Mutual Screw & Supply

5/16-24 X 3-1/2" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially Threaded (50 / Pkg.)

5/16-24 X 3-1/2" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially - Main image
$21.76 $36.26 In stock

5/16-24 x 3-1/2" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade 5 Steel Yellow Zinc construction
  • Partially Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 50

Specifications

  • Thread Size: 5/16-24
  • Length: 3-1/2"
  • Threads Per Inch: 24
  • Material: Steel
  • Grade: Grade 5
  • Finish: Yellow Zinc CR+6
  • Thread Style: Partially Threaded
  • Pack Quantity: 50
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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 (4.6 / 5 · 5 reviews)

Charlotte ★★★★★

The yellow zinc coating on these grade 5 bolts held up perfectly on my trailer hitch repair. They threaded cleanly into the pre-tapped holes without any binding. Exactly what I needed for a heavy-duty assembly.

Robert ★★★★★

I've been using these hex head cap screws for mounting heavy brackets and the Grade 5 steel feels plenty tough for the job. The yellow zinc coating looks good and should help prevent rust in my garage. Fast shipping too.

Riley ★★★★★

The partially threaded design made driving these into my press frame much easier than fully threaded bolts. They seated cleanly with a socket and the yellow zinc finish looks consistent across all fifty pieces.