Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4100561 found under Connector Receptacl by Lenco Industries Inc. The National Stock Number assigned to this part is 5935011589829, 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 4100561.