Hexagon head bolts (rough), light hexagon bolts (refined), hexagon head screws, gross hexagon head bolts, black iron screws.
Cooperate with the nut, and use the threaded connection method to connect the two parts into a whole. The feature of this connection is that it is removable, that is, if the nut is unscrewed, the two parts can be separated. The outer hexagon screw is a matching nut, which is used to fasten and connect two connected parts and components with through holes. Hexagon screws are the most commonly used bolts. .
The material of high-strength bolts is different from that of ordinary bolts. High-strength bolts are generally used for permanent connections. Commonly used are M16~M30. The bolted connection of the main components of the building structure is generally connected by high-strength bolts.
The difference between ordinary bolts and high-strength bolts
Ordinary bolts can be reused, but high-strength bolts cannot be reused.
High-strength bolts are generally made of high-strength steel (45# steel (8.8s), 20MmTiB (10.9S), which are prestressed bolts. The friction type uses a torque wrench to apply the specified prestress, and the pressure-bearing type unscrews the torx head. Ordinary bolts are generally made of Made of ordinary steel (Q235), just tighten it.
Ordinary bolts are generally 4.4, 4.8, 5.6 and 8.8. High-strength bolts are generally 8.8 and 10.9, of which 10.9 is mostly.
The screw holes of ordinary bolts are not necessarily larger than those of high-strength bolts. In fact, ordinary bolt holes are relatively small.
Measure and process using precision machine tools and gages under strictly controlled environmental conditions.
High quality carbon steel (35#/45#)
It has the characteristics of long life, low heat generation, high hardness, high rigidity, low noise and high wear resistance.
Made of high-quality carbon steel, it has been precisely processed and formed, which greatly improves the user experience.
Hexagon socket head bolts refer to the cylindrical head with the shape of hexagon socket, also known as socket head cap screws, socket head cap screws, and socket head cap screws.
Hexagon hardness and performance
Generally speaking, the commonly used hexagon socket bolts are grade 4.8, grade 8.8, grade 10.9, grade 12.9, etc. Generally speaking, different grades of hexagon socket bolts are selected according to different needs, so that the performance of the bolts can be more favorable.
Hexagon screws are used in a wide range of applications, from small hardware to small electrical and electronic products. Machinery and equipment products, from cars, ships, aircraft cannons. In short, hexagonal screws are mainly used in electronics, electrical appliances, electrical, electric power, chemical industry, water conservancy, mechanical equipment, furniture and other fields.
|Material||Low carbon steel/medium carbon steel/alloy steel|
|Size||M3 – M64|
|Surface||Plain, black, galvanized, hot-dip galvanized|
|Length||10mm - 50mm，Can be customized according to customer requirements|
|Uses||Steel structure, multi-storey, high-rise steel structure, buildings, industrial buildings, highways, railways, iron towers, and other structural workshop frames|
We can provide samples for free, but do not support paying for shipping.
30 days after payment.
we are factory.
Can be packed in pallets or wooden boxes according to customer requirements.