5/16" Grade 5 Carriage Bolt - CT Greenhouse Carriage Bolt, Square Neck, Round Head, Low Carbon Steel, Heat Dipped Galvanized, Size 5/16-18, Length 1 1/2 In, Head Diameter 0.688 In, Head Height... Not all fasteners are applicable for all applications so be certain to test thoroughly and get the opinion of a licensed builder or certified building or structural engineer before relying on these fasteners for any situations where failure would result in damage to property or person. Diameter 1: 5/16 inches Diameter 2: 23/32 inches Length: 1-1/2 inch Material: Steel Finish: Zinc Most of our fasteners have a light zinc plating over steel giving a more rust resistant finish. Everbilt 5/16 in. x 7 in. Zinc Plated Carriage Bolt (25-Pack) 83240 - The Home Depot We also sell coated and stainless products for additional rust resistance. TE Connectivity - Connections for Today and Tomorrow - SHINE News
