Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ROO0961 found under Reducer Boss by Specma Ab. The National Stock Number assigned to this part is 4730016172298, 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 ROO0961.