Mutual Screw & Supply

1/2-13 X 3" Hex Machine Bolts | Steel Zinc Plated | Partially Threaded (100 / Pkg.)

1/2-13 X 3" Hex Machine Bolts | Steel Zinc Plated | Partially Threaded (100 / - Main image
$19.92 $30.64 In stock

1/2-13 X 3" 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: 1/2-13
  • Length: 3"
  • Thread: Partially Threaded
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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 (5.0 / 5 · 5 reviews)

Sophia M. ★★★★★

The unthreaded grip section on these 1/2-13 bolts made aligning them through my steel brackets much easier than fully threaded ones. They seated firmly with a wrench and the zinc coating looks clean and durable. Exactly what I needed for a solid connection.

Grace ★★★★★

I needed some bolts with a good grip length for a trailer hitch bracket, and these partially threaded 1/2-13 x 3" ones fit the bill perfectly. The threads are clean and started easily into the nuts without any binding.

Kevin ★★★★★

The zinc plating looks even and clean out of the box, and the unthreaded grip section made alignment in my fixture a breeze. Bag was packed tight, no rattling or damaged threads. These will be my go-to for any structural steel work I take on.