Mutual Screw & Supply

5/16-18 X 1-1/4" Hex Machine Bolts | Steel Zinc Plated | Partially Threaded (1000 / Pkg.)

5/16-18 X 1-1/4" Hex Machine Bolts | Steel Zinc Plated | Partially Threaded - Main image
$42.5 $57.43 In stock

5/16-18 X 1-1/4" 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: 5/16-18
  • Length: 1-1/4"
  • 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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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)

Christopher I. ★★★★★

I was worried about zinc plating flaking off, but these bolts have a nice, consistent finish that held up perfectly during assembly. The partially threaded shank gave me just the right grip length for my steel brackets. Really solid hardware for the price.

Joshua ★★★★★

These bolts fit perfectly in my trailer hitch bracket, and the unthreaded grip section made alignment much easier during assembly. The whole bag was consistent in length and thread quality.

Jacob ★★★★★

The zinc plating on these looks really consistent, no rough spots. I needed them for a piece of equipment where the grip length matters, and the partially threaded shank works perfectly for that. These are solid bolts for the price.