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Steel Carriage Bolt, Grade 2, Hot-Dipped Galvanized Finish, Square Neck, Round Head, Meets ASME B18.5/ASTM A307, 5-1/2" Length, Fully Threaded, 1/4"-20 UNC Threads (Pack of 50)

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  • The grade 2 steel carriage bolt with hot-dipped galvanized finish has a square neck and round head and meets American Society of Mechanical Engineers ASME B18.5 and ASTM A307 specifications. Grade 2 steel, composed of either low or medium carbon steel, is often used in applications where toughness is the primary consideration. The hot-dipped galvanized finish offers excellent corrosion resistance. The square neck prevents the bolt from turning once installed, even when a nut is tightened. The round head has a domed shape.

    Carriage bolts, also called round head square neck bolts, are square-necked threaded fasteners commonly used in wood fastening applications. The bolt s square neck prevents it from turning once installed using a nut.

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