Mutual Screw & Supply

M12-1.25 X 55mm Hex Head Cap Screws | Class 8.8 Steel Zinc Plated | Fully Threaded (50 / Pkg.)

M12-1.25 X 55mm Hex Head Cap Screws | Class 8.8 Steel Zinc Plated | Fully - Main image
$23.63 $39.39 In stock

M12-1.25 x 55mm hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Class 8.8 Steel Zinc Plated construction
  • Fully Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 50

Specifications

  • Thread Size: M12-1.25
  • Length: 55mm
  • Thread Pitch: 1.25mm
  • Material: Steel
  • Grade: Class 8.8
  • Finish: Zinc Plated CR+3
  • Thread Style: Fully Threaded
  • Pack Quantity: 50
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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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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)

Madison W. ★★★★★

The zinc plating is a nice touch—it feels smooth and consistent across all 50 bolts, which I wasn't expecting at this price. I used these on a trailer hitch build and the class 8.8 rating gives me confidence they'll hold up under real strain.

Charlotte S. ★★★★★

The wide hex head on these M12 bolts gives my socket a solid grip, and the zinc plating feels smooth and uniform across every single screw in the pack. Used a full 50 on a heavy equipment frame without any stripped threads or warping. Exactly what I needed for a secure, long-lasting hold.

Charlotte P. ★★★★★

Bought these for a machinery frame I’m welding up, and the hex heads seat cleanly with a socket wrench, no stripping even under decent torque. The class 8.8 steel feels solid, and the zinc plating’s got a nice uniform shine that’s already surviving my garage’s damp air. Fifty pieces in the pack mean