Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 17C1380-4 found under Bearing Sleeve by Fleet Readiness Center East Div Department Of Navy. The National Stock Number assigned to this part is 3120014084646, 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 17C1380-4.