Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M5X12DIN933-8.8B3B found under Bolt by Zelenda Machine And Tools Corp. The National Stock Number assigned to this part is 5306012178920, and the Federal Supply Class is 5306 Bolts. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M5X12DIN933-8.8B3B.