Mutual Screw & Supply

M20-2.5 X 320mm Hex Head Cap Screws | Class 8.8 Steel Plain | Partially Threaded (16 / Pkg.)

M20-2.5 X 320mm Hex Head Cap Screws | Class 8.8 Steel Plain | Partially - Main image
$68.69 $114.48 In stock

M20-2.5 x 320mm hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Class 8.8 Steel Plain construction
  • Partially Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 16

Specifications

  • Thread Size: M20-2.5
  • Length: 320mm
  • Thread Pitch: 2.5mm
  • Material: Steel
  • Grade: Class 8.8
  • Finish: Plain
  • Thread Style: Partially Threaded
  • Pack Quantity: 16
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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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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)

Sophia ★★★★★

The hex head on these M20 screws gives my socket wrench a firm, slip-free grip, and the partially threaded shaft made installing them into the equipment frame quick and easy. Exactly what I needed for a solid, industrial-strength fastening job.

Adam T. ★★★★★

The partially threaded design made alignment a breeze when I was bolting down a steel frame—no fighting with the threads on the first few turns. The hex head sits perfectly in a standard socket, and the class 8.8 steel feels solid without any flex.

Violet ★★★★★

Installing these on a heavy press machine and the partial thread made alignment so much easier. The 8.8 steel feels properly hardened, and they torqued down smoothly without any binding.