Mutual Screw & Supply

5/16-24 X 3/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Fully Threaded (100 / Pkg.)

5/16-24 X 3/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$42.42 $67.33 In stock

5/16-24 x 3/4" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade L9 Alloy Steel Yellow Zinc construction
  • Fully Threaded
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 100

Specifications

  • Thread Size: 5/16-24
  • Length: 3/4"
  • Threads Per Inch: 24
  • Material: Alloy Steel
  • Grade: Grade L9
  • Finish: Yellow Zinc CR+3
  • Thread Style: Fully 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 (4.8 / 5 · 5 reviews)

Brian ★★★★★

Picked up a pack of these for a little equipment repair project at the shop. The threads cut cleanly into the steel frame, and the hex drive seated perfectly without any stripping. They've held up well so far, which is exactly what I needed for this job.

Madison X. ★★★★★

I needed some strong fasteners for a machine guard, and these L9 alloy steel screws held up perfectly under pressure. The yellow zinc finish gives them a nice corrosion-resistant look.

Olivia D. ★★★★★

These bolts threaded cleanly into a tight spot where I couldn't afford any stripping, and the yellow zinc finish looks great for exposed applications. The Grade L9 alloy steel feels noticeably tougher than standard hardware I've used before.