Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5273 found under Disk Clutch Vehicular by Scott Huber Essick A Co Of Figgi. The National Stock Number assigned to this part is 2520007780555, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5273.