Mutual Screw & Supply

M3-0.5 X 18mm Socket Cap Screws | Hex Socket Drive | Fully Threaded | Class 12.9 Alloy Steel Thermal Black Oxide (600 / Pkg.)

M3-0.5 X 18mm Socket Cap Screws | Hex Socket Drive | Fully Threaded | Class - Main image
$24.04 $38.16 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
  • 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
  • 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: 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)

Steven ★★★★★

Finally found M3s in this length that don't strip out. The black oxide finish on these is even and clean, and they seated perfectly in my aluminum jig without any galling.

Ava ★★★★★

Came out perfect for holding a small jig together on my CNC mill. The black oxide finish gives them a nice, consistent look across the whole pack of 600.

Emma C. ★★★★★

I needed a high-strength fastener for a small jig I'm building, and the Class 12.9 alloy steel on these gives me total confidence they won't strip. The black oxide finish also looks great against the aluminum frame.