Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 19HCS-104 PIECE 13 found under Bushing Sleeve by Aurora Pump. The National Stock Number assigned to this part is 3120011141048, 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 19HCS-104 PIECE 13.