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| Material: | Stainless Steel |
| Type: | All Kinds |
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Bolts are cylindrical threaded fasteners that are used with nuts among mechanical parts. They consist of two parts, the head and the screw rod. They need to be used in conjunction with nuts to fasten and connect two parts with through holes, and this connection form belongs to detachable connections.
Carbon Steel: It has a relatively low cost and average strength, and is suitable for some ordinary occasions where the strength requirement is not high, such as temporary fixation in building structures and the assembly of general mechanical products.
Alloy Steel: It has high strength and good toughness. After appropriate heat treatment, better mechanical properties can be obtained. It is often used for connections that bear large loads and in important parts, such as in the fields of aerospace, automobile engines, and bridge construction.
| Classification |
According to the shape of the head: hexagon head, round head, square head, countersunk head, etc.
According to the length of the thread: full thread, half thread.
According to the thread profile: coarse thread, fine thread.
According to the performance grade: 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc.
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| Hardness | Commonly used hardness indicators include Brinell hardness (HB), Rockwell hardness (HRC), and Vickers hardness (HV). |
| Surface Treatments |
Galvanizing
Nickel Plating
Blackening Treatment
Phosphating Treatment
Dacromet Treatmen
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| Length and Diameter |
Metric bolts: Common specifications include M3 - M24, etc.
Inch bolts: For example, the diameter of a 1/4-inch bolt is 1/4 inch, and the length ranges from 1/2 inch to 4 inches
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| Standardization and Certification |
ISO Standards: Such as ISO4014, ISO4017, etc.
DIN Standards: Such as DIN931, DIN933, etc.
ASTM Standards: Such as ASTM A193, ASTM A449, etc.
GB Standards: Such as GB/T 5782, GB/T 5783, etc.
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Construction Field: Foundation Fixation, Frame Assembly, Temporary Structures
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