Office Chair Backrest Screws

The following is information about office chair backrest screws:

Common Screw Types: The connection between the backrest and the base of an office chair usually uses 3 - 4 large screws, mostly hexagon socket screws. These screws have good fastening and stability, can withstand significant pressure, and are suitable for connecting important components. In addition, there are medium-sized screws (625MM) used to fix the backrest to the armrests and other parts. For example, in the installation of the A235 computer chair, 4 medium-sized screws (625MM) are used to attach the armrests to the backrest. This size of screw can meet the strength requirements at the connection between the backrest and the armrests, ensuring that the armrests do not loosen easily during use.

Loosening Issues and Solutions: Loosening of the office chair backrest is a common problem, often caused by the loosening of the adjusting rod screws. When this occurs, use a Phillips screwdriver to rotate the plastic cover plate at the base connection counterclockwise, remove it to expose the metal fixing frame, and then use a wrench to tighten the 6 - 8 fixing screws one by one. During the tightening process, to prevent force deviation, operate symmetrically at 90° intervals. If the screw hole turns black or shows obvious signs of wear, this may indicate screw slippage. In this case, you can replace it with a slightly thicker screw of the same specification to increase the friction with the screw hole due to its larger diameter; or you can fill the screw hole with wood shavings, which can fill the gap between the screw and the screw hole, thereby increasing friction and solving the problem of screw loosening.

Screw Purchase Channels: If you need to purchase office chair backrest screws, you can shop on some e-commerce platforms. For example, on platforms like Alibaba, there are numerous merchants selling computer chair-related screws. Zhijiang Zhuangkang Trading Co., Ltd. sells fixed screws, bolts, nuts, and fasteners for computer chairs, office chairs, lifting and rotating chairs, backrest rocking springs, etc. Zhongshan Yuezhi Luo Hardware Store sells furniture screws such as semi-round head hexagon socket screws with washers and knurled screws (M6M8) with serrated knurled bolts for office chairs, etc. Consumers can choose the appropriate screws according to their needs.