The specifications and models of guardrail bolts and nuts mainly include M6 series and M16 series.
For the M6 series, the common specifications are M620, M625, M632, M635, M640, M645, M650, M655, M660, M670, M680, M690. These specifications are mainly used for guardrail fixing in power facilities, railway facilities and other fields.
For the M16 series, the common specifications include M16×35mm, M16×40mm, M16×45mm, M16×50mm, M16×130mm, M16×150mm, M16×170mm, M16×180mm. In addition, there are also specifications such as M20×160mm, M20×180mm. Bolts of these specifications are used for splicing and connection of corrugated guardrail panels, such as the connection between guardrail panels and brackets, the connection between guardrail panels and anti-blocking blocks, and the connection between three corrugated panels and columns.
In addition, there are some special specifications, such as S-type anti-theft screws, which have force points only in the positive direction and cannot be removed once installed. They are mainly used for guardrail fixing in power facilities, railway facilities and other fields. Common anti-collision grade specifications for corrugated guardrails also include specific dimensions of square tube columns, aircraft wing block blocks, beams, sleeves, upper columns and other components. These components are used together with M16 series bolts to form a complete corrugated guardrail system.