Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9955-005-003 ITEM 7A found under Restrictor Fluid Flow by Acorn Engineering Company. The National Stock Number assigned to this part is 4730015018745, 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 9955-005-003 ITEM 7A.