Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 631 0078 001 found under Setscrew by Honeywell Aerospace. The National Stock Number assigned to this part is 5305009360451, 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 631 0078 001.