Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4185-16 found under Sleeve Compression Tube Hose Fit by Rubbercraft Corporation Of. The National Stock Number assigned to this part is 4730001419082, 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 4185-16.