ART NO: BW-031 DESCRIPTION:  Hex Flange Nuts STANDARD:  DIN6923, IFI D-21, JIS B 1190 MATERIAL:  Carbon Steel, Alloy Steel, Stainless Steel GRADE:  Cl.4, 6, 8, 10, SAE J995 Gr.2, 5, 8 FINISH:  Plain, Zinc plated(Clear/Yellow), Black, HDG SIZE:  M5 - M20,  #10- 3/4"