Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HBL6023 found under Boot Dust And Moisture Seal by Hubbell Ltd. The National Stock Number assigned to this part is 5340016518950, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HBL6023.