The specifications of galvanized nuts are mainly divided into metric and imperial systems. Common metric specifications include M3, M4, M5, M6, M8, M10, M12, etc. For example, the across flats dimension of an M3 nut is approximately 5.5mm, and that of an M6 nut is approximately 10mm. In addition, there are high-strength specifications such as grade 8.8 and grade 10.9, as well as special-purpose specifications such as T-slot bolts.
The strength grades of galvanized nuts are primarily categorized into four levels: Grade 4, Grade 6, Grade 8, Grade 10, and Grade 12. Among them, Grades 4 and 6 are suitable for general construction and mechanical components, Grades 8 and 10 are used in high-strength demanding scenarios, and Grade 12 is reserved for special engineering projects.
detailed explanation
Level 4 and Level 6:
Grade 4 nuts are typically used in conjunction with Grade 4.8 bolts and are suitable for general construction and mechanical fittings.
The combination of Grade 6 nuts and Grade 6.8 bolts is suitable for scenarios with medium strength requirements.
Grade 8 and Grade 10:
Grade 8 nuts matched with Grade 8.8 bolts are suitable for high-strength demanding scenarios, such as bridge connections and electromechanical applications.
The combination of Grade 10 nuts and Grade 10.9 bolts is suitable for scenarios requiring higher strength.
Grade 12:
The combination of Grade 12 nuts and Grade 12.9 bolts is suitable for special projects, such as ultra-high voltage projects.