Mutual Screw & Supply

3/8-16 X 1-3/4" Carriage Bolts | Fully Threaded | A307 Grade A Zinc Plated Steel (150 / Pkg.)

3/8-16 X 1-3/4" Carriage Bolts | Fully Threaded | A307 Grade A Zinc Plated - Main image
$12.4 $19.38 In stock

3/8-16 X 1-3/4" Carriage Bolts in A307 Grade A Zinc Plated Steel. Carriage bolts feature a smooth, rounded head with a square neck underneath that pulls into the material to prevent the bolt from turning during installation, making them ideal for wood-to-wood and wood-to-metal connections.

  • Domed head with square anti-rotation neck
  • A307 Grade A Zinc Plated Steel construction
  • Coarse thread for use in wood and with nuts and washers
  • Fully Threaded
  • Sold in bulk packs

Specifications

  • Thread Size: 3/8-16
  • Length: 1-3/4"
  • Threads Per Inch: 16
  • Material: A307 Grade A Zinc Plated Steel
  • Finish: Zinc Plated
  • Thread Style: Fully Threaded
  • Pack Quantity: 75
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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)

Miles ★★★★★

The zinc plating is holding up nicely after a week of outdoor use on a pergola, and the fully threaded shaft made driving them through pressure-treated lumber a breeze. Bag was packed tight, all 150 counted straight out of the box.

Sofia R. ★★★★★

The square neck under the head grabbed the wood instantly when I tightened them, so no spinning or cursing with a wrench. Five dozen went into the swing set frame and the zinc finish looks clean even after a couple of rainy weekends.

Eli S. ★★★★★

The square neck grabbed perfectly into the wood on my trailer deck, so I didn't have to fight with a wrench to keep them from spinning. These are solid zinc-plated bolts for the price, and the full threading made fastening the 1-3/4" length a breeze. Just what I needed for the job.