Are SS304 and SUS304 of Rivet Nuts the Same Material?

Yes, they refer to the same kind of material. SUS304 is the stainless steel code in Japan's JIS standard which is imported from the US. SUS304 is the full name and the standard wording of the austenitic stainless steel, while in daily life, SUS (steel use stainless) is abbreviated as the SS304, and SS304 is further referred to as 304.

In China, the SUS304 of Japan's standard is equal to the 0Cr18Ni9 of national standard, people generally call as 304.

SS304 rivet nuts are commonly used in household appliances, architectural, vehicle parts, medical equipment, food industry and other areas.