Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 42999-1025-101 found under Control Synchro Assembly Training Set by A B A Industries Inc. The National Stock Number assigned to this part is 6940005168593, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 42999-1025-101.