Mutual Screw & Supply

1/4-20 X 3-1/2" Socket Cap Screws | Hex Socket Drive | 18/8 Stainless Steel (100 / Pkg.)

1/4-20 X 3-1/2" Socket Cap Screws | Hex Socket Drive | 18/8 Stainless Steel - Main image
$25.07 $36.34 In stock

These 1/4-20 x 3-1/2" 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
  • Drive: Hex Socket Drive
  • Thread size: 1/4-20
  • Length: 3-1/2"
  • 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 size: 1/4-20
  • Length: 3-1/2"
  • Threads per inch: 20
  • Measurement type: Inch
  • Pack quantity: 100 per package
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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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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)

Ava ★★★★★

I needed some long stainless fasteners for a machine guard, and these 3-1/2" socket cap screws were exactly the right length. The hex drive seated perfectly without any cam-out, which I appreciate when working in tight spots. They look clean and corrosion-resistant so far.

Abigail ★★★★★

Ordered these for a tooling fixture and the 18/8 stainless finish is holding up great—no rust spots after a week in a humid shop. The 3-1/2" length gave me just enough thread engagement for my jig, and the hex socket drive saved my knuckles versus a standard bolt.

Owen ★★★★★

The hex socket drive made these easy to torque down in tight spots on my tooling setup, and the 18/8 stainless finish hasn't shown any corrosion after a few weeks in a damp shop. They're exactly as described and a solid value for the quantity.