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Steel Carriage Bolt, Grade 2, Zinc Plated Finish, Square Neck, Round Head, Meets ASME B18.5/ASTM A307, 2-1/2" Length, Fully Threaded, 5/16"-18 UNC Threads (Pack of 100)
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About Steel Carriage Bolt, Grade 2, Zinc Plated
The grade 2 steel carriage bolt with zinc plated finish has a square neck and a 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 zinc plating offers corrosion resistance and has a reflective appearance. 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.
