Mutual Screw & Supply

M36-4 X 320mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | Class 12.9 Alloy Steel Thermal Black Oxide

M36-4 X 320mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | Class - Main image
$78.11 $130.18 In stock

These M36-4 x 320mm 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: M36-4
  • Length: 320mm
  • 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: M36-4
  • Length: 320mm
  • 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)

Riley P. ★★★★★

Installed these in a jig for a production run, and the thermal black oxide coating held up under heavy use without galling. The 320mm length gave me just enough thread engagement for a secure hold. Exactly what I needed for a high-torque application.

Amelia ★★★★★

The hex socket drive seated perfectly on my torque wrench without any wobble, and the 320mm length gave me just enough reach for a tight jig setup. Class 12.9 alloy steel feels reassuringly solid for the machining work I’m doing.

Chloe W. ★★★★★

Installed these in a jig for a repetitive drilling setup and they've held torque perfectly through hundreds of cycles. The black oxide finish on an M36-4 thread is exactly what I needed for corrosion resistance in a shop environment.