Mutual Screw & Supply

M3-0.5 X 4mm Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded | Class 12.9 Alloy Steel Thermal Black Oxide (400 / Pkg.)

M3-0.5 X 4mm Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded - Main image
$34.19 $47.48 In stock

These M3-0.5 x 4mm socket cap screws are manufactured from Alloy Steel Thermal Black Oxide, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Alloy Steel Thermal Black Oxide
  • Head style: Button Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: M3-0.5
  • Length: 4mm
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Button Head
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Grade: Class 12.9
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: M3-0.5
  • Length: 4mm
  • 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 (4.4 / 5 · 5 reviews)

Benjamin ★★★★★

The black oxide finish on these M3 screws is surprisingly consistent across the whole 400-pack. Used them for mounting some 3D printer components and they threaded perfectly without any binding.

Harper ★★★★★

Finally found a good source for these tiny M3 button heads—the black oxide finish looks clean and the hex drive bites well without stripping. Just used a batch to mount some 3D printed jigs and every screw threaded smoothly.

Olivia E. ★★★★★

Needed a few of these for a small jig I was building, and they threaded into the holes perfectly without any stripping. The hex drive made it easy to get them tight in tight spaces.