Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 202139 found under Ring Retaining by Simpson Lawrence Ltd Johnson And Evi. The National Stock Number assigned to this part is 5325009115307, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 202139.