Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS1831B5C60 found under Standoff Threaded S by National Aerospace Standards. The National Stock Number assigned to this part is 5340012384404, 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 NAS1831B5C60.