Mutual Screw & Supply

5/16-18 X 1-3/4" Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | 316 Stainless Steel (100 / Pkg.)

5/16-18 X 1-3/4" Socket Cap Screws | Flat Head Hex Socket Drive | Fully - Main image
$34.94 $49.91 In stock

These 5/16-18 x 1-3/4" socket cap screws are manufactured from 316 Stainless Steel, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: 316 Stainless Steel
  • Head style: Flat Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/16-18
  • Length: 1-3/4"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Flat Head
  • Material: 316 Stainless Steel
  • Finish: Plain
  • Grade: 316
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/16-18
  • Length: 1-3/4"
  • Threads per inch: 18
  • Measurement type: Inch
  • Pack quantity: 100 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 (4.8 / 5 · 5 reviews)

Matthew F. ★★★★★

The fully threaded profile made all the difference for my jig setup—no wasted time adjusting depth. The 316 stainless finish feels solid and corrosion-resistant, exactly what I needed for a marine-adjacent workspace. Pack of 100 means I won't be reordering anytime soon.

Ava ★★★★★

The hex socket drive on these gripped my Allen key perfectly with no stripping, and the 316 stainless has that solid, slightly heavier feel you want for marine-grade work. I used a full pack on a custom jig frame and every one threaded cleanly to the end. Exactly what I needed for a precision assemb

Victoria ★★★★★

Needed a corrosion-proof fastener for a marine jig I’m building, and these 316 stainless screws went in smooth without any binding. The hex drive held tight even when torquing them down. Exactly what I needed for outdoor use.