Mutual Screw & Supply

5/8-18 X 2-3/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Partially Threaded (25 / Pkg.)

5/8-18 X 2-3/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$141.31 $188.41 In stock

5/8-18 x 2-3/4" 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: 5/8-18
  • Length: 2-3/4"
  • Threads Per Inch: 18
  • 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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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)

Emily ★★★★★

Put these on a large piece of farm equipment I’m rebuilding, and the yellow zinc coating is holding up great against the grease and dirt. The Grade L9 alloy steel felt noticeably tougher than the old bolts I pulled off. Exactly what I needed for a heavy-duty job.

Miles D. ★★★★★

Threads cut clean and the hex head sat flush without any wobble when I torqued them down on the equipment frame. The partially threaded length gave just the right grip for that 2-3/4" reach, and the L9 steel feels solid—no stripping or flexing under load. These are my new go-to for heavy assembly jo

Ryan ★★★★★

The yellow zinc coating is holding up great on these, and the fact they're partially threaded made seating them much easier in my equipment jig. Grade L9 alloy steel feels rock solid for the torque I’m putting on them.