What are the classifications of bolts?

1. According to the thread type of the stud, bolts can be divided into inch thread bolts, fine thread bolts and coarse thread bolts.

2.According to the shape and purpose of the bolt head, bolts can be divided into square head bolts, countersunk head bolts, hexagon head bolts, semicircular head bolts, etc. Under this classification condition, bolts can be divided into many types. Interested readers can learn more about them.

3. According to the mechanical performance characteristics of bolts after production, they can be divided into anti-loosening bolts, high-precision bolts and high-strength bolts, etc.

4. There are more than 10 grade classifications for bolt manufacturing strength, and grade 8.8 is the watershed for bolt strength grade. Bolts above grade 8.8, including grade 8.8, are generally made of low-carbon alloy steel or medium-carbon steel, and the main processing technology is quenching and tempering, so these bolts are also collectively referred to as high-strength bolts. Bolts below grade 8.8 are ordinary bolts.