Mutual Screw & Supply

5/16-18 X 4-1/2" Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded | 18/8 Stainless Steel (50 / Pkg.)

5/16-18 X 4-1/2" Socket Cap Screws | Button Head Hex Socket Drive | Fully - Main image
$34.36 $56.32 In stock

These 5/16-18 x 4-1/2" 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
  • Head style: Button Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/16-18
  • Length: 4-1/2"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Button Head
  • Material: 18/8 Stainless Steel
  • Finish: Plain
  • Grade: 18/8
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/16-18
  • Length: 4-1/2"
  • Threads per inch: 18
  • Measurement type: Inch
  • Pack quantity: 50 per package
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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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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)

Samuel T. ★★★★★

The hex socket drive seated perfectly on my driver without any wobble, and the 18/8 stainless finish feels solid for the jig I’m building. Threads ran clean through my steel plate, no binding or burrs. Exactly the consistency I needed across all 50 pieces.

George ★★★★★

These 4-1/2" screws are exactly what I needed for a custom jig I'm building. The hex socket drive made installation much easier than using a traditional slotted head. Very solid feel with the stainless steel material.

George ★★★★★

The full thread engagement on these 4.5-inch stainless screws is great for my heavy machinery jigs, and the hex drive bit grabs securely without stripping. They feel solid and corrosion-resistant right out of the package.