Mutual Screw & Supply

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

5/8-11 X 4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | - Main image
$149.65 $226.74 In stock

5/8-11 x 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: 5/8-11
  • Length: 4"
  • 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 (4.4 / 5 · 5 reviews)

Penelope ★★★★★

The partial threads grabbed perfectly when I torqued them into a jig fixture—no galling, and the yellow zinc finish wipes clean after oily jobs. Went through a whole box on conveyor rebuilds and not a single stripped head.

Brian ★★★★★

Installed these on a punch press this morning and the 5/8-11 threads seated perfectly in the tapped hole. The yellow zinc finish looks uniform and should resist corrosion well in the shop.

David P. ★★★★★

These grade L9 bolts hold a serious torque—my press hasn’t budged since I swapped out the old hardware. The hex heads grab a socket perfectly, and the yellow zinc finish is holding up well in a semi-damp shop.