Mutual Screw & Supply

M8-1.25 X 40mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | Class 8.8 Alloy Steel Thermal Black Oxide (200 / Pkg.)

M8-1.25 X 40mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | - Main image
$31.51 $51.66 In stock

These M8-1.25 x 40mm 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: M8-1.25
  • Length: 40mm
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Grade: Class 8.8
  • Drive type: Hex Socket Drive
  • Thread style: Partially Threaded
  • Thread size: M8-1.25
  • Length: 40mm
  • Measurement type: Metric
  • Pack quantity: 200 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)

Harper ★★★★★

I needed some sturdy bolts for a jig I'm building, and these M8 cap screws were the perfect length at 40mm. The black oxide coating feels durable and hasn't chipped during installation, plus the partial threading makes alignment a breeze.

Steven I. ★★★★★

I was worried about stripped heads, but these socket cap screws bit cleanly into my tooling jig steel. The black oxide finish also slid smoothly into the tapped holes without binding.

John A. ★★★★★

I needed a solid batch for a jig assembly, and the hex socket drive made installation quick with my Allen wrench. The partially threaded design gave me just the right grip without bottoming out.