As per Din 934
Brass Hex Nuts Metric Hex Nuts Heavy Hex Nuts Full Brass Hex Nuts Brass Hexagonal Nuts Brass Metric Half Nuts Brass Hex Full Nuts Brass Hex Lock Nuts From 2 mm to 30 mm in thread size machined nuts bar turned fasteners nuts
M3 M4 M5 M6 M8 M10 m12 M16 M20 3mm 2mm 3.5mm 4mm 5mm 6mm 8mm 10mm 12mm 16mm 20mm 1/8 5/32 3/16 1/4 5/16 3/8 1/2 5/8 3/4 1 BSP UNEF UNF UNC Metric BA threaded screws fasteners fittings nuts