Views: 0 Author: Site Editor Publish Time: 2022-11-08 Origin: Site
Hex bolts and nuts are used in conjunction with screws and bolts to connect fastening parts, which are made up of hexagonal bolts and hexagonal nuts. Hex bolt is a type of fastener consisting of two parts: a head and screw, which is used to fasten two parts with through holes in conjunction with nuts. And hexagonal nuts are fasteners with internal threads and are used in conjunction with bolts, with internal threads, and used in conjunction with screws to transmit motion or power mechanical parts. Next, let's learn more about hex bolts and nuts.
Here is the content list:
Application
Performance grade
1. Uses of hex bolts
Hexagon bolts are the most widely used type of bolts, and hex bolts and nuts can be used for all original parts of manufacturing machinery. The A and B-grade bolts can be used for important, high-precision assembly requirements, as well as to withstand large shock, vibration, or alternating load occasions. The C-grade bolts are used for rough surfaces and less precise assemblies. The threads on the bolts are generally common threads, and the common thread bolts in West Asia have good self-locking properties and are mainly used for thin-walled parts or applications subject to shock, vibration, or alternating loads. The general bolt is made partly threaded, all-threaded bolts are mainly used for bolts with short nominal lengths and occasions requiring longer threads.
2. Hexagon nuts use
Hex bolts and nuts are nuts and bolts or screws screwed together to play a fastening role in the parts, all production and manufacturing machinery must be used for a kind of original parts. Among them, type 1 hexagonal nut are the most widely used, C-level nuts for the surface are relatively rough, not have high precision requirements of the machine, equipment, or structure; A-level and B-level nuts for the surface is relatively clean, and high precision requirements of the machine, equipment or structure. 2 type hexagonal nuts thickness m thicker, more often used for the occasion of assembly and disassembly. The thickness m of hexagonal thin nuts is thinner, primarily used in the occasion where the surface space of the connected machine parts is restricted.
1. Performance grade of hexagonal bolts
The performance grade of bolts for steel connection is divided into 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, and other 10 degrees, of which 8.8 grade and above bolts are made of low carbon alloy steel or medium carbon steel and heat treated (quenched and tempered), commonly known as high strength bolts, and the rest are commonly known as ordinary bolts. Only by understanding the grade of hex bolts can we better understand the application of hex bolts and nuts, for example.
Performance grade 4.6 bolts, the meaning of
（1）The nominal tensile strength of the bolt material reaches 400 MPa.
（2）The bolt material yield strength ratio of 0.6.
（3）The nominal yield strength of the bolt material reaches 400×0.6=240MPa.
Performance grade 10.9 high-strength bolts, whose materials, after heat treatment, can achieve.
（1）The nominal tensile strength of the bolt material up to 1000MPa grade.
（2）The bolt material has a flexural strength ratio of 0.9.
（3）The nominal yield strength of the bolt material up to 1000 × 0.9 = 900MPa grade.
2. Performance grade of hexagonal nuts
There are two grades of hexagonal nuts, one is 4.8 grade, ordinary nuts, and one is 8-grade nuts. 4.8 grade nuts refer to the nominal tensile strength of the bolt material up to 400 MPa grade, the bolt material yield strength ratio of 0.8; and the nominal yield strength of the bolt material up to 400 × 0.8 = 320 MPa nuts. And the nuts above grade 8 are divided into two types type I and type II.
The above is the relevant content about the information about hex bolts and nuts. If you are interested in hex bolts and nuts, you can contact us, our website is www. suqingfasteners.com. I look forward to your arrival very much and hope to cooperate with you.
