Mutual Screw & Supply

5/8-11 X 2-1/4" Hex Machine Bolts | Steel Zinc Plated | Partially Threaded (100 / Pkg.)

5/8-11 X 2-1/4" Hex Machine Bolts | Steel Zinc Plated | Partially Threaded (100 - Main image
$25.2 $39.38 In stock

5/8-11 X 2-1/4" Hex Machine Bolts in Steel Zinc Plated. A hex head machine bolt with a partially threaded shank per ASME B18.2.1, providing an unthreaded grip length for bolted connections through clearance holes.

  • Partially threaded shank for a smooth bearing surface in the shear plane of bolted joints
  • Hex head for wrench-driven, high-torque installation
  • Zinc plating for everyday corrosion resistance

Specifications

  • Type: Hex Machine Bolts
  • Head Style: Hex
  • Material: Steel
  • Finish: Zinc Plated
  • Thread Size: 5/8-11
  • Length: 2-1/4"
  • Thread: Partially Threaded
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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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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)

Natalie T. ★★★★★

The partially threaded shank gave me a solid grip length for my trailer hitch mount, so the load sits tight without any slop. Zinc plating looks uniform, no flaking after a few days of rain.

Sofia L. ★★★★★

I’ve just finished tightening these bolts on a heavy equipment mount, and the hex head gave me a solid grip with a wrench. The zinc plating looks clean and should hold up against rust in my garage.

Thomas Y. ★★★★★

The partial threading is perfect for my trailer hitch build—the smooth shank gives me a solid grip before the threads engage. They cinched down evenly with a torque wrench, no wobble.