Realbolt Engineering Industries is a trusted manufacturer and supplier of precision-engineered industrial nuts, catering to a wide range of demanding applications across sectors such as Oil & Gas, Petrochemical, Construction, Power Generation, and Heavy Equipment Manufacturing. With decades of industry expertise, we deliver fastening solutions that meet global standards for strength, reliability, and performance.
Our nuts are manufactured using high-grade materials and advanced processes, ensuring excellent mechanical properties, corrosion resistance, and long service life. Available in various shapes, thread types, and finishes, our nuts are designed to deliver secure fastening even under extreme temperature and pressure conditions.
Realbolt Engineering Industries offers a comprehensive range of industrial nuts in standard and custom configurations, compliant with international quality and dimensional standards.
| Specification | Details |
|---|---|
| Standards | ASTM A194, ASTM A563, ASME B18.2.2, ISO 4032, ISO 4033, DIN 934, BS 3692 |
| Sizes | M4 to M100 | 1/4" to 4" (Custom sizes available on request) |
| Thread Types | Metric, UNC, UNF, BSW, BSF, Left-Hand Threads |
| Types | Hex Nuts, Heavy Hex Nuts, Lock Nuts, Nylock Nuts, Cap Nuts, Flange Nuts, Square Nuts |
| Heights | Standard, Thin (Jam Nuts), Heavy |
| Materials | Carbon Steel, Stainless Steel, Alloy Steel, Brass, Duplex, Inconel, Monel, Titanium |
| Finish | Plain, Zinc Plated, Hot-Dip Galvanized (HDG), PTFE Coated, Black Oxide |
| Certifications | EN 10204 3.1 / 3.2, NACE MR0175, RoHS Compliance, Third-party Inspection Available |
Hex Nuts are one of the most commonly used types of fasteners, featuring a six-sided (hexagonal) shape that provides a strong grip and easy wrenching. These nuts are designed to work in conjunction with bolts, screws, studs, and other externally threaded components, creating a secure and durable fastening system. Due to their versatility, hex nuts are widely used across various industries including construction, machinery, automotive, power generation, and petrochemical sectors.
Heavy Hex Nuts are larger and thicker versions of standard hex nuts, providing greater strength and load-bearing capability. Designed for high-pressure and high-temperature applications, these nuts are commonly used with heavy hex bolts, studs, and other high-strength fasteners. Their increased dimensions offer better torque resistance, making them ideal for critical structural, mechanical, and industrial assemblies across sectors such as Oil & Gas, Power Plants, Petrochemicals, and Heavy Equipment Manufacturing.
Jam Nuts are thin-profile hex nuts typically used as a locking mechanism in conjunction with a standard nut to prevent loosening due to vibration or dynamic loads. By tightening the jam nut against a standard nut, friction is increased, helping to maintain a secure fastening. Jam nuts are ideal for applications where space is limited or where a lower-profile nut is preferred. These nuts are widely used in machinery, automotive assemblies, equipment installations, and light to medium-duty industrial applications.
Coupling Nuts, also known as extension nuts, are long hexagonal nuts used to join two male threads, usually threaded rods or pipes. These nuts are essential for applications requiring extended reach or structural continuity. Their hex shape allows easy tightening using standard wrenches. Coupling nuts are widely used in construction, machinery assembly, plumbing, and other structural applications where extended fastening is necessary.
Hex Cap Nuts, also known as acorn nuts or dome nuts, feature a domed top that covers exposed bolt threads for a finished look and added safety. These nuts not only enhance the appearance of assemblies but also protect threads from damage and prevent injury from sharp edges. Hex cap nuts are commonly used in architectural structures, automotive parts, furniture, and equipment that require both aesthetics and safety.
Hex Flange Nuts are specialized fasteners featuring a wide flange at one end that acts as an integrated washer. This design helps to distribute the load evenly, prevent damage to the mating surface, and reduce the chance of loosening due to vibration. These nuts are commonly used in automotive, machinery, and structural applications where a secure and vibration-resistant joint is essential.
Hex Weld Nuts are internally threaded fasteners specifically designed for welding onto steel surfaces, providing a strong and permanent threaded connection. These nuts typically have precision weld projections or pilot extensions to ensure proper alignment and secure attachment during the welding process. They are widely used in automotive, structural, fabrication, and heavy equipment industries where robust and vibration-resistant connections are essential.
Square Nuts are four-sided internally threaded fasteners known for their large bearing surface, which helps resist loosening and increases the contact area. These nuts are often used in combination with flat washers to prevent damage to the joined surface and are ideal for applications that require hand tightening or access with a wrench. Square nuts are commonly used in vintage machinery, furniture assembly, railways, and heavy-duty structural applications.
Square Thin Nuts, also known as square jam nuts, are low-profile four-sided nuts used in applications where space is limited or where a standard square nut would be too thick. These nuts are typically used as a lock nut, positioned against another nut to prevent loosening under vibration or dynamic loads. Square thin nuts are favored in both mechanical and decorative applications due to their vintage look and compact form.
Square Weld Nuts are specialized fasteners designed for welding to a surface. They feature a square base that provides a secure attachment point when welded, making them ideal for applications where a permanent or semi-permanent fastening solution is required. These nuts are commonly used in automotive, machinery, and structural applications, where high-strength and durability are essential.
Acorn Nuts, also known as cap nuts or domed nuts, are fasteners with a domed top designed to provide a secure and aesthetically pleasing finish. These nuts are commonly used in applications where protection of the threaded part is required or where a clean appearance is desired. Acorn nuts are typically used in automotive, machinery, and furniture applications, as well as in industries where a smooth finish is essential.
Lifting Eye Nuts are specialized fasteners designed to provide a secure point for lifting or handling heavy loads. They feature a loop or eye at the top of the nut, allowing for easy attachment of lifting equipment such as hooks or cables. These nuts are commonly used in construction, heavy equipment, automotive, and industrial applications, where they help facilitate the safe and efficient movement of parts and assemblies.
Wing Nuts are a type of fastener designed for easy manual tightening and loosening without the need for tools. They feature "wings" on each side that allow for quick, hand-operated installation and removal. Wing nuts are commonly used in applications where frequent adjustments or disassembly are required, such as in machinery, automotive, and electrical equipment.
T-Slot Nuts are designed to fit into the T-slots of machine tables, frames, and other structural applications. These nuts are primarily used in industries such as manufacturing, automotive, and machinery, where they provide a reliable and secure fastening solution. T-Slot Nuts are designed to allow for easy sliding and positioning within T-slot tracks, making them ideal for assembly or adjustments in complex systems and equipment.
Nylock Nuts, also known as nylon insert lock nuts, are designed to prevent loosening due to vibration and pressure. The nylon insert inside the nut creates a frictional lock on the threads of the bolt, ensuring a secure fastening. These nuts are commonly used in applications where vibration or movement could cause traditional nuts to loosen, making them ideal for industries such as automotive, aerospace, and construction.
Nylock Jam Nuts combine the features of a jam nut with the added benefit of a nylon insert for locking. These nuts are designed to prevent loosening under vibration or pressure. Nylock Jam Nuts are thinner than standard nuts, allowing them to fit in tight spaces while still providing a secure fastening. They are widely used in applications where space is limited but reliability is essential, such as in automotive, aerospace, and machinery assemblies.
K-Lock Nuts, also known as serrated flange nuts or locking nuts, feature a serrated surface on the base of the nut that provides additional grip against loosening under vibration or pressure. The unique locking mechanism ensures the nut stays in place without requiring additional locking devices. K-Lock Nuts are commonly used in automotive, construction, and machinery industries where vibration resistance is crucial.
2-Way Lock Nuts, also known as double lock nuts, are designed with two locking mechanisms to prevent loosening under vibration or external forces. They feature two internal locking faces, ensuring a more secure grip and reducing the chance of bolt or nut loosening. These nuts are commonly used in industries requiring high vibration resistance, such as automotive, aerospace, and heavy equipment manufacturing.
All Metal Lock Nuts are designed to provide a strong and secure fastening solution without relying on any nylon or plastic inserts. These nuts feature a unique construction where the nut’s threads are deformed during installation to create a locking mechanism, which resists loosening under vibrations or torque. Ideal for high-temperature environments, All Metal Lock Nuts are widely used in industries such as aerospace, automotive, military, and heavy machinery.
Slotted Castle Nuts are hexagonal nuts with a unique design that includes slots for a cotter pin to secure the nut in place. These nuts are commonly used in applications where a high level of security is required to prevent loosening under vibration or torque. Slotted Castle Nuts are ideal for use in automotive, aerospace, and machinery industries, where safety is critical, and are widely used on shafts, axles, and other rotating parts.
12-Point Flange Nuts are designed for use in applications that require precise fastening and enhanced grip. They feature a 12-point design, which provides greater surface contact compared to standard nuts, reducing the chances of slipping and ensuring more torque resistance. These nuts also feature a flange, which acts as a washer, distributing the load more evenly and minimizing the risk of damaging the surface being fastened. Commonly used in automotive, industrial, and aerospace applications, they offer superior performance in high-stress environments.
Lug Nuts are specially designed fasteners used to secure wheels to vehicles, ensuring that they stay in place during operation. They are typically used in automotive, truck, and heavy machinery applications where wheels need to be tightly secured. Lug nuts come in a variety of designs, including conical, flat, and mag styles, to match different wheel types. They provide a high level of security and performance, even in demanding environments with heavy loads and high speeds.
Open Lug Nuts, also known as "Acorn Nuts" or "Tuner Nuts," are designed for securing wheels and are commonly used in automotive and racing applications. These nuts are characterized by their open-ended design, which allows for easier installation and removal, making them ideal for use with alloy wheels and high-performance vehicles. Open lug nuts are available in a variety of materials, finishes, and sizes to meet the requirements of different vehicle models and manufacturers.
