Law Supply, Inc.
Web Page - Nuts
Oxygen
Fuel Gas
 
Part No. Size Internal Thread
N10 Oxygen   Aircraft "A" 3/8"-24-RH
N11 Fuel Gas Aircraft "A" 3/8"-24-LH
N20 Oxygen   Standard "B" 9/16"-18-RH
N21 Fuel Gas Standard "B" 9/16"-18-LH