Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AA-R-211 TY2 SZ4GRA B found under Refrigerator Freezer Mechanical by General Services Administration. The National Stock Number assigned to this part is 4110000055290, and the Federal Supply Class is 4110 Refrigeration Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AA-R-211 TY2 SZ4GRA B.