Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ART 4101 2 1 8 found under Screw Tapping by European Industrial Services Ltd. The National Stock Number assigned to this part is 5305011806849, 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 ART 4101 2 1 8.