Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CSLA4 4U found under Adapter Straight Pi by Hy Lok Usa Inc. The National Stock Number assigned to this part is 4730016304170, 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 CSLA4 4U.