Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9975928 found under Adapter Straight Pipe To Tube by Reliance Comm Tec Corp Lorain Pr. The National Stock Number assigned to this part is 4730002891242, 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 9975928.