Realbolt Engineering Industries is a premier manufacturer and supplier of precision-engineered industrial washers, serving global industries with high-performance fastening components. Our washers are designed to distribute load, prevent loosening, and provide insulation or spacing in various mechanical and structural assemblies. Trusted across sectors like Automotive, Aerospace, Construction, Marine, and Heavy Engineering, our products meet the highest standards for strength, reliability, and durability.
Manufactured using advanced processes and premium-grade raw materials, our washers ensure consistent dimensional accuracy, excellent corrosion resistance, and superior mechanical performance. Whether for general-purpose use or specialized applications, Realbolt Engineering Industries delivers the right washer solutions to meet your fastening needs.
We offer an extensive range of industrial washers in standard and customized configurations, manufactured in compliance with international dimensional and material standards.
| Specification | Details |
|---|---|
| Standards | DIN 125, DIN 127, DIN 9021, ASTM F436, ISO 7089, BS 4320 |
| Sizes | M2 to M100 | 1/8" to 4" (Custom sizes available on request) |
| Types | Flat Washers, Spring Washers, Lock Washers, Plain Washers, Fender Washers, Sealing Washers, Conical Washers |
| Materials | Stainless Steel, Carbon Steel, Alloy Steel, Brass, Copper, Aluminum, Nylon |
| Hardness | Soft, Medium, Hardened (as per application requirements) |
| Finish | Plain, Zinc Plated, Hot-Dip Galvanized, Black Oxide, Nickel Coated, PTFE Coated |
| Certifications | EN 10204 3.1 / 3.2, NACE MR0175, RoHS Compliance, Third-party Inspection Available |
Plain Flat Washers are thin, disk-shaped components used to distribute the load of a threaded fastener such as a bolt or screw. They help reduce surface wear, prevent fastener embedment, and offer a smooth bearing surface. Flat washers are essential in improving the integrity of bolted joints and are commonly used in construction, machinery, automotive, and general engineering applications.
Spring Lock Washers are specially designed to prevent fasteners from loosening due to vibration and dynamic loads. These washers feature a helical shape that provides tension between the fastener head and the substrate, effectively locking the assembly in place. Commonly used in automotive, machinery, electrical, and structural applications, spring lock washers enhance the reliability of bolted connections.
Tab Washers are a type of locking washer designed to prevent the loosening of fasteners under vibration or load. These washers feature a tab or projection that engages with the surface of the assembly, providing a secure and stable connection. Commonly used in automotive, electrical, and mechanical applications, tab washers help maintain the integrity of critical assemblies.
Internal Tab Washers are a specialized type of locking washer designed to secure fasteners in place by engaging with the inside of a component or housing. The tab on the washer fits into a slot or hole in the assembly, preventing the washer from rotating and ensuring a stable connection. These washers are commonly used in electrical, automotive, and industrial applications, where secure and vibration-resistant fastening is essential.
Square Washers are flat washers with a square shape, providing more surface area than round washers, which helps distribute loads more evenly and prevent damage to the material being fastened. These washers are commonly used in applications where a larger bearing surface is needed for stability, such as in structural and mechanical assemblies. They are ideal for preventing the fastener from pulling through the material, especially in softer materials.
Square Beveled Washers are designed to distribute loads evenly while providing a secure, stable fit in applications where a flat washer would not suffice. The beveled edge of the washer ensures that the load is distributed efficiently while also helping to prevent loosening caused by vibrations. These washers are commonly used in applications that require precision and durability, particularly in mechanical and structural settings.
Hex Washers are used primarily to distribute the load of a threaded fastener and are designed to fit under hexagon-headed bolts, nuts, or screws. Their hexagonal shape offers increased surface area and provides a better grip, especially when a higher torque is required. These washers are ideal for applications where a strong and reliable connection is necessary, such as in mechanical, automotive, and construction industries.
External Tooth Lock Washers are used to prevent loosening of fasteners due to vibration or torque. These washers feature teeth that grip the surface of the material, providing additional resistance to turning. The external teeth are designed to contact the surface around the fastener, making them ideal for applications that require a secure connection in high-vibration environments, such as automotive, industrial machinery, and electrical systems.
Internal Tooth Lock Washers are designed to prevent loosening of fasteners due to vibration or torque. These washers feature internal teeth that dig into the surface of the material, offering enhanced locking force and securing the fastener in place. They are commonly used in applications where the fastener is installed in a confined space and provide a reliable and secure connection in both low and high vibration environments.
Curved Wave Washers, also known as “wave springs,” are a type of spring washer designed to provide a high amount of compression in a compact space. These washers are made from a flat spring steel material that is bent into a wave-like shape, which allows them to distribute pressure evenly while absorbing shock and vibration. Curved wave washers are ideal for applications where space is limited and a controlled amount of force is required.
Conical Spring Washers, also known as "Belleville Washers," are a type of spring washer designed to provide high spring force in a compact space. Their conical shape allows for a large amount of deflection and load capacity, making them ideal for applications where high axial loads and shock absorption are required. These washers are commonly used in various industries, including automotive, aerospace, and machinery, where precise and controlled pressure is essential.
Self-locking washers are designed to prevent fasteners from loosening due to vibration or dynamic loads. They feature a special design that creates friction between the washer and the fastener, offering a secure locking mechanism that resists loosening. These washers are essential for critical applications where safety and reliability are key, such as in automotive, aerospace, and machinery industries.
Dock washers are specially designed for use in applications where a high load-bearing capacity and durability are essential. They are often used in the construction and repair of docks, piers, and other marine applications. These washers provide stability, prevent damage to surfaces, and ensure that fasteners remain secure under heavy loads and environmental conditions such as moisture and corrosion.
Fender washers are large-diameter washers with a small inner hole, designed to distribute the load of fasteners more evenly over a wider surface area. These washers are commonly used in applications where the material being fastened is soft or prone to damage, such as in automotive, construction, and electrical installations. The increased surface area of the fender washer ensures better load distribution and prevents damage to the work surface.
Ogee washers, also known as "fender ogee washers," are specialized washers designed with a unique ogee-shaped (S-curve) profile that helps improve the washer's load distribution properties. These washers are commonly used in applications where high pressure and load-bearing capacity are required. The ogee shape increases the surface area of contact, making them suitable for softer materials and preventing damage during fastening.
Sealing washers are designed to create a reliable seal between two surfaces to prevent leakage of liquids or gases. These washers are commonly used in applications where a tight, leak-proof seal is critical. Sealing washers are equipped with a rubber, silicone, or other elastomeric material that conforms to surface irregularities, ensuring a durable and effective seal in applications such as plumbing, automotive, and fluid handling systems.
Countersunk washers are designed to accommodate a countersunk screw or bolt, allowing the fastener to sit flush with the surface. These washers are primarily used to distribute the load and prevent damage to the surface beneath the fastener. They provide a clean and sleek finish, especially in applications where aesthetics are important or in assemblies with flush-mounted fasteners.
Finishing washers are used primarily for aesthetic purposes, providing a smooth and polished finish to fasteners. They help in covering the hole and distributing the load evenly across the surface to prevent damage. These washers are commonly used in applications where the appearance is important, such as in decorative or architectural projects.
