Description
1/2" 13X2 1/4" (FT) CARRIAGE BOLTS A307 GRADE A ZINC CR+3 {25/BX}
Carriage bolts fasten metal parts to metal parts or metal to wood. They have shallow semi-round heads and either a square or ribbed (ridged) neck under the head to prevent turning while the nut is fastened. Step bolts, which bolt down wood to wood surfaces, are like a carriage bolt in design. However, step bolts have a wider, lower-profile, round head. Step bolts are preferred for use on wood connections (like decking), where the larger diameter head of the step bolt will not pull through the soft wood.