Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 63C4232 found under Harness Assembly Mask Oxygen by San Antonio Air Logistics Center. The National Stock Number assigned to this part is 1660000662078, and the Federal Supply Class is 1660 Aircraft Air Conditioning Heating And Pressurizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 63C4232.