Thread size Pitch Head dia mm M Thickness M 2 0.40 4.0 1.6 M 2.5 0.45 5.0 2.0 M 3 0.50 5.5 2.4 M 3.5 0.60 6.0 2.8 M 4 0.70 7.0 3.2 M 5 0.80 8.0 4.0 M 6 1.00 10.0 5.0 M 7 1.00 11.0 5.5 M 8 1.5 13.0 6.5 M 10 1.50 17.0 8.0 M 12 1.75 19.0 10.0 M 14 2.00 22.0 11.0 M 16 2.00 24.0 13.0 M 18 2.50 27.0 15.0 M 20 2.50 30,0 16.0 M 22 2.50 32.0 18.0 M 24 3.00 36.0 19.0 M 27 3.00 41.0 22.0 M 30 3.50 46.0 24.0 M 33 3.50 50.0 26.0 M 36 4.00 55.0 29.0 Material: Stainless Steel 304 Stainless Steel 316 A2 A4 Brass CDA 360