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Bright high-speed steel straight-flute tap with three flutes

Greenfield Threading

Greenfield Threading 313535 Straight Flute Hand Tap Semi-Bottoming 3 Flutes pneumatic accessory

SKU CH-RS8Q-AQFKG

A straight-flute hand tap cuts 5/8 in.-11 UNC threads in a semi-bottoming style with three flutes

  • Straight flute design clears chips efficiently in through holes
  • Semi-bottoming chamfer starts threads easily in blind holes
  • Three flutes balance strength and chip removal for consistent tapping
  • High-speed steel construction resists wear during repetitive threading tasks
  • Bright uncoated finish suits general-purpose use on ferrous and non-ferrous metals

Thread size and pitch

This CHICAGO-LATROBE hand tap cuts a 5/8 inch UNC thread with an 11 pitch. The semi-bottoming design suits general purpose threading tasks where a full bottoming tap is not required. Three straight flutes provide standard chip clearance for through or blind holes.

High-speed steel performance under load

The bright uncoated high-speed steel body resists wear during repeated manual or powered tapping cycles. Cutting a 75 percent thread depth means less torque is needed per pass compared to deeper thread forms. H11 thread limit and 1B class of fit maintain consistent geometry across sustained production runs.

Drill size and length constraints

A 13.60 mm drill size is specified to prepare the correct 75 percent thread hole before tapping. The overall length of 3 13/16 inches and a thread length of 1 13/16 inches define the reach and cutting zone for the workpiece. Right-hand thread direction follows standard UNC convention for the intended application.

How it compares

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

Price $28.99
Typical for this category: the median of 5,493 items is $27.99.

Specifications

Product
Brand nameCHICAGO-LATROBE

Questions about this item

How much power does the 313535 hand tap draw when running all day?

The 313535 is a manual straight-flute hand tap with no motor, so it draws no power and produces no heat or noise during use.

What tool holder or wrench is needed to turn the 313535 tap?

A standard tap wrench or T-handle that fits the square on the shank is required; the tap itself has no built-in drive mechanism.

Can the 313535 cut threads in an existing hole drilled for an older 5/8-11 UNC tap?

Yes, it follows the same 5/8-11 UNC pitch and 1B class of fit, so it will chase or cut threads in a hole prepared to the 13.60 mm drill size.

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