Mutual Screw & Supply

1/2-13 X 2-1/4" Heavy Hex Cap Screws | USA Made | A307 Grade B Steel Zinc Plated | Partially Threaded (225 / Pkg.)

1/2-13 X 2-1/4" Heavy Hex Cap Screws | USA Made | A307 Grade B Steel Zinc - Main image
$215.6 $312.47 In stock

A307 Grade B Steel Zinc Plated hex head cap screws, partially threaded, size 1/2-13 x 2-1/4". A dependable fastener for machinery, equipment assembly, and general industrial use.

  • A307 Grade B Steel Zinc Plated construction
  • partially threaded configuration
  • Hex head for wrench or socket drive
  • For machinery, equipment, and general-purpose fastening

Specifications

  • Thread Size: 1/2-13
  • Length: 2-1/4"
  • Threads Per Inch: 13
  • Material: A307 Grade B Steel Zinc Plated
  • Finish: Zinc Plated CR+3
  • Thread Style: Partially Threaded
  • Pack Quantity: 225
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Lucy ★★★★★

Installed these on a heavy machinery frame and the 1/2-13 threads grabbed perfectly without any binding. The partially threaded shank made alignment easier than fully threaded bolts, and the zinc finish still looks factory-new after a few weeks outdoors.

Edward M. ★★★★★

The zinc coating on these bolts is even and consistent, no flaking or rough spots like I've seen on cheaper hardware. They seated perfectly in my tapping plate without any binding.

Harper S. ★★★★★

These hex bolts threaded smoothly into my steel brackets without any binding. The zinc coating has a nice, even finish that should hold up well indoors. For a bulk pack of 225, the price per bolt is hard to beat.