Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TF50X25 4X2 found under Washer Spring Tensi by Muhr Und Bender Kg. The National Stock Number assigned to this part is 5310121488167, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TF50X25 4X2.