Check the listing for details. GRAINGER APPROVED 6AKD5 Fire Hose Adapter,Straight,NPTxNST 6AKD5. Condition: New. Listed at 75.04 USD. Fire Hose Adapter, Fitting Connection Type NPT x NST, Fitting Gender Female x Female, Fitting Material Brass x Brass, Fitting Movement Swivel, Fitting Shape Straight, Fitting Size 1 1/2 in x 1 1/2 in, Tightening Method Pin Lug, 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 Female, Hose Fitting B Size 1 1/2 in Brass swivel fire hose and hydrant adapters provide good strength, ductility, and corrosion resistance. They are more heat-resistant than aluminum swivel fire hose and hydrant adapters. These fittings rotate as a hose is moved to reduce kinking and strain on the hose.Fire hose and hydrant adapters are fittings that secu.