M1.4-M8 200 mm Negro Grado 12.9 Aleación Acero Allen Cabeza Hexagonal Tapa Tornillo
M1.4 (1.4mm) / M1.6(1.6mm)/M2 (2mm)/M2.5 (2.5mm). 0.3mm (M1.4) / 0.35mm(M1.6)/0.4mm(M2)/0.5mm(M3). in M8 ， when the thread longger than 35mm, it is part thread. M3 (3mm)/M4 (4mm)/M5 (5mm)/M6 (6mm)/M8 (8mm).