Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 508 9 21942 found under Adapter Connector by Ab Connectors Ltd. The National Stock Number assigned to this part is 5935005579862, and the Federal Supply Class is 5935 Connectors Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 508 9 21942.