Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MS27981-3B found under Socket Snap Fastener by Aerospace Industries Llc. The National Stock Number assigned to this part is 5325002764966, 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 MS27981-3B.