Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 91170 found under Bushing Sleeve by Curtiss Wright Electro Mechanical Corporation Dba Steam And Air Solutions Div Cu. The National Stock Number assigned to this part is 3120005918669, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 91170.