Mutual Screw & Supply

3/8-16 X 9-1/2" Carriage Bolts | A307 Grade A Zinc Plated Steel (50 / Pkg.)

3/8-16 X 9-1/2" Carriage Bolts | A307 Grade A Zinc Plated Steel (50 / Pkg.) - Main image
$25.34 $41.54 In stock

3/8-16 X 9-1/2" 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
  • Sold in bulk packs

Specifications

  • Thread Size: 3/8-16
  • Length: 9-1/2"
  • Threads Per Inch: 16
  • Material: A307 Grade A Zinc Plated Steel
  • Finish: Zinc Plated
  • 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 (4.8 / 5 · 5 reviews)

David ★★★★★

The square neck grabbed the wood perfectly on my fence repairs, so no spinning once I got them seated. Nine and a half inches gave me plenty of bite for sandwiching two thick boards together. These should hold up well with that zinc coating.

Natalie ★★★★★

The zinc plating looks even and hasn't shown a speck of rust after sitting in a damp shed for two weeks, and that rounded head sits flush against the wood like it was meant to be there. These 9-1/2" lengths gave me plenty of bite for sandwiching two 4x4s without any wobble.

Nicholas T. ★★★★★

I needed longer carriage bolts for a heavy timber frame, and the 9-1/2 inch length was spot on. The square neck grabbed perfectly, keeping them from spinning as I tightened the nuts.