HEXAGON FULL NUTS TO FIT METRIC COARSE PITCH BOLTS & SCREWS A2 STAINLESS STEEL
Hexagon full nuts. M1.6 x 0.25mm pitch, 3.2mm spanner. M2 x 0.4mm pitch, 4mm spanner. M2.5 x 0.45mm pitch, 5mm spanner. M3 x 0.5mm pitch, 5.5mm spanner. M3.5 x 0.60mm pitch, 6mm spanner. M4 x 0.7mm pitch, 7mm across flats.