Hex head bolt screw connects triangle brackets, base plates, C channels, columns, and other steel parts in photovoltaic support systems. It is used with hex nuts, flat washers, and spring washers as a complete connection set. The advantage is load matching: 4.8 grade can handle regular bracket fixing, while 8.8 grade is selected for main support points, strong wind areas, or thicker steel sections.
Product Parameters
|
Parameter |
Specification |
|
Material |
Carbon steel, 304 stainless steel, 316 stainless steel |
|
Strength Grade |
4.8 grade or 8.8 grade for hot-dip galvanized carbon steel |
|
Diameter |
M8, M10, M12 |
|
Length |
M10×40, 50, 60, 70, 80, 90; M12×40, 50, 60, 70 mm |
|
Surface Treatment |
Hot-dip galvanized, ZAM, 304 stainless, 316 stainless |
|
Thread |
Metric coarse thread |
|
Accessories |
Hex nut, flat washer, spring washer |
Product Advantages
1) Hex head bolt screw has a standard hex head, so it can be tightened with common tools during PV steel frame assembly.
2) M10 sizes are used for many triangle connectors and C channel joints, while M12 is used for columns, bases, and heavier support points.
3) Matching nuts and washers keep the same surface finish, reducing mixed fastener problems in outdoor systems.
Main Applications
Used for PV triangle connectors, base brackets, C channels, columns, steel support frames, and utility hardware.
Suitable for outdoor bolt sets that need hot-dip galvanized or stainless finish.
Order Notes
Confirm diameter, length, grade, coating, nut quantity, washer quantity, and whether the bolts are packed by set.
Avoid ordinary black or thin electroplated bolts for outdoor PV support if the project requires long-term corrosion protection.
FAQ
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