What are the specifications of T-bolts?

There are standard and non-standard specifications for T-bolts, and the standard ones are generally M4 / M5 / M6 / M8 / M10; the non-standard ones are customized ZDs;
The national standards for T-bolts are:
GB / T 2165-1991 T-slot quick release bolts for machine tool fixture parts and components (obsolete) Adjusted to JB / T 8007.2-1995 and later JB / T 8007.2-1999 instead GB / T 37-1988 T-slot bolt
There are also mechanical standards: JB / T 1709-1991 T-bolts (obsolete), replaced by JB / T 1700-2008 valve parts nut weights, bolts and plugs.
At present, the commonly used DIN186 T-shaped square neck bolts, national standard GB37, DIN188T-type double-necked bolts are made of carbon steel, stainless steel, alloy steel, etc. The specifications range from M8-M64, and the quality is better. Product hardware production-Musheng, has formed a mature process.