Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number OTU-1 2MPTX1 2SAE found under Head And Disk Safety Pressure Re by Hoosier Industrial Supply Inc. The National Stock Number assigned to this part is 4820011834254, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like OTU-1 2MPTX1 2SAE.