Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 342 557 99 found under Ring Retaining by Mannesmann Demag Corp. The National Stock Number assigned to this part is 5325013850310, 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 342 557 99.