Mutual Screw & Supply

5/16-24 X 1-1/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Fully Threaded (100 / Pkg.)

5/16-24 X 1-1/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$63.94 $92.66 In stock

5/16-24 x 1-1/4" 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: 1-1/4"
  • 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 (4.6 / 5 · 5 reviews)

Nicholas ★★★★★

These hex bolts turned a rusty mess of a farm jack repair into a solid fix. The yellow zinc coating is even and the threads cut cleanly into the old holes without any binding.

Madison E. ★★★★★

Picked up a pack of these for a project that needed exactly 5/16-24 thread pitch and they fit perfectly with my socket. The hex heads are nice and crisp so the driver grabs securely, no stripping even when torquing them down. Solid industrial fasteners.

Michael D. ★★★★★

These fit perfectly on my milling machine, and the yellow zinc finish is holding up well in a slightly greasy environment. The hex head makes them easy to drive with a socket, and I appreciate that they're fully threaded for a secure hold.