Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SR-0632-AB-16 found under Screw Cap Socket He by A P M Hexseal Corporation. The National Stock Number assigned to this part is 5305000639095, 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 SR-0632-AB-16.