Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 74974F91 found under Tee Tube by Grandi Motori. The National Stock Number assigned to this part is 4730150685736, 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 74974F91.