Mutual Screw & Supply

3/8-16 X 3-3/4" Carriage Bolts | Fully Threaded | 316 Stainless Steel (50 / Pkg.)

3/8-16 X 3-3/4" Carriage Bolts | Fully Threaded | 316 Stainless Steel (50 / - Main image
$32.15 $47.98 In stock

3/8-16 X 3-3/4" 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: 3/8-16
  • Length: 3-3/4"
  • Threads Per Inch: 16
  • Material: 316 Stainless Steel
  • Finish: Plain
  • Thread Style: Fully Threaded
  • Pack Quantity: 50
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.6 / 5 · 5 reviews)

David ★★★★★

Put these bolts on a dock repair and the 316 stainless is already holding up better than the old galvanized ones did after just one season. Fully threaded design made installation a breeze with no stripped heads.

Sofia C. ★★★★★

I built a new dock section with these bolts and the 316 stainless is already proving its worth against the saltwater. The fully threaded design made it easy to adjust the length on a few tricky spots.

Benjamin H. ★★★★★

The square neck pulled right into the wood and held tight while I tightened the nut—no need for a second wrench. The 316 stainless has a nice heft to it, and even though they're fully threaded, the rounded head looks clean against the frame.