Mutual Screw & Supply

5/16-18 X 1-1/4" Carriage Bolts | Fully Threaded | 316 Stainless Steel (100 / Pkg.)

5/16-18 X 1-1/4" Carriage Bolts | Fully Threaded | 316 Stainless Steel (100 / - Main image
$21.13 $28.17 In stock

5/16-18 X 1-1/4" Carriage Bolts in 316 Stainless 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
  • 316 Stainless Steel construction
  • Coarse thread for use in wood and with nuts and washers
  • Fully Threaded
  • Sold in bulk packs

Specifications

  • Thread Size: 5/16-18
  • Length: 1-1/4"
  • Threads Per Inch: 18
  • Material: 316 Stainless Steel
  • Finish: Plain
  • Thread Style: Fully Threaded
  • Pack Quantity: 100
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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)

Hannah ★★★★★

I was replacing some old hardware on my dock and these fully threaded 316 stainless steel bolts went in smoothly without any corrosion worries. The smooth rounded head gave a clean, finished look once installed.

Hazel ★★★★★

Replaced all the rusty hardware on my trailer gate with these and the square neck under the head grabbed the wood perfectly, zero spinning while I tightened the nuts. The 316 stainless finish looks great and should hold up way better than the old zinc ones did.

Jacob ★★★★★

Finished a deck repair and used these to reattach the railing posts — the 316 stainless is a relief since I'm near the coast, and the square neck locked into the pre-drilled holes without spinning. The fully threaded length let me tighten down with a washer and nut cleanly. Only wish the head sat a