Mutual Screw & Supply

M3-0.5 X 20mm Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | Class 12.9 Alloy Steel Zinc Plated (400 / Pkg.)

M3-0.5 X 20mm Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | - Main image
$24.3 $37.38 In stock

These M3-0.5 x 20mm socket cap screws are manufactured from Alloy Steel Zinc Plated, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Alloy Steel Zinc Plated
  • Head style: Flat 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: Flat Head
  • Material: Alloy Steel
  • Finish: Zinc Plated
  • Grade: Class 12.9 CR+3
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: M3-0.5
  • Length: 20mm
  • 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 (5.0 / 5 · 5 reviews)

Stella T. ★★★★★

The hex socket drive bites cleanly without stripping, even at 12.9 grade hardness, and the zinc plating held up fine during assembly. For 400 pieces at this price, they’re a no-brainer for fixture work.

Evelyn ★★★★★

I've been using these in a few jigs on the bench and the hex socket drive takes a standard allen key without any stripping. The threads are consistent across all 400 pieces, which is exactly what I need for precision work.

Grace N. ★★★★★

The zinc plating on these M3-0.5×20mm screws is even and smooth, so they thread into my fixture plates without any binding or stripped heads. The class 12.9 alloy steel feels properly hard, and the hex socket drive seated perfectly with a 2mm Allen key.