Research & Development
Round Head Square Neck Bolts/Round Head Carriage Bolt

Carriage bolts are also descriptively called round head square neck bolts, featuring a broad, rounded head and threading along parts of the carriage bolt shanks. The square under the head keeps carriage bolt from turning as nuts are tightening. Carriage bolts are commonly used in wood and sheet metal applications.
Square-Round Head Square Neck Bolts/Square-Round Head Carriage Bolt

 

1 Round Head Square Neck Bolt / Carriage Bolt
Carriage Bolt M8-1.25×55
2 Round Head Square Neck Bolt / Carriage Bolt
Carriage Bolt #10-32×4-1/2"
Carriage Bolt #10-32×4"
3 Round Head Square Neck Bolt / Carriage Bolt
Carriage Bolt M6-1.0×45
4 Round Head Square Neck Bolt / Carriage Bolt
Carriage Bolt M12-1.75×30
5
Round Head Square Neck Bolt / Carriage Bolt
Carriage Bolt M5-0.8×75