Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS1189E06P5B found under Screw Cap Socket He by Nor Cal Supply Coinc. The National Stock Number assigned to this part is 5305010644046, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NAS1189E06P5B.