Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 507042 found under Spring Helical by Heligear Acquisition Co. The National Stock Number assigned to this part is 1680008580440, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 507042.