Mutual Screw & Supply

7/8-9 X 3" Hex Head Cap Screws | Grade 8 Steel Zinc Plated | Partially Threaded (60 / Pkg.)

7/8-9 X 3" Hex Head Cap Screws | Grade 8 Steel Zinc Plated | Partially Threaded - Main image
$116.83 $185.44 In stock

7/8-9 x 3" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade 8 Steel Zinc Plated construction
  • Partially Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 60

Specifications

  • Thread Size: 7/8-9
  • Length: 3"
  • Threads Per Inch: 9
  • Material: Steel
  • Grade: Grade 8
  • Finish: Zinc Plated
  • Thread Style: Partially Threaded
  • Pack Quantity: 60
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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 (4.6 / 5 · 5 reviews)

Jacob S. ★★★★★

Installed these on a jig that sees heavy vibration and the grade 8 steel threads held tight without any stripping. The partially threaded design made alignment quicker too.

Isabella E. ★★★★★

Used these on a heavy-duty jig I’m building, and the partially threaded design grabbed perfectly without slipping. The zinc plating feels solid and hasn’t shown any rust after a few weeks in a damp shop.

Kevin ★★★★★

Finally, a bold fastener that handles high-torque jobs without stripping—the partially threaded shank gave me just the right grip on my press frame. These Grade 8 bolts came well-packed and the zinc plating looks clean, no rust worries.