Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SK-3672 ITEM 71 found under Semiconductor Devic by Insinger Machine Company The. The National Stock Number assigned to this part is 5961014459072, and the Federal Supply Class is 5961 Semiconductor Devices And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SK-3672 ITEM 71.