M12 X 1.25MM 1.5MM FINE PITCH NYLOC NUTS NYLON INSERT LOCK NUT BZP ZINC PLATED
Zinc Plated BZP. These are a DIN 985. Further details are as follows 'T Type' Nyloc Nut Across the Flats (A/F) - 19mm. 'T Type' Nyloc Nut Height - 12mm. P Type Nyloc Nuts. T Type Nyloc Nuts. Nyloc Nuts.