Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4TTM2-316 found under Tee Pipe To Tube by J R Douglass Company. The National Stock Number assigned to this part is 4730000604037, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4TTM2-316.