Mutual Screw & Supply

M6-1 X 55mm Socket Cap Screws | Flat Head Hex Socket Drive | Partially Threaded | Class 12.9 Alloy Steel Zinc Plated (200 / Pkg.)

M6-1 X 55mm Socket Cap Screws | Flat Head Hex Socket Drive | Partially Threaded - Main image
$42.7 $59.3 In stock

These M6-1 x 55mm 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: Partially Threaded
  • Thread size: M6-1
  • Length: 55mm
  • 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: Partially Threaded
  • Thread size: M6-1
  • Length: 55mm
  • Measurement type: Metric
  • Pack quantity: 200 per package
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Standard Shipping · United States: $0.00

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)

William ★★★★★

The hex drive on these M6-1 x 55mm screws fits my Allen key perfectly, and the zinc plating looks clean and even across all 200 pieces. I used them to secure a jig on my drill press, and the Class 12.9 alloy steel feels noticeably tougher than standard hardware. Really glad to have found a bulk pack

Olivia ★★★★★

Finally found some M6 bolts with enough grip length for a custom jig I’m building—these threaded smoothly into tapped holes without any binding. The zinc plating looks uniform and should hold up fine in my shop.

Alexander ★★★★★

The partial threading on these M6-1 x 55mm screws is exactly what I needed for clamping down a jig without bottoming out, and the zinc plating looks clean and uniform across all 200 pieces. They cinched up tight with a hex key and held firm during a full day of milling.