Nut, Used for Switch, Relay, or Thermostats and so on, RoHS ... , DIN1587, DIN439, A194, A563, and ANSI B18.2.2Grades: 2, 5, 6, 8, A194 2H, A194 4, and A563 DHSurface: plain ... produce according to standard as well as non-standard ones Hex Nut with Phosphate, Hot Dip Galvanizing, and Teflon Surface