Fasteners

Screws are critical fasteners in mechanical connections, and their basic structure can be divided into four parts: the head, the shank, the thread, and the tip. Types of screws can be classified based on their use, including self-tapping screws (tapping screw or self-threading screws), machine screws, wood screws, metal screws, and set screws. Common screw head types include pan head screws and hex screws. The materials used for screws are usually metallic, such as carbon steel, stainless steel, and alloy steel, as well as non-metallic materials like wood and plastic. When purchasing screws, one should consider the size, thread type, and coating; during installation, it's important to use a screwdriver for pre-drilling, torque control, and maintaining cleanliness. Regular checks and replacements can ensure the longevity of screw fasteners. By selecting and using screws properly, the stability and safety of mechanical connections can be effectively enhanced.

A wide selection of bolts including Hex Bolts/ U Bolts/ Expansion Bolts/ Knurled Bolts/Swing Bolts

A SEMS screw is a combination fastener in which a screw and washer are pre-assembled into one integrated unit. It is classified as a high-efficiency assembly-type screw product. As a professional global SEMS screws manufacturer and supplier, JLCMC provides a wide range of SEMS screw and washer assembly solutions, including double washer structural designs. These designs effectively prevent washer detachment, reduce manual operation steps, and significantly improve assembly efficiency and stability. They are especially suitable for mass production environments. With stable production capacity and a well-established supply chain system, our company supports continuous delivery of large-volume orders and provides customers with high-quality, reliable fastener solutions. Product materials include high-strength carbon steel and stainless steel, supporting metric standard specifications and relevant industry standards. Head types include hex head, pan head, socket head cap, and other variations. These products are widely used in machine assembly, electronic product fastening, and metal structure connections. The main industries served include electronics and electrical appliances, automotive components, telecommunications equipment, industrial equipment manufacturing, and automation machinery.

A nut is a fastener with an internal thread that is used with a mating bolt that is of the same size. We provide various types of nuts, including hex nuts, cap nuts, flange nuts, locknuts, and wing nuts.

Washers are common ring-shaped metal disc components in the industrial field, with main types including flat washers, lock washers, spring washers, and tab washers. Their shapes can be flat, spring-like, or circular. The primary functions of washers include distributing pressure, reducing friction, sealing against leaks, and separating components. Washers can be used in conjunction with fasteners such as bolts, screws, and nuts. At JLCMC, you can purchase a variety of high-precision, high-quality washers that meet DIN, GB, ISO, and RoHS standards, tailored to your needs.

Our Threaded Inserts come in Standard Types for general applications, Self-Tapping Slotted Types for quick and easy installation, Pin Types for added security in thin or soft materials, and Self-Tapping 307 Standard Types for robust threading in metal. We also offer Self-Tapping 308 Reinforced Types for high-strength applications. Made from durable materials, they ensure reliable thread formation and resistance to stripping.Widely used in plastics, metals, and composite materials, they simplify assembly processes and enhance product durability. Shop for your Threaded Inserts at JLCMC and experience a swift, cost-effective, and high-quality purchasing process.

Purchase safer shackles, eye bolts, eye nuts, hoist rings, and lifting points at JLCMC, commonly used lifting and rigging hardware, enjoying cost-effective prices and superior precision quality. These components, such as shackles, eye bolts, eye nuts, hoist rings, and lifting points, are essential for lifting, hoisting, and securing loads, making them indispensable in construction, industrial operations, and logistics. With high-strength materials and precision engineering, JLCMC ensures the safety and efficiency of lifting and rigging hardware during operations.

Retaining rings, also known as circlips, are fasteners used in mechanical assembly, primarily to restrict the axial movement of parts on shafts or within holes. They are categorized into external retaining rings (for shafts), internal retaining rings (for holes), spiral retaining rings, and E-type retaining rings, among others. Materials include carbon steel, stainless steel, and alloy steel, while surface treatments such as black oxide, zinc plating, or nickel plating can enhance corrosion resistance and wear resistance. Retaining rings are widely used in industries such as automotive, electronics, and industrial machinery, and their installation typically requires specialized tools like retaining ring pliers or spiral ring installation tools.

A stopper bolt is a specialized fastener engineered to act as a mechanical limit within machinery or equipment, designed to control movement and ensure parts stop precisely where needed. This functionality helps maintain the integrity and safety of the system, providing a reliable solution to prevent over-travel, misalignment, and potential damage. By doing so, stopper bolts play a critical role in enhancing operational safety, extending equipment lifespan, and ensuring smooth, predictable motion in mechanical systems. Because of these benefits, stopper bolts are widely applied across industries such as automotive, industrial machinery, conveyor systems, doors, and automated equipment. Anywhere precise positioning or controlled movement is essential, stopper bolts help maintain consistent performance, reduce wear, and lower maintenance risks. To meet these diverse needs, stopper bolts are manufactured in several types. Fixed stopper bolts are installed permanently to provide a consistent mechanical stop, while adjustable stopper bolts allow fine-tuning of the stopping position for varying operational requirements. In dynamic applications, spring-loaded stopper bolts incorporate a cushioning effect to absorb impact while controlling movement. Additionally, custom-designed stopper bolts can be tailored to meet unique specifications or specialized industry demands. JLCMC stopper bolts stand out in this field by combining precision engineering with strict adherence to industrial standards, offering superior strength, corrosion resistance, and reliable performance under demanding conditions. By choosing JLCMC, customers gain durable, high-quality stopper bolts that enhance safety, efficiency, and longevity across their mechanical systems.

A stud is a type of fastener that has no head but is threaded on both ends.

A product or workpiece molded by resin processing.

Positioning Bead/Locating Bead

Rivets are permanent mechanical fasteners used in riveting applications across industries including furniture, metal fabrication, machinery, marine repair, and construction. Common types include blind rivets (pop rivets), solid rivets, threaded rivets, hollow rivets, grooved rivets, flush rivets, and split rivets, available in aluminum, stainless steel, carbon steel, and plastic to meet various strength and corrosion resistance requirements. Installation methods vary from simple one-sided rivet gun use for blind rivets to two-sided hammering or pressing rivets (compression riveting) for solid rivets, with flush rivets requiring special countersinking. Removal is easily done by drilling or with extraction tools. Offering multiple head styles (round, flat, countersunk, large flange), these versatile fasteners provide both structural integrity and clean finishes, making them ideal for professionals and DIYers using manual or power riveting tools.