Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SD072031 REV A 1.00IN ITEM 4 found under Yoke Strainer by Haywardindl Products Inc. The National Stock Number assigned to this part is 4730014530809, 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 SD072031 REV A 1.00IN ITEM 4.