Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NX402B1 found under by Bridgeport Fabricators Inc. The National Stock Number assigned to this part is 9390001426294, and the Federal Supply Class is 9390 Miscellaneous Fabricated Nonmetallic Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NX402B1.