Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 168501-00220 found under Gaging Member Plug Plain Cylindr by Engineered Products Co. The National Stock Number assigned to this part is 5220013523842, and the Federal Supply Class is 5220 Inspection Gages And Precision Layout Tools. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 168501-00220.