... , HDG Size:M6, M8, M10, M12 Thickness:6mm~12mm Nut, Spring NutFeatures:1) Material: steel and stainless steel (SUS304, SUS316)2 ... :Size can according to customers' drawings or samples Stainless steel Spring Nut Verified Information This information is Verified by Bureau Veritas ... , CNAS 00111Q211330R0S/3100 Manufacture and Service of Pipe Support 2011/12/07 --- 2014/12/06