Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 134-166-46 found under Tube Air Blast Uppe by Tiffin Metal Products Co. The National Stock Number assigned to this part is 1730007365790, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 134-166-46.