Mutual Screw & Supply

M3-0.5 X 40mm Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | 316 Stainless Steel (400 / Pkg.)

M3-0.5 X 40mm Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | - Main image
$25.06 $36.32 In stock

These M3-0.5 x 40mm 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: M3-0.5
  • Length: 40mm
  • 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: M3-0.5
  • Length: 40mm
  • Measurement type: Metric
  • Pack quantity: 400 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)

Evelyn ★★★★★

Needed a full batch of corrosion-resistant fasteners for a saltwater robotics project—these 316 stainless hex drive screws are holding up perfectly where standard ones would rust. The threads are sharp and consistent across all 400 pieces, which saved me time on cleanup.

Robert G. ★★★★★

Finally got around to mounting these on a custom jig I've been building, and the 316 stainless holds up much better than the zinc-plated ones I used before. The full threading on 40mm length is perfect for clamping two different thicknesses of aluminum plate securely.

Richard A. ★★★★★

The hex socket drive grabs perfectly, no stripping even when torquing down on these 316 stainless screws. Used a full bag for a marine jig project and every single one threaded cleanly without any binding.