Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 275Y160WS found under Gage Pressure Dial Indicating by Watts Automatic Control Valve Inc. The National Stock Number assigned to this part is 6685013978421, 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 275Y160WS.