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Fasteners such as bolts, nuts, screws, and washers are essential components used to securely join structural steel profiles and other materials. Manufactured from high-quality materials including carbon steel, stainless steel, and alloy steel, these fasteners are designed to provide superior strength, durability, and resistance to corrosion in various industrial and construction applications.
Available in a wide range of sizes, grades, and specifications, fasteners ensure the stability and safety of structural assemblies. Their precision engineering allows for easy installation and reliable performance under heavy loads, making them indispensable in sectors like construction, manufacturing, automotive, and infrastructure development.
Size: M5 to M50
Types:
Stainless Steel Grades: ASTM A193 202, 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H, 317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
Range: M02 to M30
Duplex Steel Grades: ASTM A182 UNS F44, F45, F51, F53, F55, F60, F61
Size: M10 to M100
Super Duplex Grades: ASTM A193 / ASTM A194 UNS NO. S32750 / S32760 / S32950
Range: M02 to M33
Carbon Steel Grades: ASTM / ASME A105, A53 GR B, A106GR B, API 5L GRADE B, API 5L GRX42 / 46 / 52 / 56 / 60 / 65 / 70, A333 GR 1 / GR 3 / GR 6, A/SA 672 GR 8C60 / C70
Range: M02 to M33
Alloy Steel Grades: ASTM / ASME A193, A194 GR F5, F9, F11, F12, F22, F91
Range: M02 to M33
Nickel Alloy Grades: ASTM / ASME SB 163 / 165 / 167 / 464 / 517 / 619 / 622 / 626 Nickel 200 (N02200), Nickel 201 (N02201), Nickel 205 (N02205)
Range: M10 to M100
Titanium Grades: GR 1, GR-2, GR-3, GR-4, GR-5, GR-7
Range: M4 to M100
Copper Nickel Grades: 90/10 (C70600), 70/30 (C71500), UNS C71640
Nuts are essential fasteners used in conjunction with bolts, screws, and studs to securely hold components together in a wide range of mechanical and structural applications. Designed with an internally threaded hole, nuts are tightened onto a mating bolt to form a secure joint that can withstand vibration, tension, and compression forces. Available in various shapes, sizes, and materials, they are selected based on load requirements, environmental exposure, and assembly methods.
Nuts are widely used across industries including construction, automotive, aerospace, marine, electrical, and general manufacturing. Whether used in heavy-duty structural applications or light-duty assemblies, selecting the right type and grade of nut is critical to ensuring long-term joint integrity and safety. Common types of nuts include hex nuts, lock nuts, flange nuts, wing nuts, dome nuts, and coupling nuts. Each type serves a specific purpose — for example, lock nuts resist loosening due to vibration, while wing nuts can be hand-tightened without tools.
Bolts are fundamental mechanical fasteners used to assemble and secure materials through pre-drilled holes. They consist of a head and a threaded shaft and are typically used with a corresponding nut or tapped hole to form a strong, removable joint. Available in various types such as hex bolts, carriage bolts, anchor bolts, and eye bolts, each serves specific purposes across structural, mechanical, and industrial applications.
Manufactured from materials like stainless steel, carbon steel, alloy steel, and titanium, bolts are selected based on their tensile strength, corrosion resistance, and environmental suitability. They are used extensively in construction, automotive, machinery, aerospace, and marine sectors to ensure durable and secure connections under dynamic loads and harsh conditions.
Screws are versatile mechanical fasteners widely used to join materials by embedding themselves into the surface through rotational force. Unlike bolts, screws typically do not require a nut and instead rely on their threads to grip the material, making them ideal for wood, metal, plastic, and masonry applications. Their self-locking capabilities make them a preferred choice in both temporary and permanent assemblies.
Common types of screws include wood screws, machine screws, self-tapping screws, sheet metal screws, and drywall screws. They are manufactured in various head styles (such as flat, pan, round, and hex) and drive types (like Phillips, slotted, Torx, and Allen) to accommodate specific installation requirements. Screws are available in a range of materials and coatings, including stainless steel, brass, and zinc-plated steel, to enhance durability and corrosion resistance.
Washers are thin, disk-shaped components used in conjunction with bolts, screws, and nuts to distribute load, prevent damage to surfaces, and reduce the risk of loosening due to vibration. Positioned between the fastener head or nut and the surface of the connected material, washers play a vital role in enhancing the reliability and longevity of mechanical assemblies.
There are several types of washers, including flat washers for load distribution, spring (or split lock) washers for vibration resistance, and sealing washers for fluid-tight applications. Washers are manufactured from various materials such as stainless steel, carbon steel, brass, nylon, and rubber, depending on the environmental and mechanical requirements. They are commonly used in construction, automotive, aerospace, electrical, and industrial machinery applications.