Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NO PRIMARY REF14-393-8637 found under Relais Frein by This Ncage Is Used To Inform That. The National Stock Number assigned to this part is 1630143938637, 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 NO PRIMARY REF14-393-8637.