Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 74A450623-2001 found under Seal Ring Metal by Mccay Tool And Engineering Company. The National Stock Number assigned to this part is 5330011091430, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 74A450623-2001.