Boss Office Chair Screws
There are various types of screws used in boss office chairs, commonly including 12.9-grade black internal hexagon set screws, M8*20 black zinc 8.8-grade anti-slip internal and external hexagon screws, five-star rubber-headed screws M8 plum-blossom rubber-coated bolts, furniture screws with semi-round heads, internal hexagons, washers, and knurling, T-shaped screws for office chair bases, and flat-head internal hexagon screws, etc..
The 12.9-grade black internal hexagon set screws come in M3 and M4 sizes. The 12.9 grade represents a high strength level, and the black color may be due to special treatment, such as blackening, which serves as an anti-rust measure. The internal hexagon design facilitates installation and removal using an internal hexagon wrench. Set screws are typically used in areas requiring precise fixation and high strength, with M3 and M4 sizes chosen based on different installation spaces and load requirements.
The M820 black zinc 8.8-grade anti-slip internal and external hexagon screws also have a common strength level of 8.8. The black zinc treatment enhances the screw's anti-rust capability. The anti-slip design increases friction between the screw and the connected part, preventing loosening. The internal and external hexagon structure allows for more flexible tool selection during installation. M820 indicates that the screw has a diameter of 8 millimeters and a length of 20 millimeters.
The five-star rubber-headed screws M8 plum-blossom rubber-coated bolts not only have a unique appearance but also provide a certain degree of protection, preventing scratches on other components. The plum-blossom rubber-coated design increases comfort and convenience during installation, with the M8 size suitable for areas requiring greater connection strength.
The furniture screws with semi-round heads, internal hexagons, washers, and knurling come in M6 and M8 sizes. The semi-round head design makes the screw head fit more closely with the surface of the connected part, reducing protrusions. The washer helps disperse pressure and protect the surface of the connected part, while the knurling increases friction to prevent screw loosening.
Manufacturers specialize in producing T-shaped screws M10X300MM for office chair bases. These T-shaped screws are specifically designed for office chair bases, with M10X300MM indicating a diameter of 10 millimeters and a length of 300 millimeters, meeting the special installation requirements of office chair bases.
Flat-head internal hexagon screws and internal hexagon screws are also used. Flat-head internal hexagon screws are suitable for situations where the screw head needs to be flush with the surface of the connected part, while internal hexagon screws facilitate installation and removal.
