Image Air Brake Union Markets Transportation Jump to Section Product Options Related Products Product Options Part Number Length Tube Size Thread Thread Size Material 62NAB4 1.49" 1/4" Straight 7/16"-24 Brass 62NAB6 2.00" 3/8" Straight 17/32"-24 Brass 62NAB8 2.33" 1/2" Straight 11/16"-20 Brass 62NAB10 2.39" 5/8" Straight 13/16"-18 Brass 62NAB12 2.60" 3/4" Straight 1"-18 Brass Related Products Image Air Brake Bulkhead Unions Image Air Brake Female Connector Image Air Brake Male Connector Image Air Brake Sleeve Image Air Brake Union Elbow Image Air Brake Union Tee Image D.O.T. Air Brake Tubing