Mutual Screw & Supply

5/16-24 X 2-1/4" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially Threaded (100 / Pkg.)

5/16-24 X 2-1/4" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially - Main image
$31.31 $48.17 In stock

5/16-24 x 2-1/4" 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 100

Specifications

  • Thread Size: 5/16-24
  • Length: 2-1/4"
  • Threads Per Inch: 24
  • Material: Steel
  • Grade: Grade 5
  • Finish: Yellow Zinc CR+6
  • Thread Style: Partially Threaded
  • Pack Quantity: 100
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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)

Hazel ★★★★★

These are exactly what I needed for a heavy equipment repair—the Grade 5 steel feels tough and the yellow zinc coating looks like it'll resist rust well. The partially threaded design made them easy to start by hand before tightening with a wrench.

Ruby B. ★★★★★

The hex heads are cut clean, so my socket grips them without any slip, and the partial threading makes aligning the bolt in tight spots much easier. Tossed a dozen into my equipment frame and every one seated flush with no binding through the zinc.

Ryan I. ★★★★★

These came in a sturdy box and the threads are cut clean, no burrs. The yellow zinc finish looks uniform across the whole batch, so they'll be easy to spot in my spare parts bin.