Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number UBT2949 found under Bolt U by Spartan Motors Chassis Inc. The National Stock Number assigned to this part is 5306015402122, 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 UBT2949.