M14 x 2.00 Coarse Thread DIN 985 Class 10 Nyloc (Nylon Insert Locknut) Standard Medium Carbon Steel Zinc Plated Pk 100: Amazon.com: Industrial & Scientific
Amazon.com: MonsterBolts - M10 Nylon Insert Lock Nuts, DIN 985, Alloy Steel, Black Oxide, 10 Pack : Industrial & Scientific