M4 M5 M6 M8 FLANGED HEXAGON NUTS (DIN 6923) ZINC PLATED HIGH TENSILE STEEL (8.8)
M4, M5, M6, M8 Flange Nut Hex in Bright Zinc Plate Class 8 - DIN 6923. An hexagon nut with incorporated flange, to DIN 6923. The flange also lessens the need to use a washer. M8 5/16" - 1.25 1 - 18 - 24 18 22.