Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 41F02000-001 found under Adapter Relief Valve Upper Seal by Hi Shear Corporation. The National Stock Number assigned to this part is 4920012098972, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 41F02000-001.