Screw nuts – secure fastening for engine systems
Screw nuts are fundamental components for assembling and securing mechanical structures, especially in engine and industrial systems. Whether used in combustion engines, marine machinery or stationary equipment – high-quality screw nuts ensure reliable fastening under high loads, vibrations and temperature fluctuations. They are essential for safety, serviceability and long-term performance.
Choose from following:
HEXAGON NUT - 85400006112 suitable for MAN D engines
Hexagon nut with comparison number 85400006112Discover the hexagon nut with comparison number 85400006112, which is an essential OEM spare part suitable for MAN D engines. This nut offers an optimal fit and plays a crucial role in the stability of your engine applications. Thanks to its excellent workmanship, it is durable and supports the efficiency of your engines under various operating conditions.
NUT - 85400006068 suitable for MAN D engines
Robust Nut with Comparison Number 85400006068The nut with the comparison number 85400006068 is an essential OEM spare part suitable for MAN D engines. This product impresses with its precision and durability, which are indispensable in the engine industry. Weighing 0.4 kg, this nut is robust enough to deliver stable performance even under demanding conditions.Suitable for MAN D EnginesOur nut is suitable for MAN D engines and provides the reliability you need. OEM spare parts are crucial for the optimal functioning of your engines and allow you to maintain consistently high quality. Rely on this precisely manufactured nut to maximize your engine performance and avoid costly failures.
HEXAGON NUT - 85400005432 suitable for MAN D engines
Premium Hexagon Nut with Comparison Number 85400005432Discover our hexagon nut with the comparison number 85400005432, an essential product for engines in marine and stationary use. This hexagon nut is suitable for MAN D engines and provides a reliable solution for your applications.Fit for MAN D EnginesWeighing only 0.02 kg, the hexagon nut ensures easy handling without compromising stability. The product is designed as an OEM spare part, ensuring excellent fit. Trust in our experience and expertise: Our family-owned business in its second generation specializes in high-quality OEM spare parts.
LOCKING NUT - 85400005431 suitable for MAN D engines
Robust Locking Nut Suitable for MAN D EnginesDiscover the locking nut with the comparison number 85400005431, an essential OEM spare part that perfectly fits MAN D engines. This product is designed to function reliably in demanding applications. Weighing only 0.02 kg, the locking nut is ideally suited and offers stability even under high loads.Precise Construction for Highest StandardsThe locking nut ensures a precise fit that is crucial for the safety of your engines. It is suitable for MAN D engines and contributes to optimal performance under extreme conditions. Thanks to high manufacturing standards as an OEM spare part, this product is particularly durable and trustworthy.
CASTLE NUT - 85400005369 suitable for MAN D engines
Castle Nut 85400005369 for Reliable EnginesThe castle nut with the comparison number 85400005369 is an essential OEM replacement part, suitable for MAN D engines. It offers the perfect combination of quality and functionality, which is indispensable for use in demanding applications. This nut belongs to the category "Nuts" and is an ideal component to optimize the performance of your engines.Top-Quality Product for Efficient SolutionsOur castle nut is specifically designed for MAN D engines and stands out for its workmanship and functionality. With the comparison number 85400005369, you can be assured that you are receiving an OEM replacement part that is designed to meet the highest demands.
CASTLE NUT - 85400005368 suitable for MAN D engines
Castle Nut Suitable for MAN D EnginesDiscover our castle nut, a top-quality OEM replacement part that is suitable for MAN D engines. With the comparison number 85400005368, this product meets the highest standards of precision and quality in the industry. Rely on OEM replacement parts specifically designed for the smooth operation of your engines.Precise Fit and PerformanceOur castle nut ensures that all components suitable for MAN D engines work together optimally. By using selected materials, we achieve durability and reliability. This minimizes potential failures and ensures the flawless operation of your machines.
UNION NUT - 85400004775 suitable for MAN D engines
Union Nut – An Essential ProductThe union nut with the comparison number 85400004775 is an essential OEM spare part that is characterized by high precision. It is ideally suited for applications in engines, especially in engines that are compatible with MAN D. This premium union nut meets all quality and reliability standards to ensure long-lasting performance.Comparison Number 85400004775 for Perfect IdentificationThe comparison number 85400004775 ensures easy identification of this spare part. Our customers can rest assured that they are receiving exactly the right OEM spare part for their engines with this product. This component enhances the connection technology of engines and contributes to efficiency.
UNION NUT - 85400004772 suitable for MAN D engines
Reliable Spare Parts for Diesel and Gas EnginesDiscover the union nut with the reference number 85400004772, an essential OEM spare part specifically designed for use in engines. This reference number ensures the precision you expect from an OEM spare part.
UNION NUT - 85400004749 suitable for MAN D engines
Essential Product: Union NutDiscover our product, the union nut with the comparison number 85400004749. This component is an indispensable OEM spare part, suitable for MAN D engines. Weighing only 0.06 kg, this union nut is distinguished by its robust construction and reliability, performing excellently in various industrial applications.Precise Identification: Comparison Number 85400004749The comparison number 85400004749 assists in identifying this durable OEM spare part, specifically designed for industry requirements. The union nut ensures a secure connection of all engine components, contributing to optimal functionality. Rely on our strict internal controls to ensure the quality of our products.
HEXAGON NUT - 85400004682 suitable for MAN D engines
Best Replacement Part: Hexagon Nut 85400004682Discover the hexagon nut with the comparison number 85400004682, which is suitable as a top-quality OEM replacement part. This product fits perfectly with MAN D engines and offers an optimal solution for your requirements. Weighing only 0.03 kg, it combines functionality and durability.Reliable Quality for MAN D EnginesThe hexagon nut 85400004682 belongs to the category of nuts and meets the highest quality standards. The application of this hexagon nut is ideal in conjunction with MAN D engines to enable a stable connection. Rely on our over 25 years of experience and trust in our OEM replacement parts.
HEXAGON NUT - 85400003956 suitable for MAN D engines
Robust Hexagon Nut Compatible with MAN D EnginesDiscover the hexagon nut with the comparison number 85400003956 – an essential replacement part, specifically designed for the requirements of your MAN D engines. This nut ensures safety and reliability in the operation of your engines and belongs to the category of nuts that are valued in the industry.Optimal Fit and Quality for EnginesWeighing only 0.08 kg, our hexagon nut provides an ideal combination of lightness and stability. It is designed to be compatible with MAN D engines, making it easy to handle and seamlessly integrating into existing systems. Rely on the quality of our replacement parts to maximize the efficiency of your engines.
NUT - 85400003396 suitable for MAN D engines
Special Nut for MAN D Engines – Comparison Number 85400003396Discover our nut that is suitable for MAN D engines. With the comparison number 85400003396, we ensure that you receive a high-quality product that works optimally in your engine system. This nut combines lightness with robustness and is therefore ideal for use in demanding environments.
NUT - 85400003157 suitable for MAN D engines
Reliable Nut for MAN D EnginesDiscover the nut with the comparison number 85400003157, which is specifically suitable for MAN D engines. This OEM replacement part offers a perfect fit and optimal performance for your diesel and gas engines. Weighing only 0.01 kg, this nut is particularly well-suited for marine and stationary applications, making it a useful addition to your projects.Strict Quality Controls for OEM Replacement PartsEach product in the Nuts category, including the comparison number 85400003157, is subject to strict internal controls. This ensures that you receive only top-notch OEM replacement parts for your engines. Quality and reliability are our top priorities at MOPA Motorparts, so you can count on high performance from your equipment.
HEXAGON NUT - 85400002886 suitable for MAN D engines
Hexagon Nut with Comparison Number 85400002886Discover the Hexagon nut with comparison number 85400002886 – an essential accessory specifically designed for MAN D engines. This product falls under the category of Nuts and offers you the perfect fit and excellent performance for engines operating under extreme conditions. Weighing only 0.04 kg, it is lightweight yet extremely durable.Quality of OEM ManufacturersOur Hexagon nut, comparison number 85400002886, represents the highest standards. Since we only provide OEM accessories, you receive verified quality from the Equipment Manufacturer. This ensures the reliability and longevity of your MAN D engines, unlike aftermarket parts that may not always deliver the desired performance.
HEXAGON NUT - 85400002511 suitable for MAN D engines
Precise Hexagon Nut for Your RequirementsDiscover the hexagon nut with the reference number 85400002511, a high-quality OEM replacement part designed to ensure reliable connections in engines. Weighing only 0.02 kg, this product is ideal for a variety of demanding applications, particularly in the marine and stationary industries.
NUT - 85400002171 suitable for MAN D engines
Quality Nut Suitable for MAN D EnginesDiscover our nut with the comparison number 85400002171, which is an ideal addition to your machines. This OEM replacement part is suitable for MAN D engines and offers reliable performance. Weighing 0.18 kg, the nut is compact yet robust, making it perfect for marine and stationary applications.
CASTLE NUT - 85400002121 suitable for MAN D engines
Castle Nut with Comparison Number 85400002121 Discover our castle nut with the comparison number 85400002121, an essential OEM spare part for your engine needs. This castle nut is a crucial component designed specifically for MAN D engines. Weighing only 0.04 kg, it offers user-friendly handling and is ideal for various applications in maritime and stationary areas.
WHEEL BOLT WRENCH - 85400002032 suitable for MAN D engines
Wheel bolt wrench: Comparison number 85400002032 in focusDiscover our wheel bolt wrench with the comparison number 85400002032, an indispensable product for professional applications. This wheel bolt wrench is suitable for MAN D engines and promotes efficient handling during maintenance and repair work. With its robust construction and a weight of 1.47 kg, it offers durability. This OEM spare part impresses with the same reliability as components from renowned manufacturers.Optimal solution for MAN D enginesThe product is optimally tuned and suitable for MAN D engines, making it easier for you to maintain and service your machines. Positioned in the category of nuts, the wheel bolt wrench meets the highest industry standards. Rely on the efficiency and precision of our OEM spare parts when you want to keep your engines in top condition.
HEX CAP NUT - 85300020747 suitable for MAN D engines
Hex Cap Nut Suitable for MAN D EnginesDiscover the hex cap nut with the comparison number 85300020747, specifically designed to work efficiently with MAN D engines. Weighing only 0.05 kg, this product impresses with its excellent handling and robustness. As an essential component, the hex cap nut ensures that all parts are optimally connected and your engines operate reliably.OEM Replacement Parts in Exceptional QualityOur hex cap nut, an OEM replacement part, is designed to fit MAN D engines. Thanks to its precise fit, this replacement part is the ideal choice for diesel and gas engines. Rely on its long lifespan and optimal operation, whether in marine and stationary applications or in locomotives.
COLLAR NUT - 85300020692 suitable for MAN D engines
Premium Collar Nut: Efficiency for EnginesThe collar nut with the comparison number 85300020692 is a top-quality OEM spare part, specifically designed for the challenges in marine and stationary engine technology. Weighing 0.7 kg, this product ensures a reliable connection that is crucial for the optimal function of your engines.Why OEM Spare Parts Are EssentialOur collar nut is suitable for MAN D engines and exceeds the expectations placed on aftermarket parts. Only OEM spare parts provide the necessary quality and precision required for your machines to operate efficiently. Trust parts that have been developed by the manufacturers themselves to minimize failures and maximize uptime.
NUT - 85300020591 suitable for MAN D engines
Nut suitable for MAN D – Your ideal OEM spare partDiscover our nut with the reference number 85300020591, an important OEM spare part specifically designed for MAN D engines. Weighing only 0.2 kg, this nut impresses with its stability and functionality. It reliably supports the performance of your engines and is therefore indispensable for any B2B customer who demands the highest quality standards.Precise fit for MAN D enginesThe reference number 85300020591 refers to a product that is perfectly suited to the requirements of MAN D engines. This OEM spare part is aligned with the strict standards of the industry, ensuring both durability and optimal operation. Trust the experience of MOPA Motorparts when it comes to sourcing spare parts.
LOCKING NUT - 85300020570 suitable for MAN D engines
Locking Nut for MAN D Engines Discover our locking nut (comparison number 85300020570), a high-quality OEM replacement part specifically designed for optimal performance of engines. This product ensures that your engine operates reliably and efficiently.
LOCKING NUT - 85300020560 suitable for MAN D engines
Locking Nut for Reliable Engine MaintenanceThe locking nut with the comparison number 85300020560 is an essential OEM spare part that assists you in maintaining your engines. This locking nut is lightweight, weighing only 0.22 kg, which facilitates installation. It is specifically designed to fit MAN D engines and ensures a smooth and secure connection.Quality through OEM Spare PartsThe use of OEM spare parts like this locking nut compared to aftermarket solutions provides significant advantages. OEM stands for Original Equipment Manufacturer, meaning that each part, including the comparison number 85300020560, is manufactured according to the high standards set by the manufacturer. This spare part suitable for MAN D helps ensure that your engines operate reliably.
HEXAGON NUT - 85300020535 suitable for MAN D engines
Robust Hexagon Nut for Reliable ApplicationsDiscover the hexagon nut with comparison number 85300020535, an indispensable product for engines in marine and stationary applications. This nut is not just a simple component, but offers the performance and safety that your applications require. Weighing only 0.02 kg, it ensures effortless integration into your systems.Suitable for MAN D Engines: Quality Without CompromiseThis OEM spare part is suitable for MAN D engines and meets the highest quality standards. Unlike aftermarket products, which often vary in fit and functionality, the hexagon nut with comparison number 85300020535 provides an optimal fit and reliability. Rely on OEM spare parts that are specifically designed for use in demanding environments.
Function and advantages
Screw nuts work in combination with bolts or studs to create strong, threaded connections. In engine systems, a proper engine nut or motor nut must withstand dynamic forces and temperature-related expansion. Key benefits include:
- Secure locking of mechanical components under stress
- Resistance to loosening under vibration
- Easy assembly and disassembly for maintenance
In high-precision systems, mechanical nuts often feature locking mechanisms, flange bases or specialized coatings to enhance grip and corrosion resistance.
Applications and types
Engine nuts are used to fasten cylinder heads, manifolds, brackets and rotating assemblies. Motor nuts are common in alternators, starters, pumps and other auxiliary components. Depending on the application, mechanic nuts can be hex nuts, locknuts, self-locking nuts or high-temperature nuts.
For industrial and marine use, mechanical nuts are often made of stainless steel or alloyed materials to withstand corrosion, vibration and thermal cycles. Our range includes all standard types and sizes suitable for MTU, MAN, Volvo Penta, Deutz and MWM engines.
Availability and sourcing
We stock a wide selection of screw nuts and related fasteners for engines, industrial equipment and marine applications. As experienced screws and nuts suppliers, we provide OEM-quality with fast delivery, technical support and high availability – ideal for overhauls, repairs or production sourcing.
FAQ
What are screw nuts used for in engines?
Screw nuts in engines are used to secure critical components such as cylinder heads, exhaust systems, brackets and rotating parts. They must withstand heat, vibration and mechanical stress without loosening.
What is the difference between mechanical nuts and mechanic nuts?
“Mechanical nuts” refers to all technical fasteners used in machines, while “mechanic nuts” is a more informal term often used in workshop contexts. Both describe the same parts but are used in different settings.
Where can I buy engine nuts and motor nuts?
Engine nuts and motor nuts are available from specialized screws and nuts suppliers like us. We offer a wide range of standard and special fasteners for diesel and gas engines, with OEM compatibility and fast shipping.