Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SP91R found under Clamp Hose by British Standards Institution. The National Stock Number assigned to this part is 4730001379167, 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 SP91R.