Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS1237K4 found under Connector Multiple by National Aerospace Standards. The National Stock Number assigned to this part is 4730000720398, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NAS1237K4.