zinc plated yellow cr3. DIN934, DIN555, DIN6915, DIN6923, JIS B 1181, ISO4032, ISO 4034, A563, A453M, A194 2H, etc. zinc plated yellow nut standards of ISO, DIN, ANSI, BS, UNI, JIS, AS, GB, etc. Our main products are DIN934, DIN555, DIN6915, DIN6923, JIS B 1181, ISO4032, ISO 4034, A563, A453M, A194 2H, etc. Besides, nonstandard products are also manufactured according to customers drawings.