Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3140087-21 found under Screw Self Drilling by N D Industries. The National Stock Number assigned to this part is 5305014497363, 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 3140087-21.