Mutual Screw & Supply

#4-40 X 1/4" Socket Cap Screws | Hex Socket Drive | Fully Threaded | 316 Stainless Steel (800 / Pkg.)

#4-40 X 1/4" Socket Cap Screws | Hex Socket Drive | Fully Threaded | 316 - Main image
$22.59 $35.86 In stock

These #4-40 x 1/4" 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
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: #4-40
  • Length: 1/4"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: 316 Stainless Steel
  • Finish: Plain
  • Grade: 316
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: #4-40
  • Length: 1/4"
  • Threads per inch: 40
  • Measurement type: Inch
  • Pack quantity: 800 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)

James ★★★★★

I needed a small, strong fastener for a jig I'm building, and these 316 stainless screws are perfectly sized at 1/4 inch. The hex socket drive made them easy to install without stripping, and the whole 800-pack feels like a lifetime supply.

Eli D. ★★★★★

The hex socket drive gripped my Allen key perfectly on every single screw—no stripped heads across all 800 pieces. The 316 stainless finish looks clean and corrosion-resistant, exactly what I needed for the jig I’m building.

Andrew ★★★★★

I was replacing some small fasteners on a jig and these #4-40 socket cap screws threaded in effortlessly with a hex key. The 316 stainless steel feels solid and corrosion-resistant for my shop tools. The full threading gave me a good grip in the metal, so I didn't have to worry about them loosening