5/16"-18 x 3" Hot Dip Galvanized Grade 2 / A307 Steel Coarse Thread Carriage Bolts
5/16-18 x 3 Carriage Bolts from Midwest are crafted from durable low-carbon steel and feature a hot-dip galvanized finish, making them ideal for exterior and treated wood applications. Their square neck design prevents the bolt from turning during installation, while the large, domed head offers a clean, finished appearance and strong holding power in wood. These carriage bolts deliver precise threading for smooth engagement with nuts, ensuring maximum holding strength and reliable connections under stress. Perfect for construction, woodworking, and outdoor projects, they provide long-lasting performance where strength and corrosion resistance are essential. Midwest’s 5/16-18 x 3 Carriage Bolts combine quality materials and thoughtful design to meet the demands of both professional builders and DIY enthusiasts.
Features
- Precise threading provides smooth engagement with nuts to provide maximum holding power, ensuring components remain firmly connected under stress
- Large, domed head provides a clean finished appearance and maximum holding power in wood
- Hot-dip galvanized coating is suitable for exterior and treated wood applications
- Manufactured from low-carbon steel for durability and strength
- Square neck prevents bolt from turning with nut and washer during installation
Specifications
- Material: Steel
- Thread Type: Coarse
- Nominal Size: 5/16 in.-18 x 3 in.
- Finish: Hot Dipped Galvanized
- Thread Size: 18
- Retail Selling Unit Piece Count: 50
- Product Line: GF
- Diameter: 5/16"
- Scale: Standard
- Drive Size: N/A
- Drive Type: None
- Length: 3"
- Country of Origin: China
- Class: BG
- Tariff Code: 7318.15.2055
- Subclass: CS