hex nuts 1.Material:carbon steel,stainless steel 2.over ten years maker ... /T, L/C at sightsample lead time : within 7 days 1) Descriptioncarbon steel nut (2)StandardDIN,ANSI/ASME,BS,AS (3 ... )Nominal sizeM3-M20 3/16--1' inch (4)Surfaceblack, yellow zinc, white zinc, white blue zinc ... , Q195LY, 45# (7)PackingPaper carton Hexagon Nuts Steel Zinc (Metric,Imperial,Unified & BA)