Size: d (thread diameter) x L (thread length)
Metric thread diameter:
M1 (1 mm)/M1.2 (1.2 mm)/M1.4 (1.4 mm)/M1.6 (1.6 mm)/M2 (2 mm)/M2.5 (2.5 mm)/M3 (3 mm)/M4 (4 mm)
Metric pitch:
0.2 millimeters (M1)/0.25 millimeters (M1.2)/0.3 millimeters (M1.4)/0.35 millimeters (M1.6)/0.4 millimeters (M2)/0.45 millimeters (M2.5)/0.5 millimeters (M3)/0.7 millimeters (M4)
Thread length: 2-30mm