Mutual Screw & Supply

M20 X 40mm Socket Cap Screws | Hex Socket Drive | 18/8 Stainless Steel (6 / Pkg.)

M20 X 40mm Socket Cap Screws | Hex Socket Drive | 18/8 Stainless Steel (6 / - Main image
$31.04 $47.76 In stock

These M20 x 40mm socket cap screws are manufactured from 18/8 Stainless Steel, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: 18/8 Stainless Steel
  • Drive: Hex Socket Drive
  • Thread size: M20
  • Length: 40mm
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: 18/8 Stainless Steel
  • Finish: Plain
  • Grade: 18/8
  • Drive type: Hex Socket Drive
  • Thread size: M20
  • Length: 40mm
  • Measurement type: Metric
  • Pack quantity: 6 per package
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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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)

Brian N. ★★★★★

These cap screws fit perfectly into my jig setup, and the hex drive made installation torqueing much easier than I expected. The stainless steel finish feels solid and corrosion-resistant, which is exactly what I needed for outdoor machinery.

Scarlett ★★★★★

Needed some high-grade fasteners for a tooling project, and these M20x40mm screws fit perfectly. The hex socket drive made installation easy with my Allen key, and the 18/8 stainless steel feels reassuringly sturdy.

George Z. ★★★★★

Installed these in a jig for a production run and the 18/8 stainless held up perfectly—no galling after repeated adjustments. They threaded smoothly into a tapped hole without binding.