Check the listing for details. GRAINGER APPROVED 6AKD2 Fire Hose Adapter,Straight,NPTxNST 6AKD2. Condition: New. Listed at 32.56 USD. Fire Hose Adapter, Fitting Connection Type NPT x NST, Fitting Gender Female x Male, Fitting Material Brass x Brass, Fitting Movement Rigid, Fitting Shape Straight, Fitting Size 1 1/2 in x 1 1/2 in, Tightening Method Hex, Compatible Pipe Size 1 1/2 in, Finish/Coating Rough Finish, Hose Fitting A Connection Type NPT, Hose Fitting A Gender Female, Hose Fitting A Size 1 1/2 in, Hose Fitting B Connection Type NST, Hose Fitting B Gender Male, Hose Fitting B Size 1 1/2 in, Includes Not Applicable Brass rigid fire hose and hydrant adapters provide good strength, ductility, and corrosion resistance. They are more heat-resistant than aluminum rigid fire hose and hydrant adapters. These fittings will not rotate as a hose is moved, making them less likely to loosen or break than swivel adapters.Fire h.