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:
HEX COLLAR NUT - 2423315013 suitable for Bosch engines
Premium Hex Collar Nut for Reliable ApplicationsDiscover the hex collar nut with the comparison number 2423315013, an essential OEM spare part suitable for MAN D engines. This nut belongs to the group of Nuts and weighs only 0.002 kg without compromising on robustness. It is specifically designed to optimally meet the demands in marine and stationary engine installations.Quality Components for MAN D EnginesThe hex collar nut is an OEM spare part that meets the highest standards, making it an ideal choice for all who value the quality of top-tier parts. Compared to aftermarket products, our spare part offers the assurance that it is precisely tailored to the performance and specifications of the manufacturer. Rely on the reliability that you can only expect from OEM spare parts.
SPEED NUT - 81906850377 suitable for MAN D engines
Precise Speed Nut for Demanding ApplicationsDiscover our Speed Nut, listed under the comparison number 81906850377. This product is an essential OEM replacement part, specifically designed to offer the highest precision and optimal performance. Weighing only 0.001 kg, it is easy to handle and ideal for use in demanding environments.
SQUARE NUT - 81906850375 suitable for MAN D engines
Versatile Square Nut: Comparison Number 81906850375The square nut with comparison number 81906850375 is an essential product specifically designed for industrial use. This OEM spare part is suitable for MAN D engines and is characterized by its high quality. Weighing only 0.002 kg, it is lightweight yet strong enough to handle the challenges of daily operation.Reliability for MAN D EnginesThis square nut is an OEM spare part designed to fit MAN D engines precisely. Thanks to its accurate dimensions, it ensures an optimal connection and smooth operation of your engines. Rely on this product to enhance the efficiency of your machines and minimize downtime.
SPEED NUT - 81906850374 suitable for MAN D engines
Speed Nut: Comparison Number 81906850374Discover the speed nut with the comparison number 81906850374, which is crucial for the stability and safety of your engines. This product is an essential OEM replacement part specifically designed for a variety of applications. Weighing only 0.001 kg, it offers an optimal combination of lightness and strength.Optimal Compatibility with MAN D EnginesThe speed nut is suitable for MAN D engines and ensures a reliable connection of components. Our OEM replacement parts meet the highest standards and support thoughtful application in various fields. Trustworthy materials and precise manufacturing benefit you.
SLOTTED ROUND NUT - 81906850371 suitable for MAN D engines
Slotted Round Nut Compatible with MAN D EnginesDiscover our product, the slotted round nut with the comparison number 81906850371, specifically designed for MAN D engines. This OEM spare part offers the highest functionality and reliability for your engines in marine and stationary applications as well as for locomotives. Weighing only 0.002 kg, this slotted round nut is both lightweight and robust, specifically engineered to deliver optimal results.Quality of OEM Spare PartsOur slotted round nut, comparison number 81906850371, meets the highest standards for OEM spare parts. It ensures that the product fits your requirements while remaining competitively priced. MOPA Motorparts is therefore your first choice when it comes to spare parts that meet the high demands of the industry.
SPEED NUT - 81906850370 suitable for MAN D engines
Innovative Product: Speed Nut 81906850370Discover the speed nut with reference number 81906850370 – a top-quality OEM replacement part that is suitable for MAN D engines. These nuts are essential for your engines and provide a reliable connection of components. The precise manufacturing ensures a high degree of fit, which ensures that your engine runs smoothly.
NUT - 81906850362 suitable for MAN D engines
Reliable Product: Nut Suitable for MAN D EnginesThe nut with the reference number 81906850362 is an indispensable OEM spare part that is specifically designed for use in MAN D engines. Weighing 0.791 kg, this component offers top-level stability and durability. This product ensures a perfect fit, developed for diesel and gas-powered engines, thereby providing optimal functionality.Quality that ConvictsThe OEM spare part impresses with its excellent craftsmanship. Our internal control ensures that only the best products in original equipment manufacturer quality reach our warehouse. The reference number 81906850362 is your key to reliable spare parts and meets the rigorous requirements of our industry.
HEX COLLAR NUT - 81906850358 suitable for MAN D engines
Discover Our Hex Collar NutPresent your engines with the hex collar nut, which is identified by the comparison number 81906850358. This replacement part is not only of the highest quality but also specifically designed to meet the requirements of compatible with MAN D engines. The innovative design ensures that it can be optimally integrated into your engines.Compatible with MAN D Engines – Quality You Can Rely OnOur hex collar nut is compatible with MAN D and belongs to the article group of nuts. Weighing only 0.01 kg, this product is not only handy but also very robust, ensuring reliable performance even under demanding conditions. Trust a replacement part that meets the highest standards.
SLEEVE NUT - 81906850355 suitable for MAN D engines
Precise Information on Sleeve NutDiscover the sleeve nut with the comparison number 81906850355, which has been specifically designed to ensure optimal performance in diesel and gas engines. This product is suitable for MAN D engines and offers a reliable solution for your needs. Weighing only 0.01 kg, the sleeve nut is easy to handle and install.OEM Replacement Parts for High DemandsOur sleeve nut is among the OEM replacement parts known for their exact fit and quality. These OEM replacement parts are perfectly suited to support the performance and longevity of your engines.
HEXAGON NUT - 81906850353 suitable for MAN D engines
Robust Hexagon Nut for Reliable ApplicationsDiscover our Hexagon nut, an essential OEM replacement part with the comparison number 81906850353. This precisely manufactured nut belongs to the category of Nuts and is designed for applications in marine controls as well as stationary systems.Suitable for MAN D EnginesThis component is suitable for MAN D engines and provides the reliability you need. The Hexagon nut weighs only 0.008 kg and is designed to meet the demands of the MAN D series optimally, ensuring a reliable connection and functionality.
SLEEVE NUT - 81906850352 suitable for MAN D engines
Reliable Sleeve Nut for Effective Engine PerformanceOur sleeve nut with the comparison number 81906850352 is an essential OEM spare part designed to ensure optimal performance for MAN D engines. As a lightweight component weighing only 0.008 kg, this sleeve nut offers both stability and reliability needed for the most demanding applications.Perfect Fit for MAN D EnginesThe product, compatible with MAN D engines, impresses with its precise workmanship and optimal compatibility. As an OEM spare part, we provide you with the assurance that this component meets the strict quality standards you expect from MOPA Motorparts. Rely on this spare part to maximize the efficiency of your engines.
HEX COLLAR NUT - 81906850350 suitable for MAN D engines
Excellent OEM Spare Part for MAN D EnginesDiscover the outstanding product, the hex collar nut with the comparison number 81906850350. This OEM spare part impresses with its quality, making it ideal for numerous applications. Designed for MAN D engines, this component offers a precise fit and exceeds the standards of aftermarket products.Robust Construction for the Highest DemandsWith a weight of 0.39 kg, the hex collar nut provides reliable stability and durability. The OEM spare part is specifically designed to meet the demands of engines used in challenging environments. Trust in a product that is optimal for marine and stationary applications as well as locomotives.
SLOTTED ROUND NUT - 81906850349 suitable for MAN D engines
Precise Slotted Round Nut for Reliable Engines Our slotted round nut with the comparison number 81906850349 is an essential OEM replacement part specifically designed to work optimally with MAN D engines. This precisely manufactured slotted round nut offers the right balance of stability and lightweight design, weighing only 0.03 kg.OEM Replacement Parts for Your EnginesThe product with the comparison number 81906850349 belongs to the group of nuts and is suitable for MAN D. Trust in the quality and durability of our OEM replacement parts to maximize the performance of your engines. This helps prevent costly downtime and ensures the operation of your machines.
HEXAGON NUT - 81906850347 suitable for MAN D engines
Robust Hexagon Nut Suitable for MAN D EnginesExperience quality with our hexagon nut, designed for MAN D engines. This reliable product, listed under the comparison number 81906850347, is an essential component for the operation of powerful engines in marine and stationary applications, as well as in locomotives. Weighing just 0.01 kg, the hexagon nut impresses with its strength and is well-suited for various applications.Quality Products for Precision & StabilityOur hexagon nut belongs to the category of OEM spare parts, ensuring that it meets high expectations for fit and durability. This OEM spare part is designed to work seamlessly with MAN D engines while maximizing efficiency. Rely on products that provide the reliability your engines need.
HEXAGON NUT - 81906850345 suitable for MAN D engines
Premium Hexagon Nut: Your Reliable ProductDiscover our hexagon nut with the comparison number 81906850345. This product is specially designed to be optimally used in engines. Weighing only 0.02 kg, this hexagon nut offers outstanding stability and is ideal for versatile use in demanding environments.
SPEED NUT - 81906850340 suitable for MAN D engines
Speed nut suitable for MAN D enginesDiscover the speed nut (comparison number 81906850340), which is an ideal addition for your engines. This replacement part, suitable for MAN D engines, has been manufactured with the highest precision and offers reliable functionality. Weighing only 0.001 kg, the speed nut is lightweight yet robust for use in demanding environments.
KNURLED NUT - 81906850337 suitable for MAN D engines
Robust Knurled Nut with Comparison Number 81906850337Discover the knurled nut, the indispensable product with the comparison number 81906850337. This nut ensures a secure connection in your engines and is precisely designed to meet the demands of maritime and stationary use. Weighing only 0.002 kg, it offers both lightness and robustness.Suitable for MAN D EnginesThis OEM replacement part is suitable for MAN D engines and provides you with the assurance that it consists of high-quality components. As part of our product group of nuts, the knurled nut delivers top-notch performance and supports the longevity of your engines. Rely on quality that lasts!
HEXAGON NUT - 81906850334 suitable for MAN D engines
Robust Hexagon Nut for Demanding ApplicationsDiscover the hexagon nut with the comparison number 81906850334 – a reliable product specifically designed to meet high demands in various applications. This hexagon nut belongs to the article group of nuts and is ideally suited for use in engines. Its lightweight of only 0.14 kg ensures that it can be used without issues in various configurations.Quality that Impresses: Suitable for MAN DThe hexagon nut is suitable for MAN D engines and offers the excellent manufacturing quality that characterizes OEM spare parts. You receive a spare part that optimally meets the specific requirements of your engine. Rely on our experience in providing parts in original equipment manufacturer quality that benefits your fleet.
HEXAGON NUT - 81906850333 suitable for MAN D engines
Hexagon Nut: Your Suitable Replacement PartDiscover our Hexagon nut, listed under the comparison number 81906850333. This precision product is crucial for use in marine and stationary applications. Weighing only 0.01 kg, this nut provides the optimal solution to meet the highest requirements and ensure top performance.Suitable for MAN D Engines – Quality MattersThis OEM replacement part is specifically designed for MAN D engines and represents the ideal option if you value reliability. Since we only sell OEM replacement parts, you can count on the exact fit and high stability. Compared to aftermarket parts, which often vary in quality and fit, our Hexagon nut impresses with its first-class workmanship.
HEX LOCK NUT - 81906850330 suitable for MAN D engines
Precision Product: Hex Collar Lock Nut in DetailDiscover the hex collar lock nut with the comparison number 81906850330 – an important product specifically suited for MAN D engines. This lock nut is an essential component for the optimal function of your diesel and gas engines in marine and stationary applications. Weighing only 0.03 kg, installation is quick and straightforward, ensuring your engines are operational as soon as possible.Standards: OEM Replacement Parts and Their ApplicationOur hex collar lock nut belongs to the category of nuts and provides the stability you expect from an OEM replacement part. By using equipment standards, we ensure excellent fit for your engines. Rely on the quality of the OEM replacement part to support the performance and longevity of your systems.
SPEED NUT - 81906850329 suitable for MAN D engines
Premium Product: Speed Nut ComparisonDiscover our product, the speed nut with the comparison number 81906850329. This speed nut is an essential spare part specifically designed for MAN D engines. Weighing only 0.002 kg, it ensures a reliable connection in your applications. Perfectly suited for demanding projects!Tailored for MAN D EnginesThe speed nut with the comparison number 81906850329 is offered as an OEM spare part, allowing us to ensure the highest quality standards. This OEM spare part is classified in the category of nuts and is precisely designed for your MAN D engines to optimize their efficiency.
HEXAGON NUT - 81906850328 suitable for MAN D engines
OEM Replacement Part for Demanding ApplicationsDiscover our product, the Hexagon nut with the comparison number 81906850328. This OEM replacement part is suitable for MAN D engines and provides you with the quality you expect. Weighing only 0.05 kg, it combines a precise fit and superior strength to meet the high demands of diesel and gas engines.
HEXAGON NUT - 81906850317 suitable for MAN D engines
Hexagon nut with comparison number 81906850317 Discover the hexagon nut with the comparison number 81906850317, an essential OEM spare part compatible with MAN D engines. Weighing only 0.07 kg, this product combines robustness and functionality. It is a crucial component for the maintenance and repair of your engines, ensuring reliable performance in demanding operating environments.
12-POINT COLLAR NUT - 81906850311 suitable for MAN D engines
Robust 12-point collar nut for special applicationsDiscover the 12-point collar nut with the comparison number 81906850311, an excellent OEM spare part designed specifically to create a reliable connection. Weighing only 0.21 kg, this product represents an ideal solution for various technical applications.Suitable for MAN D enginesThis 12-point collar nut is suitable for MAN D engines and belongs to the product group of nuts. Compared to aftermarket solutions, the OEM spare part ensures outstanding fit and quality, which is crucial for the longevity of your engines.
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.