Standard of the First Machinery Industry Department of the People's Republic of ChinabZxz.net Hexagonal screw plug M8×1~M14×1.5 Marking example: D≥0.95S JB100077 Replace JB1000-67 M16×1.5~M60×2 Other V3 Hexagonal screw plug with thread diameter d18mm and pitch 1.5mm: Screw plug M18×1.5JB1000-77||tt ||Issued by the First Machinery Industry Ministry of the People's Republic of China Standardization Institute of the First Machinery Industry Ministry Implemented on May 1, 1977 Drafted by Jinan Foundry and Pressing Machinery Research Institute, etc. M10×1 M27×2 M33×2 M42×2 M48×2 M60×2 1000-77 Technical conditions are in accordance with the provisions of JB1003-77 . Total 2 pages No. 2 Nominal size Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.