Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HCS-0-003SS found under Setscrew by Carleton Technologies Inc. The National Stock Number assigned to this part is 5305012846724, 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 HCS-0-003SS.