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Greenfield Threading 313531 straight flute hand tap 7/16-14 semi-bottoming HSS bright finish

Greenfield Threading

Greenfield Threading 313531 shelving 7/16-14 straight flute hand tap semi-bottoming

SKU CH-2WVA-E982X

A 7/16"-14 UNC straight-flute hand tap for semi-bottoming threads in through or blind holes

  • 7/16"-14 UNC thread cuts standard coarse threads
  • Semi-bottoming chamfer starts threads in blind holes
  • High-speed steel body resists wear during repeated use
  • Three-flute design clears chips for smoother cutting
  • Bright finish prevents coating buildup in tapped holes

Thread size and pitch

The Greenfield Threading 313531 is a straight flute hand tap designed to cut unified coarse threads at 7/16 inch with 14 threads per inch. It serves machinists and maintenance technicians who need to create internal threads in through-holes or blind holes by hand.

High-speed steel construction

Made from high-speed steel with a bright uncoated finish, the tap offers a thread length of 1 7/16 inches and an overall length of 3 1/8 inches. The semi-bottoming chamfer and three-flute design let it start easily in a drilled hole and clear chips without requiring a powered tapping head.

H11 thread limit performance

The H11 thread limit and 75 percent thread drill size U provide a controlled fit that holds tolerance during repeated manual use. Under sustained hand-tapping cycles the tool maintains consistent thread geometry without the overheating risk that can affect high-speed production tapping.

How it compares

Measured against everything we stock in Closet Organizers & Storage Bins, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 92% of the 1,106 comparable items (median $26.99).

Specifications

Product
Brand nameGREENFIELD THREADING

Questions about this item

What is the H11 thread limit on this 7/16"-14 tap?

The tap is manufactured to an H11 thread limit for the 7/16"-14 UNC size.

How much heat builds up in the high-speed steel during extended hand tapping?

High-speed steel resists heat buildup well during intermittent hand use with cutting fluid.

Which 75 percent thread drill size is required before using this tap?

A size U drill is specified for 75 percent thread engagement with this tap.

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