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:
12-POINT COLLAR NUT - 81906850417 suitable for MAN D engines
Superior Quality of the 12-point collar nutThe 12-point collar nut with the comparison number 81906850417 is an essential product specifically designed to meet the demands of engines. Weighing only 0.188 kg, this replacement part meets the highest standards of robustness and reliability.Compatible with MAN D Engines and MoreThis OEM replacement part is suitable for MAN D engines and offers optimal fit due to its manufacturing according to the standards of the Original Equipment Manufacturer. Unlike aftermarket products, the 12-point collar nut provides unparalleled quality. Rely on OEM replacement parts to maximize the efficiency and longevity of your engines.
SPEED NUT - 81906850416 suitable for MAN D engines
Speed Nut - Comparison Number 81906850416Discover the speed nut with the comparison number 81906850416, which is an ideal solution for engines. This OEM replacement part impresses with its excellent fit and is suitable for MAN D engines. Weighing only 0.002 kg, this product is lightweight and optimally designed for use in demanding environments.Perfect Fit for MAN D EnginesThe speed nut is an essential component that has been precisely designed for MAN D. As part of our top-quality OEM replacement parts, we help enhance the reliability of your engines. Unlike aftermarket products, our OEM replacement parts provide the assurance needed for the smooth operation of your diesel and gas engines.
SPEED NUT - 81906850412 suitable for MAN D engines
Speed nut – Comparison Number 81906850412 Discover our top-quality speed nut with the comparison number 81906850412, which is essential for engines used in marine and stationary applications. This product impresses with its precise workmanship and is ideally suited for demanding applications where reliability matters.
SPEED NUT - 81906850410 suitable for MAN D engines
Speed nut for Your Engine NeedsDiscover the speed nut with the comparison number 81906850410, specially designed for engine requirements. This product is an essential component to optimize connections in your applications. Weighing only 0.007 kg, this speed nut is both handy and robust.
HEXAGON NUT - 81906850407 suitable for MAN D engines
Exclusive Hexagon Nut Suitable for MAN D EnginesDiscover the Hexagon nut (comparison number: 81906850407), which has been specifically designed to achieve an optimal fit for MAN D engines. Weighing only 0.36 kg, this product offers an excellent combination of lightweight and robustness. Our Hexagon nut is an essential component for the reliable performance of your engines.OEM Spare Part for a Perfect FitThe Hexagon nut is an additional spare part that meets the manufacturer's requirements. This product is suitable for MAN D engines and ensures precise accuracy necessary for smooth operation. Rely on the quality of the Hexagon nut to keep your engines running efficiently.
HEXAGON NUT - 81906850406 suitable for MAN D engines
Hexagon nut suitable for MAN D enginesDiscover the hexagon nut with the comparison number 81906850406, an essential OEM replacement part for your machines. This specially designed nut is suitable for MAN D engines and ensures stable connections. Weighing 0.25 kg, this product is ideal for use in various applications.Reliable quality of OEM replacement partsOur hexagon nut belongs to the category of nuts and offers safety in use. This product is suitable for MAN D engines and is excellent for use in diesel and gas engines as well as marine applications. Each OEM replacement part undergoes strict inspections to support the performance of your engines.
NUT - 81906850405 suitable for MAN D engines
Precise Nut with Comparison Number 81906850405Discover the precise Nut with the comparison number 81906850405, specifically designed to fit MAN D engines. Weighing only 0.02 kg, this OEM replacement part is ideal for various applications where stability and reliability are required. This Nut ensures optimal fit accuracy, which is crucial for the long-term performance of the engines.Comparison Number 81906850405 – Excellence in Every DetailThe comparison number 81906850405 designates a product classified within the OEM replacement parts category. It meets the highest standards and is suitable for the specific requirements of MAN D engines. Each component is manufactured with the utmost care to support a long lifespan and efficiency of the engines.
HEXAGON NUT - 81906850403 suitable for MAN D engines
Hexagon nut with comparison number 81906850403Discover the Hexagon nut with the comparison number 81906850403, featuring specially developed characteristics to meet engineering requirements. This OEM replacement part belongs to the group of Nuts and is perfectly suited for your applications in marine and stationary technology. Weighing only 0.005 kg, it is versatile and easy to handle.Suitable for MAN D enginesThe Hexagon nut is suitable for MAN D engines and meets the high standards of OEM replacement parts. Its reliability and quality ensure that you do not have to make compromises in operation. Rely on this product to secure the longevity of your engines and maximize their efficiency.
COLLAR NUT - 81906850402 suitable for MAN D engines
Collar Nut for Reliable ApplicationsDiscover the collar nut with the comparison number 81906850402, an OEM replacement part specifically designed to fit MAN D engines. Weighing only 0.003 kg, this product offers the necessary precision and stability required for your technical applications. The use of OEM replacement parts ensures you receive a durable and stable product.Suitable for MAN D Engines – Your Optimization SolutionThe collar nut belongs to the group of nuts and is an indispensable component that ensures the safe operation of your engines. This product is perfectly suited to efficiently assemble and secure your system. With the comparison number 81906850402, you can be confident that you are choosing a suitable OEM replacement part that harmonizes optimally with your requirements.
SLEEVE NUT - 81906850401 suitable for MAN D engines
Discover the Sleeve Nut for Your EnginesDiscover the sleeve nut with the comparison number 81906850401. This OEM replacement part is specifically designed to meet the requirements of engines known for delivering optimal performance. Weighing only 0.005 kg, this product is lightweight yet durable. It falls under the category of nuts and ensures that you are well-equipped.Suitable for MAN D Engines – Quality IncludedThis sleeve nut is suitable for MAN D engines and offers an excellent solution for your replacement part needs. OEM replacement parts are known for their high quality and reliability. You can trust that this product will ensure long-term functionality when combined with your engines.
HEXAGON NUT - 81906850399 suitable for MAN D engines
Robust Hexagon Nut for MAN D EnginesDiscover our robust product, the hexagon nut, with the comparison number 81906850399. This spare part plays an essential role in the operation of engines used in marine and stationary applications. It is suitable for MAN D engines and is characterized by excellent manufacturing quality.
HEX COLLAR NUT - 81906850394 suitable for MAN D engines
Hex Collar Nut with Comparison Number 81906850394Discover the hex collar nut with the comparison number 81906850394, an essential OEM spare part designed for MAN D engines. This nut is distinguished by its high quality and reliability, specially engineered to deliver optimal performance in diesel and gas engines. Trust in precision that proves itself in every application.
HEX COLLAR NUT - 81906850393 suitable for MAN D engines
Robust Product: Hex Collar Nut for Powerful EnginesDiscover the hex collar nut with the comparison number 81906850393, specifically designed to ensure a perfect fit for MAN D engines. This premium product is an essential OEM replacement part that offers maximum reliability and durability. Weighing only 0.009 kg, it is ideal for various applications in maritime and stationary fields.Product Information: OEM Replacement Parts for Highest DemandsThe hex collar nut is an indispensable component suitable for MAN D engines. As an OEM replacement part, you benefit from the high quality that meets the demands of professional users. This component ensures that your engines operate smoothly and efficiently. Rely on our precise manufacturing and the performance you expect from such products.
HEX LOCK NUT - 81906850391 suitable for MAN D engines
Hex Collar Lock Nut for Reliable ApplicationsDiscover our hex collar lock nut (comparison number 81906850391), which is considered an important OEM replacement part. This product is suitable for MAN D engines and provides the necessary stability in maritime and stationary applications. Weighing only 0.003 kg, it combines lightweight design with robustness to support the functionality of your engine.Quality through OEM Replacement PartsThe hex collar lock nut is an essential component in the category of nuts for engines. As an OEM replacement part, you can rely on it to meet specific requirements and enhance the maximum performance of your machines. Trust in high-quality components to optimize the efficiency of your engines.
HEXAGON NUT - 81906850390 suitable for MAN D engines
High-Performance Hexagon Nut for MAN D EnginesThe hexagon nut with the comparison number 81906850390 is an essential OEM replacement part designed for MAN D engines. This specialized component is from the nuts product group and meets the stringent requirements for marine and stationary applications. Weighing only 0.007 kg, handling this hexagon nut is effortless and efficient.
HEX LOCK NUT - 81906850388 suitable for MAN D engines
Hex collar lock nut with reference number 81906850388Discover the hex collar lock nut with reference number 81906850388, which proves to be an indispensable product for your engine technology. This precisely manufactured OEM spare part ensures a secure fit and is optimally suited for use in MAN D engines, which demand the highest standards of reliability and performance.
HEX LOCK NUT - 81906850387 suitable for MAN D engines
Optimal Hex Collar Lock Nut for Efficient EnginesDiscover our hex collar lock nut with the comparison number 81906850387, which is ideally suited for use in MAN D engines. This nut, an important OEM replacement part, ensures the stability and safety of your engines. Weighing only 0.02 kg, it offers an excellent combination of lightness and durability.Premium OEM Replacement Parts for Best PerformanceThis hex collar lock nut is a certified product and belongs to the category of OEM replacement parts. Suitable for MAN D engines, it meets the high demands placed on manufacturers. Our products ensure that your drive system operates at its best and works reliably.
HEX LOCK NUT - 81906850386 suitable for MAN D engines
Excellent Hex Collar Lock Nut for EnginesDiscover the hex collar lock nut with the comparison number 81906850386, an essential product for your applications. This OEM replacement part meets the highest standards and is ideal for various engine systems. Weighing only 0.03 kg, the nut is perfect for stable use in demanding environments.
HEX LOCK NUT - 81906850385 suitable for MAN D engines
Robust Hex collar lock nut suitable for MAN D enginesThe hex collar lock nut with the comparison number 81906850385 is an essential OEM replacement part specifically designed for the requirements of engines in marine and stationary applications. Weighing 0.05 kg, this product combines lightness and stability, which is important for the safety of your machines. Our hex collar lock nut ensures a reliable connection and smooth functionality of the engines.Reliable quality thanks to OEM replacement partsOver 1 million replacement parts are ready in our inventory, including the hex collar lock nut that is suitable for MAN D engines. Our large stock ensures fast availability and efficient delivery. Trust in the quality of our OEM replacement parts, which meet the stringent requirements in the engine sector.
HEX COLLAR LOCK NUT - 81906850384 suitable for MAN D engines
Precise Performance with the Hex Collar Lock NutDiscover the Hex collar lock nut (comparison number: 81906850384), an OEM replacement part specifically designed for MAN D engines. Weighing just 0.07 kg, this product ensures a reliable connection and performance in marine and stationary applications. Trust in the quality that only OEM replacement parts can provide.Optimal Fit for Marine Engine ApplicationsThe Hex collar lock nut is a critical product that is indispensable for the efficient functioning of your engines. Every detail of this nut has been precisely designed to ensure optimal fit and durability. Trust in a product that meets the demands of performance and reliability, making it ideal for use in locomotives.
HEX COLLAR NUT - 81906850383 suitable for MAN D engines
Reliable Product: Hex Collar NutDiscover the Hex collar nut with the comparison number 81906850383. This OEM replacement part is an essential component designed for MAN D engines. Weighing only 0.001 kg, this product offers an optimal combination of performance and reliability to support the functionality of your engine.Perfect Fit for MAN D EnginesThe Hex collar nut meets the high-quality standards associated with OEM replacement parts. It has been designed specifically for MAN D engines, ensuring a precise fit that meets the highest demands. Rely on the durability and stability of this replacement part, which is specially suited for engines in marine and stationary applications.
SLOTTED ROUND NUT - 81906850382 suitable for MAN D engines
Slotted Round Nut for Efficient ApplicationsThe slotted round nut with the comparison number 81906850382 is an essential OEM spare part specifically designed to keep machines performing at their best. Weighing 0.44 kg, this slotted round nut is an important element for use in various applications, particularly in marine and stationary technology that require maximum performance.Suitable for MAN D EnginesThis product is suitable for MAN D engines and ensures a precise connection, which is crucial for the stability of the entire system technology. The quality of this slotted round nut meets the highest standards and can be installed effortlessly, enhancing the efficiency of your machines.
HEX COLLAR NUT - 81906850379 suitable for MAN D engines
Precise Hex Collar Nut for Special EnginesDiscover the hex collar nut with the comparison number 81906850379, a quality product specifically designed for use in engines. This OEM replacement part is perfectly suited for MAN D engines and meets the highest quality standards. Weighing only 0.01 kg, this component is ideal for use in marine and locomotive technology.Reliability of OEM Replacement PartsThis hex collar nut is a perfect example of OEM replacement parts. It excellently matches the specific requirements of engines and ensures optimal functionality. Rely on the robustness and reliability of this product to avoid longer downtimes and ensure the efficiency of your engines.
HEX COLLAR NUT - 81906850378 suitable for MAN D engines
Versatile OEM Spare Part for Demanding ApplicationsDiscover the Hex collar nut with the comparison number 81906850378, an essential OEM spare part specifically designed for use in MAN D engines. This precise product belongs to the group of Nuts and supports a reliable connection in demanding applications. Weighing only 0.002 kg, it combines lightweight design with outstanding functionality.
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.