Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12-303 found under Adapter Straight Pipe To Hose by Bedford Precision Parts Corp. The National Stock Number assigned to this part is 4730011111382, 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 12-303.