Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS1199-4-11 found under Rivet Solid by M F Services Inc. The National Stock Number assigned to this part is 5320010174179, and the Federal Supply Class is 5320 Rivets. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NAS1199-4-11.