Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 0004121-0001 found under Wiring Harness Branched by Sms Technologies Inc. The National Stock Number assigned to this part is 6150012232483, and the Federal Supply Class is 6150 Miscellaneous Electric Power And Distribution Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 0004121-0001.