Mutual Screw & Supply

M6-1 X 55mm Hex Head Cap Screws | Class 8.8 Steel Zinc Plated | Partially Threaded (300 / Pkg.)

M6-1 X 55mm Hex Head Cap Screws | Class 8.8 Steel Zinc Plated | Partially - Main image
$33.25 $49.62 In stock

M6-1 x 55mm hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Class 8.8 Steel Zinc Plated construction
  • Partially Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 300

Specifications

  • Thread Size: M6-1
  • Length: 55mm
  • Thread Pitch: 1mm
  • Material: Steel
  • Grade: Class 8.8
  • Finish: Zinc Plated CR+3
  • Thread Style: Partially Threaded
  • Pack Quantity: 300
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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)

Kevin ★★★★★

Threaded perfectly into the assembly jig I’m rebuilding—the 55mm length gave just enough grip with the nut. Zinc plating looks clean and consistent across all 300 pieces.

Sophia N. ★★★★★

Used these to replace some worn bolts on a milling machine, and the class 8.8 steel handled the clamping torque without any issues. The zinc plating looks clean and should resist rust in the shop environment.

Andrew ★★★★★

The partially threaded design made these screws much easier to start in my machine assembly project. The zinc plating has a nice, even finish and they've held up well so far.