This listing is for Hexagon Full Nuts in Metric Coarse Thread of M3, M4, M6, M7, M10 in Solid Brass, and they are a DIN Standard 934.

M3

Thread Diameter - M3 (3mm)
Pitch - 0.5mm
Across The Flats (A/F) - 5.5mm
Nut Height - 2.4mm

M4
Thread Diameter - M4 (4mm)
Pitch - 0.7mm
Across The Flats (A/F) - 7mm
Nut Height - 3.2mm

M6
Thread Diameter - M6 (6mm)
Pitch - 1.0mm
Across The Flats (A/F) - 10mm
Nut Height - 5mm

M7
Thread Diameter - M7 (7mm)
Pitch - 1.0mm
Across The Flats (A/F) - 11mm
Nut Height - 5.5mm

M10
Thread Diameter - M10 (10mm)
Pitch - 1.5mm
Across The Flats (A/F) - 17mm
Nut Height - 8mm