Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EA1-02.04 004 SR3B-02F1 found under Spring Helical Comp by Wilhelmsen Callenberg A S. The National Stock Number assigned to this part is 5360222691808, and the Federal Supply Class is 5360 Coil Flat Leaf And Wire Springs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like EA1-02.04 004 SR3B-02F1.