Mutual Screw & Supply

5/8-11 X 4-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Partially Threaded (25 / Pkg.)

5/8-11 X 4-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$199.77 $266.36 In stock

5/8-11 x 4-1/2" 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: 4-1/2"
  • 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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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)

Stella ★★★★★

I needed some heavy-duty bolts for my tractor’s drawbar, and these L9 alloy steel screws handled the load without any flex. The yellow zinc coating looks tougher than standard hardware store stuff.

Sofia Z. ★★★★★

The threads are clean and the hex head fits a standard socket perfectly, which made mounting them on a jig frame a quick job. These are holding up well on the assembly line so far.

Nicholas W. ★★★★★

The yellow zinc finish on these Grade L9 bolts looks great and hasn't shown any rust after a few weeks on my trailer hitch. They threaded in smoothly with a socket, and the partial threading makes them perfect for clamping heavy-duty brackets.