Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 500-771 found under Screw Cap Hexagon H by Ampco Metal Inc. The National Stock Number assigned to this part is 5305012996602, 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 500-771.