Mutual Screw & Supply

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

M6-1 X 55mm Hex Head Cap Screws | Class 8.8 Steel Yellow Zinc | Fully Threaded - Main image
$28.4 $46.56 In stock

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

  • Class 8.8 Steel Yellow Zinc construction
  • Fully 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: Yellow Zinc CR+6
  • Thread Style: Fully 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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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)

Mia S. ★★★★★

The hex heads on these M6-1 x 55mm screws seat nicely in a socket wrench, and the yellow zinc coating seems durable for industrial use. A full box of 300 means I won't run out mid-project anytime soon.

Richard J. ★★★★★

I needed a full box of M6-1 x 55mm bolts for a shelving rebuild, and these fully threaded hex heads worked perfectly with my socket wrench. The class 8.8 steel feels sturdy, and each screw threaded smoothly into the pre-drilled holes.

Benjamin ★★★★★

The yellow zinc coating has held up nicely through a few weeks in a slightly damp workshop, no rust spotting at all. I’ve used about half the box on a frame assembly and the class 8.8 steel feels plenty sturdy, though the threads could be a touch smoother when starting into a blind hole. Still, for