Mutual Screw & Supply

M8-1.25 X 40mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | Class 12.9 Alloy Steel Zinc Plated (100 / Pkg.)

M8-1.25 X 40mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | - Main image
$27.91 $43.61 In stock

These M8-1.25 x 40mm 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
  • Drive: Hex Socket Drive
  • Thread style: Partially Threaded
  • Thread size: M8-1.25
  • Length: 40mm
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Zinc Plated
  • Grade: Class 12.9 CR+3
  • Drive type: Hex Socket Drive
  • Thread style: Partially Threaded
  • Thread size: M8-1.25
  • Length: 40mm
  • Measurement type: Metric
  • Pack quantity: 100 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)

Isabella ★★★★★

Went through nearly all 100 on a heavy tooling fixture and not a single stripped head or broken thread. The 12.9 alloy steel feels properly hardened, and the zinc plating has a nice even finish that slides into tapped holes without binding.

Eli N. ★★★★★

Installed these in a custom jig build and the hex socket drive made tightening a breeze—no stripped heads. The partial threading gave just the right grip without bottoming out.

Julian ★★★★★

Needed a batch of precision screws for a tooling fixture, and the 40mm length was exactly right for the job. The hex socket drive made installation quick and the zinc plating looks clean and durable.