Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 31473 found under Restrictor Fluid Flow by Western Emergency Equipment Co. The National Stock Number assigned to this part is 4730011851302, 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 31473.