Office Chair Screw Models
Office chair screw models vary depending on the brand, model, and material, with common models including M6, M8, M4, M5, as well as special specifications such as M3, M10, and M12. Here is a detailed classification description:
M6 and M8 are the most commonly used screw models for office chairs. M6 screws have a diameter of 6 millimeters and a length typically ranging from 25mm to 30mm. They are mostly used for connecting components of wooden chairs, such as fixing the seat to the legs. Metal-framed chairs rely more on M8 screws, which have a diameter of 8 millimeters and a length range of 35mm to 40mm. They are commonly found in load-bearing connections such as between the base and the backrest, and between the base and the seat frame. For example, gaming chairs often use M8x30 screws (8mm in diameter, 30mm in length) to connect the base to the backrest, M6x25 screws (6mm in diameter, 25mm in length) to connect the base to the seat frame, and M6x20 screws (6mm in diameter, 20mm in length) to connect the headrest to the back frame.
M4 and M5 screws are mostly used for fixing non-load-bearing parts. These screws are usually cross-recessed pan-head self-tapping screws or cross-recessed countersunk self-tapping screws, with lengths ranging from 10mm to 20mm. They are suitable for connecting plastic or thin metal components, such as fixing decorative panels on the chair back and connecting armrests to the chair body. Their self-tapping feature simplifies the installation process, eliminating the need for pre-drilling.
Other special screw models are designed for specific structural requirements. For example, M3 screws are commonly found in high-strength fasteners for connecting precision components; M10 screws may be used for connecting the base to the chair legs, such as the T-shaped screw M10X300MM extended rivet for office chair bases, which is suitable for scenarios requiring long-distance fixation; M12 screws are mostly used in large office chairs or specially designed load-bearing structures. In addition, internal and external hexagonal screws (such as M8*20) are also commonly found in metal frame connections requiring high torque installation.
The selection of screw models should comprehensively consider the material, load-bearing capacity, and installation method. For wooden components, M6 or M4/M5 self-tapping screws are preferred; for metal frames, M8 or larger models should be selected based on load-bearing requirements; for special structures (such as extended fixation, high-strength connections), models such as M10 and M12 should be matched. Before installation, it is recommended to refer to the product manual or measure the original screw size to ensure compatibility.
