Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MS27983-4 found under Post Snap Fastener by B E Aerospace Inc. The National Stock Number assigned to this part is 5325002764978, 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 MS27983-4.