Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HP558108 found under Plug Machine Thread by Tactair Fluid Controls Inc. The National Stock Number assigned to this part is 5365001155461, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HP558108.