Heavy hex bolt and Teflon bolt are both types of bolts. There are many names for bolts, and everyone's name may be different. Some people call it a screw, some call it a bolt, and some call it a fastener. Although there are so many names, they all mean the same thing. They are all bolts. Bolts are the general term for fasteners. Bolts are tools that use the physics and mathematics of the oblique circular rotation and friction of objects to gradually tighten objects and parts.
Heavy-duty hex bolts are hex head bolts (partially threaded)-Grade C and hex head bolts (full thread)-Grade C. Also known as hexagon head bolts (rough) wool hexagon head bolts and black iron screws. A type of fastener consisting of a head and a screw (cylinder with external thread), which needs to be matched with a nut to fasten and connect two parts with through holes.
Features of heavy hex bolts:1. According to the force mode of the connection, there are ordinary and reamed holes. The bolts used for reaming holes should be matched with the size of the hole and used when subjected to lateral forces.2. According to the shape of the head, there are hexagonal heads, round heads, square heads, countersunk heads, and so on.
Generally, countersunk heads are used in places where the surface after connection is required to be smooth without protrusions, because the countersunk head can be screwed into the part. The head can also be screwed into the part. The tightening force of the square head can be larger, but the size is large. The hexagon head is the most commonly used.
Teflon bolt: It is a polymer compound formed by polymerization of tetrafluoroethylene, which has excellent chemical stability and corrosion resistance (it is one of the best corrosion resistance materials in the world today, except for molten sodium and liquid In addition to fluorine, it can withstand all other chemicals. It will not change when it is boiled in aqua regia. It is widely used in all kinds of anti-acid, alkali and organic solvents), tightness, high lubrication and non-stick, electrical insulation and good anti-aging resistance , Excellent temperature resistance (can work for a long time at a temperature of +250℃ to -180℃).
Features of Telfon stud bolts: sliding characteristics, electrical characteristics, wear resistance, chemical resistance/corrosion resistance, etc.