Mutual Screw & Supply

M3-0.5 X 20mm Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded | Class 12.9 Alloy Steel Thermal Black Oxide (600 / Pkg.)

M3-0.5 X 20mm Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded - Main image
$28.79 $39.98 In stock

These M3-0.5 x 20mm 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: 20mm
  • 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: 20mm
  • Measurement type: Metric
  • Pack quantity: 600 per package
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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)

Elizabeth T. ★★★★★

I needed a bulk pack for building jigs, and these are exactly what I was hoping for. The black oxide coating seems durable, and every screw in the package threaded cleanly without any grit.

Lily ★★★★★

The hex socket drive on these M3 screws makes them so much easier to get torque on compared to Phillips heads. The black oxide finish looks professional and seems to hold up well against oil and handling in my jig build.

Julian L. ★★★★★

These screws are a solid upgrade for my precision assemblies, and the thermal black oxide finish gives them a nice, consistent coating that resists fingerprints. The hex socket drive bites cleanly with a 2.5mm allen key, and all 600 in the bag checked out with no damaged threads.