Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D15-3 (REFRIGERANT R-134A found under Dispenser Beverage Mechanically by Grindmaster Corp. The National Stock Number assigned to this part is 7310013348434, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D15-3 (REFRIGERANT R-134A.