Products

Our factory produces iron sawtooth geckos, also known as Christmas tree metal expansion tubes. Unlike plastic expansion tubes, these have a series of sawtooth rings around the body, resembling a Christmas tree, hence the name. They are specifically designed for use on soft walls such as lightweight bricks, hollow bricks, and aerated blocks - plastic expansion tubes cannot be tightened securely on these walls and become loose when pulled, whereas iron sawtooth geckos do not.

Our factory produces PEEK cross recessed pan head screws, made from polyetheretherketone, a high-performance special engineering plastic. These screws are rust-proof, non-conductive, non-magnetic, heat-resistant, and resistant to acids and alkalis, and weigh only about half as much as stainless steel. They can solve problems that metal screws cannot. The specifications range from M1 to M10, with cross recessed pan head and regular sizes available in stock.

Our factory produces carbon steel galvanized Single-head Hexagonal Standoff, also known as hexagonal support column or isolation column. One end is threaded, while the other end is a flat hexagonal cylinder, and the middle hexagonal shape can be gripped and tightened with a wrench. It is installed between the base plate and the upper plate, serving the functions of support and isolation. Made of carbon steel, with a surface plated with blue-white zinc, it is sufficiently rust-resistant, ensuring that indoor equipment remains rust-free for several years.

8.8 grade hex head bolts per DIN 931 / GB/T 5782, made from medium carbon steel quenched and tempered, black oxide finish. Partial thread design with long plain shank for shear applications. High tensile and yield , compatible with hex wrenches and torque tools. Ideal for heavy machinery, automotive chassis, structural steel, molds, and agricultural equipment in dry/indoor environments. Not for long-term outdoor or marine use without additional coating.

Our factory produces outer hexagonal drill tail self-tapping screws, which are made of 304 stainless steel and carbon steel galvanized. The head is outer hexagonal, and the tail is equipped with a drill bit, capable of drilling through iron sheets, aluminum plates, and color steel tiles directly without pre-drilling. With an electric drill clamped, align the position and press it in, and the drilling, tapping, and tightening are completed at once. The stainless steel ones are used outdoors and in humid environments without rusting; the carbon steel galvanized ones are cheaper and sufficient for indoor and general outdoor use.

The DIN 912 stainless steel socket head cap screw with washers are cold-drawn from 304 (A2-70) stainless steel. They integrate the hexagonal cylindrical head screws, flat washers, and spring washers together through pre-pressing, making them ready for installation upon leaving the factory. No separate washers are required, effectively preventing missed installations. The hexagonal drive torque transmission is stable. The flat washers disperse the compressive stress to protect the surface of thin plates, while the spring washers provide elastic compensation to resist vibration and loosening. The stainless steel is naturally passivated, free from electroplating for rust prevention and corrosion resistance, non-magnetic, and has a clean appearance. It is widely applicable in precision connection scenarios in automated equipment, electronics and electrical appliances, new energy, food and medical fields, as well as in outdoor humid environments.