Mutual Screw & Supply

M30-3.5 X 400mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | Class 12.9 Alloy Steel Thermal Black Oxide

M30-3.5 X 400mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | - Main image
$65.57 $104.08 In stock

These M30-3.5 x 400mm 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: Partially Threaded
  • Thread size: M30-3.5
  • Length: 400mm
  • 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: Partially Threaded
  • Thread size: M30-3.5
  • Length: 400mm
  • Measurement type: Metric
  • Pack quantity: 1 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)

Charlotte ★★★★★

Needed a high-strength bolt for a press fixture, and the Class 12.9 rating on these means they handle the load without any issue. The black oxide finish looks professional and seems to resist minor corrosion so far.

David U. ★★★★★

The partial threading on these M30 screws makes alignment in jigs much faster than fully threaded bolts I've used before. They torqued down evenly on my press fixture and the hex socket held up without any rounding. Solid hardware for heavy assembly work.

Emma N. ★★★★★

The black oxide finish looks properly done and the threads are clean all the way down. I used these for a heavy jig setup and the 12.9 alloy steel feels rock solid, no flex at all under load.