Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S9401-1B88 found under Bushing Sleeve by Honeywell Aerospace. The National Stock Number assigned to this part is 3120012036390, 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 S9401-1B88.