Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Z4000D1X2018R found under Gage Pressure Dial Indicating by Uniweld Products Inc. The National Stock Number assigned to this part is 6685001175508, 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 Z4000D1X2018R.