Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 25998-593 found under Cushion Seat Vehicular by H O Bostrom Company Inc. The National Stock Number assigned to this part is 2540011555896, and the Federal Supply Class is 2540 Vehicular Furniture And Accessories. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 25998-593.