Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 33040 found under Seat Helical Compression Spring by Tiffin Parts Llc. The National Stock Number assigned to this part is 5340008855731, 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 33040.