Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Y10-S8-A12-L found under Screw Machine by W M Berg Inc. The National Stock Number assigned to this part is 5305014967640, 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 Y10-S8-A12-L.