Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 841-507 found under Fastener by Aqua Chem Inc. The National Stock Number assigned to this part is 5325008982813, 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 841-507.