Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 07-551038-100 found under Adapterlampholder To Connector by Whelen Engineering Company Inc. The National Stock Number assigned to this part is 5935016863173, 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 07-551038-100.