Steel Carriage Bolt, Grade 2, Zinc Plated Finish, Square Neck, Round Head, Meets ASME B18.5/ASTM A307, 3-3/4" Length, Fully Threaded, 3/8"-16 UNC Threads (Pack of 25)

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.

• Grade 2 steel is often used in applications where toughness is the primary consideration
• Zinc plating resists corrosion and has a reflective appearance
• Square neck prevents the bolt from turning once installed, even when a nut is tightened
• Round head has a domed shape
• Meets ASME B18.5 and ASTM A307 specifications