Nylon Lock Nut - SODIAL(R) M6x1mm Metric Stainless Steel Nylon Insert Lock Hex Nuts 30 Pcs Product Name: Nylon Lock Nut Female Thread Dia: M6/4.9mm Thickness: 4mm/ 0.16" Width Across Flats: 10mm/0.4" TotalThickness: 6mm/0.24"; Pitch: 1mm/0.04"