Mutual Screw & Supply

5/8-18 X 8-1/2" Hex Head Cap Screws | USA Made | Grade 8 Steel Yellow Zinc (50 / Pkg.)

5/8-18 X 8-1/2" Hex Head Cap Screws | USA Made | Grade 8 Steel Yellow Zinc (50 - Main image
$396.27 $649.63 In stock

5/8-18 x 8-1/2" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade 8 Steel Yellow Zinc construction
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 50

Specifications

  • Thread Size: 5/8-18
  • Length: 8-1/2"
  • Threads Per Inch: 18
  • Material: Steel
  • Grade: Grade 8
  • Finish: Yellow Zinc CR+3
  • Pack Quantity: 50
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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 (4.6 / 5 · 5 reviews)

Abigail ★★★★★

The heads on these are nice and tall, so my socket grabs them without any wobble even after a few uses. Grade 8 yellow zinc looks sharp on the equipment and they haven't shown a speck of rust yet. Solid choice if you need heavy-duty fasteners that just work.

Christopher W. ★★★★★

I needed some heavy-duty bolts for a large press repair and these Grade 8s held up perfectly under the torque. The yellow zinc coating looks uniform and should resist rust well.

Michael D. ★★★★★

Just got these 5/8-18 cap screws for a heavy equipment repair, and the hex heads fit my socket perfectly. The yellow zinc coating looks solid and should hold up well. Glad I picked up the 50-pack since I always seem to need more than expected.