1/4-20 x 3 1/2 Carriage Bolt Fully Threaded Black Oxide and Oil M4-0.7 The yellow zinc coating offers

The yellow zinc coating offers superior corrosion resistance

with the threads extending for approximately half of the length of the screw

Its 1 3/4-inch length provides ample grip for various materials

providing ample holding power for heavy-duty projects

and other woodworking applications

1/4-20 x 3 1/2 Carriage Bolt Fully Threaded Black Oxide and Oil M4-0.7 The yellow zinc coating offersThis 1 4 20 x 3 1 2 carriage bolt is made of steel and has a black oxide and oil finish. It is fully threaded and has a square head. Carriage bolts are often used to secure wood to metal or wood to wood. The square head prevents the bolt from turning when it is tightened. The black oxide and oil finish provides corrosion resistance.