Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2443456A found under Spacer Shock Strut by Boeing Company The. The National Stock Number assigned to this part is 1630000981922, and the Federal Supply Class is 1630 Aircraft Wheel And Brake Systems. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2443456A.