straight flute hand tap, 7/16"-20 UNF, HSS with TiN coating, bottoming chamfer

Cleveland

Cleveland C55230 Straight Flute Hand Tap 7/16"-20 UNF Bottoming HSS TiN

SKU CH-213J-3J18D

Cuts 7/16"-20 UNF threads in a 3.16 in HSS TiN bottoming tap with 1.44 in thread length

  • Product typeTaps
  • Cuts precise 7/16"-20 UNF threads
  • Bottoming chamfer threads close to blind-hole bottoms
  • High-speed steel with TiN coating resists wear
  • 44 inch thread length suits standard depths
  • 16 inch overall length fits tap handles

Cleveland C55230 Straight Flute Hand Tap

The Cleveland C55230 is a straight flute hand tap designed for creating 7/16"-20 UNF threads. It suits machinists and maintenance technicians who cut internal threads by hand or with a tapping head. The bottoming chamfer allows threading close to the bottom of a blind hole. High speed steel construction with a TiN coating provides wear resistance for general-purpose materials.

7/16"-20 UNF thread capacity and headroom

This tap produces a 7/16"-20 UNF Class 2B fit with an H3 thread limit. The 75 percent thread drill size is 9.95 mm. Thread length measures 1.44 inches within an overall length of 3.16 inches. It handles through holes and blind holes where the bottoming lead can reach. Very deep blind holes or extremely hard alloys may exceed the practical limits of a straight flute geometry.

Bottoming chamfer for blind-hole threading

The bottoming chamfer is the decisive specification. It cuts full threads nearer to the closed end of a hole than a taper or plug tap. Buyers who need to start threads in a through hole or who prefer easier starting torque should select a taper or plug chamfer instead. This tool is not for left-hand thread applications.

How it compares

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

Price $18.99
Cheaper than about 66% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

Will this 7/16"-20 UNF tap work with my existing 9.95 mm drill bit for 75 percent thread engagement?

Yes, the 75 percent thread drill size is specified as 9.95 mm, so your existing bit matches the requirement for this tap.

How can I confirm the tap is cutting correctly once I start threading?

Check that the threads form cleanly to the 1.44 inch thread length with a Class 2B fit and that the TiN coating shows even wear without chipping.

Does the package include a handle or wrench, or must I supply my own?

The tap is a standalone straight flute hand tap; a tap wrench or handle is not included and must be purchased separately.

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