Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 400319 found under Adapter Straight Tube To Boss by Sabre Industries Inc. The National Stock Number assigned to this part is 4730012339002, 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 400319.