Mutual Screw & Supply

M3-0.5 X 30mm Socket Cap Screws | Flat Head Hex Socket Drive | Partially Threaded | Class 10.9 Alloy Steel Thermal Black Oxide (400 / Pkg.)

M3-0.5 X 30mm Socket Cap Screws | Flat Head Hex Socket Drive | Partially - Main image
$31.89 $51.44 In stock

These M3-0.5 x 30mm 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: Partially Threaded
  • Thread size: M3-0.5
  • Length: 30mm
  • 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: Partially Threaded
  • Thread size: M3-0.5
  • Length: 30mm
  • Measurement type: Metric
  • Pack quantity: 400 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)

Joshua ★★★★★

The black oxide finish on these M3s looks properly done and they threaded into my jig without any binding. For 400 pieces at this price, the Class 10.9 hardness is a solid deal.

Ellie ★★★★★

I needed some strong M3 screws for a custom jig I’m building, and these 10.9 alloy steel bolts feel rock-solid—especially the black oxide coating, which seems more durable than plain steel. The hex socket drive made installation quick with my allen key, and the partial threading gave me just enough

Elizabeth ★★★★★

The hex socket drive on these M3 screws makes installation in tight spots much easier than with a Phillips head. The 30mm length was perfect for my jig assembly. I’m glad I went with the partially threaded design for a cleaner hold.