Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6435 found under Spring by Bell And Howell Phillipsburg Co. The National Stock Number assigned to this part is 5360005379383, 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 6435.