Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HBL400FBK found under Connectorplugelectrical by Hubbell Ltd. The National Stock Number assigned to this part is 5935016746693, 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 HBL400FBK.