Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2ZR804-PART NO.ZR804 found under Ring Lower Adjusting by Ashcroft Inc. The National Stock Number assigned to this part is 4820008262115, 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 2ZR804-PART NO.ZR804.