Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1019 ITEM 421 found under Ring Retaining by Heinrich Behrens Pumpenfabrik Gmbh. The National Stock Number assigned to this part is 5325013522706, 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 1019 ITEM 421.