uxcell M3 Thread Dia Dome Head 304 Stainless Steel Cap Acorn Hex Nuts 20pcs Thread Size: M3/0.12"(Female.Diameter); Product Name: Cap Nuts Material: 304 Stainless Steel (8 Grade); Weight: 13g Package Content: 20pcs x Cap Nuts; Main Color: Silver Tone Dome Head Size: 5x3mm/0.2"x0.12"(Max.D*Height); Total Height: 6mm/0.24" Hex Width: 5mm/0.2"; Fastener Type: Cap Acorn Nut