Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 53628 found under Inverted Nut Tube Coupling by Am General Llc. The National Stock Number assigned to this part is 4730000137401, 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 53628.