Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NBD171-4 found under Boot And Clamp Weather Seal by Rubber Products Corp. The National Stock Number assigned to this part is 5975006057702, and the Federal Supply Class is 5975 Electrical Hardware And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NBD171-4.