Mutual Screw & Supply

5/8-18 X 2-1/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Partially Threaded (25 / Pkg.)

5/8-18 X 2-1/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$116.94 $160.19 In stock

5/8-18 x 2-1/4" 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: 2-1/4"
  • 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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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 (4.6 / 5 · 5 reviews)

Steven ★★★★★

Finally got a chance to torque these down on a heavy press frame — the Grade L9 alloy feels noticeably tougher than the usual Grade 5 hardware I've been using. The yellow zinc finish looks clean and should hold up well in my shop environment.

Sebastian N. ★★★★★

The partial threading on these 5/8-18 cap screws makes them perfect for my equipment assembly projects, and the hex head grabs the socket securely. Worked great for securing a heavy-duty bracket without stripping.

Joshua R. ★★★★★

The partially threaded design made alignment a breeze when I was torquing these into a heavy equipment mount. The Grade L9 alloy took the full 120 ft-lbs without a hint of stripping, and the hex heads seated perfectly with a socket. Solid set of 25 for the price.