Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number VS3174-4D16 found under Bolt Close Toleranc by Alcoa Global Fasteners Inc. The National Stock Number assigned to this part is 5306015024847, 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 VS3174-4D16.