3/8 -16 x 1-3/4 Zinc Grade 5 Carriage Bolts CBS5-199 (100 pcs.)

Diameter: 3/8 Length: 1-3/4 Material: Steel Finish: Zinc Head Style: Carriage Thread Size: 16 (Coarse) Thread Length: Full Hardness: Grade 5 Type: Carriage Bolt Square-Depth: 7/32 Box of 100. A carriage bolt has a domed or countersunk head and the shank is topped by a short square section under the head. The square section grips into the part being fixed (typically wood) preventing the bolt from turning when the nut is tightened.