Mutual Screw & Supply

5/8-11 X 5-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Partially Threaded (25 / Pkg.)

5/8-11 X 5-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$231.47 $317.08 In stock

5/8-11 x 5-1/2" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade L9 Alloy Steel Yellow Zinc construction
  • Partially Threaded
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 25

Specifications

  • Thread Size: 5/8-11
  • Length: 5-1/2"
  • Threads Per Inch: 11
  • Material: Alloy Steel
  • Grade: Grade L9
  • Finish: Yellow Zinc CR+3
  • Thread Style: Partially Threaded
  • Pack Quantity: 25
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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)

Timothy ★★★★★

I needed some serious bolts for a heavy equipment repair, and these Grade L9 cap screws held up perfectly under a lot of torque. The yellow zinc finish looks good and seems durable, and the partial threading made installation a breeze.

Evelyn P. ★★★★★

These bolts threaded perfectly into my press frame without any binding, which I’ve had trouble with using lesser-grade hardware. The yellow zinc finish hasn’t shown any rust after a few weeks in a semi-damp shop.

Ryan I. ★★★★★

Used them to bolt down a jig table at the shop and they seated perfectly with a socket, no galling on the threads at all. The yellow zinc finish is holding up fine so far, and the partial threading kept everything snug without bottoming out. Solid pick if you need heavy-duty fasteners that don't fig