Mutual Screw & Supply

M3-0.5 X 18mm Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | Class 10.9 Alloy Steel Thermal Black Oxide (600 / Pkg.)

M3-0.5 X 18mm Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | - Main image
$25.57 $35.52 In stock

These M3-0.5 x 18mm 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: Flat Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: M3-0.5
  • Length: 18mm
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Flat Head
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Grade: Class 10.9
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: M3-0.5
  • Length: 18mm
  • 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 (4.6 / 5 · 5 reviews)

Leo ★★★★★

The black oxide finish on these M3 screws is surprisingly uniform, and the hex socket drive grips firmly without stripping. I used them to rebuild a small jig, and all 600 pieces came ready to thread with no burrs.

Riley ★★★★★

I needed a solid batch of M3 screws for a jig build, and these flat head cap screws threaded in perfectly every time without any stripping. The black oxide finish adds just enough grip for my precision assemblies.

Adam D. ★★★★★

These flat head screws sit perfectly flush in the counterbores I machined for a tooling fixture. The black oxide finish seems consistent across all six hundred, and the hex drive engages cleanly without stripping.