Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 525 0004 01 found under Setscrew by Granger Associates. The National Stock Number assigned to this part is 5305012697819, 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 525 0004 01.