Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SK-2670 ITEM 4 found under Drive Mech Assy by Insinger Machine Company The. The National Stock Number assigned to this part is 7320015286797, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SK-2670 ITEM 4.