Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3M1170C3-4AF found under Screw Close Toleran by Valley Todeco Inc. The National Stock Number assigned to this part is 5305014924568, 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 3M1170C3-4AF.