M3-0.5 / 3mm - Metric Nylon Insert Hex Lock Nut DIN 985 - A2-70/304 / 18-8 Stainless Steel - MonsterBolts (50) Metric Size : M3 / 3mm Type : Nylon Insert Lock Nut Specification : DIN 985 Thread Pitch : 0.5mm - Coarse Standard Thread Wrench Size : 6mm