brass thread rod size:M4-M52 standard: standard:Din,ISO,JIS& ANSI,GB,BS thread rod brass thread rodMaterial: carbon steel, stainless steel(SS304, SS316), brassSurface: plain, HDG, zinc plating, YZ, black.Size: M4-M52(3/16''-2 1/2'')Length: 1m, 2m, 3mStandard: DIN, ANSI, BS, JIS, UNIGrade: 4.8, 5.8, 6.8, 8.8,10.9 brass thread rod Din975