Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS1211B20 found under Loop Strap Fastener by Air Industries Co Inc. The National Stock Number assigned to this part is 5340010567369, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NAS1211B20.