Mutual Screw & Supply

1/4-20 X 5/16" Socket Cap Screws | Hex Socket Drive | USA Made | Fully Threaded | 18/8 Stainless Steel (100 / Pkg.)

1/4-20 X 5/16" Socket Cap Screws | Hex Socket Drive | USA Made | Fully Threaded - Main image
$35.83 $59.72 In stock

These 1/4-20 x 5/16" socket cap screws are manufactured from 18/8 Stainless Steel, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: 18/8 Stainless Steel
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 1/4-20
  • Length: 5/16"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: 18/8 Stainless Steel
  • Finish: Plain
  • Grade: 18/8
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 1/4-20
  • Length: 5/16"
  • Threads per inch: 20
  • Measurement type: Inch
  • Pack quantity: 100 per package
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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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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)

Carter ★★★★★

These little screws are perfect for securing jig components on my workbench. The hex socket drives cleanly without stripping, and the stainless steel feels solid and corrosion-resistant.

Ella Z. ★★★★★

I needed a handful of these for a small jig on my drill press, and the fully threaded design made them easy to adjust. The 18/8 stainless feels plenty strong for the job, and all 100 screws arrived cleanly threaded with no burrs.

Miles L. ★★★★★

The hex socket seated perfectly on my driver, no wobble at all, and every single screw in the 100-pack threaded cleanly into my jig without a single burr. The 18/8 stainless finish is smooth and bright, exactly what I wanted for a precision assembly.