The thread designation M20 × 1.5 meansAISO metric coarse thread, minor diameter 20 mm, depth 1.5 mmB20 threads in a length of 1.5 mmCa 20 mm bolt, 1.5 mm longDISO metric fine thread, major diameter 20 mm, pitch 1.5 mm শেয়ার ভুল রিপোর্টDR-1106