Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JB-0404K found under Adapter Straight Pi by Hose Connection Inc. The National Stock Number assigned to this part is 4730016439370, 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 JB-0404K.