5558PK Spring Nut, Nut Shape U Style Spring Nut, Nut Finish Phosphate, Nut Material Steel, Minimum Panel Thickness 0.9 mm, Maximum Panel Thickness 6 mm, Overall Width 24 mm, Overall Length 33 mm, Hole Center to Outside Edge 19 mm, System of Measurement Metric, Thread Size M10-1.50, Cage Finish Phosphate, Cage Material Steel, Clip-On Style U, Color Black, Head Height 17 mm, Package Quantity 25