Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 28-624-S found under Head Hydraulic Motor Pump by Mc Farland Pump Co Llc. The National Stock Number assigned to this part is 4320012942477, and the Federal Supply Class is 4320 Power And Hand Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 28-624-S.