Hard-to-Find Fastener 014973330101 Class 10 Flange Nuts, 12mm-1.75, Piece-112 Diameter: 12mm Material: Steel Finish: Black Phosphate Driver Type: #18 Wrench Thread Type: 1.75mm (Coarse) Diameter: 12mm Material: Steel Finish: Black Phosphate Driver Type: #18 Wrench Thread Type: 1.75mm (Coarse)