Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DD692JM1931A10PC21 found under Spring Helical Torsion by Otis Elevator Co. The National Stock Number assigned to this part is 5360003949994, 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 DD692JM1931A10PC21.