Product Description:
1.Carriage bolts have a dome-shaped head(shallow mushroom head) and a square neck,and the square neck makes them self-locking when used in square holes.
2.Carriage bolts aren't just for carriages,these bolts can be used on wood projects,timber frame shed build,deck project,outdoor bench seat rebuild,etc.
3.The included butterfly nut increasing the transverse support surface for hand tightening without tools.

Product Specification:
Material:304 Stainless Steel.
Color:Silver.
Thread Diameter:6mm/0.23inch.
Thread Length(including the neck):35mm/1.37inch.
Bolt Head Diameter:12mm/0.47inch.
Round Head Height:3mm/0.11inch.

Package list:
10 x Carriage Bolts.
10 x M6 Wing Nuts.

Note:Due to manual measurement there may be a slight error,please understand!