Flat Head Carriage Bolt, with 5/8" Head, Zinc Plated
                       
Measure Flat Head Carriage Bolt length from the top of the head to the extreme end of the bolt.
 
                       
  H P A O    
Size Max Min Max Min Max Min Max Min    

1/4-20

.100

.075

.156

.125

.645

.610

.260

.245