Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 017025-4 found under Tower Assembly Righ by Big Horn Equipment Company Inc. The National Stock Number assigned to this part is 2590014398389, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 017025-4.