Mutual Screw & Supply

M24-3 X 40mm Hex Head Cap Screws | Class 10.9 Steel Plain | Fully Threaded (10 / Pkg.)

M24-3 X 40mm Hex Head Cap Screws | Class 10.9 Steel Plain | Fully Threaded (10 - Main image
$28.07 $45.28 In stock

M24-3 x 40mm hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Class 10.9 Steel Plain construction
  • Fully Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 10

Specifications

  • Thread Size: M24-3
  • Length: 40mm
  • Thread Pitch: 3mm
  • Material: Steel
  • Grade: Class 10.9
  • Finish: Plain
  • Thread Style: Fully Threaded
  • Pack Quantity: 10
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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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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)

Edward ★★★★★

The hex head grips perfectly with my socket, and the 40mm length was just right for bolting a heavy bracket to a steel frame. These 10.9 grade screws feel solid—no stripping even under a lot of torque. A straightforward, reliable fix for industrial work.

Madison D. ★★★★★

Installed these on a conveyor drive pulley—the hex head gave a solid bite with a 19mm socket, and the full threading held torque evenly across the joint. The 10.9 steel feels plenty tough for the application, and the 40mm length was just right for the flange thickness I was working with.

Robert ★★★★★

Packed these into a heavy press fixture, and the hex head grabbed the socket perfectly without any wobble. The 10.9 grade feels solid enough for daily industrial use.