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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.

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HEXAGON NUT - 88920100018 suitable for MAN D engines

HEXAGON NUT - 88920100018 suitable for MAN D engines

Robust Hexagon Nut for Your Engine SolutionsDiscover the hexagon nut with the comparison number 88920100018, an essential product that performs excellently in the category of nuts for your applications. Weighing only 0.03 kg, this hexagon nut offers an ideal combination of lightness and strength. It is perfectly suited for use in engines that place high demands on part quality.Suitable for MAN D Engines – Quality That ConvinceThe hexagon nut is compatible with MAN D engines and allows for seamless integration into your existing systems. Manufactured as an OEM replacement part under strict standards, it provides the required reliability for marine and stationary applications. Through our internal controls, we ensure that each component meets the highest requirements.

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HEX LOCK NUT - 88906850202 suitable for MAN D engines

HEX LOCK NUT - 88906850202 suitable for MAN D engines

Reliable Hex Collar Lock Nut for Your ApplicationsDiscover the hex collar lock nut with the comparison number 88906850202, an essential OEM spare part for your engines. This product is suitable for MAN D engines and is characterized by excellent fit and high load capacity. Weighing only 0.01 kg, it is ideal for use in various applications, whether in the maritime sector or in stationary engines.Precision and QualityOur hex collar lock nut is an OEM spare part that meets the highest quality standards. Suitable for MAN D engines, this component ensures a long-lasting and secure connection. Using this nut helps ensure that your engines function reliably at all times. Trust in a product that has been specifically manufactured for the demanding requirements of your industry.

Sale price: €2.39Regular price:€2.65(10% saved)
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SPEED NUT - 88906850021 suitable for MAN D engines

SPEED NUT - 88906850021 suitable for MAN D engines

Speed nut suitable for MAN D enginesDiscover the speed nut with the comparison number 88906850021, a top-quality OEM replacement part specifically designed for engines. This product impresses with its perfect fit and reliability in use.Replacement parts for MAN D enginesThis speed nut is suitable for MAN D engines and is designed to the highest standards of original equipment manufacturer quality. It ensures that all connections in your engine function optimally and that nothing is left to chance.

HEXAGON NUT - 88906850019 suitable for MAN D engines

HEXAGON NUT - 88906850019 suitable for MAN D engines

Efficient Hexagon Nut for Your Engine ApplicationsDiscover the Hexagon nut with the comparison number 88906850019, an essential product for your engines. This OEM replacement part offers stability and reliability to optimize the performance of your diesel and gas engines. The Hexagon nut is specifically suitable for marine and stationary applications.

ANNULAR NUT - 88906850007 suitable for MAN D engines

ANNULAR NUT - 88906850007 suitable for MAN D engines

Annular nut suitable for MAN D enginesThe annular nut with the reference number 88906850007 is an indispensable OEM spare part that has been specifically designed to be suitable for MAN D engines. This annular nut ensures optimal performance and reliability of your engines. Robust materials provide a long service life and stability.Fit for enginesOur OEM spare parts always offer the best fit. The annular nut is ideal for use in various applications and machines that are suitable for MAN D engines. You can rely on the quality of products backed by over 25 years of experience.

HEXAGON NUT - 88906400201 suitable for MAN D engines

HEXAGON NUT - 88906400201 suitable for MAN D engines

Precise Hexagon Nut for Reliable Engine ApplicationsDiscover the hexagon nut with the comparison number 88906400201, an essential product for your engines. As part of our product group "Nuts," this OEM spare part is manufactured to fit MAN D engines. This robust component ensures optimal fastening and durability, which are essential in demanding environments.

HEXAGON NUT - 88905010013 suitable for MAN D engines

HEXAGON NUT - 88905010013 suitable for MAN D engines

Robust Hexagon Nut for the Highest DemandsDiscover the hexagon nut with the comparison number 88905010013, an OEM spare part specifically designed to meet the requirements of MAN D engines. This hexagon nut provides an optimal connection and durability for all engine applications.

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NUT - 88459050063 suitable for MAN D engines

NUT - 88459050063 suitable for MAN D engines

Precision Product: Comparison Number 88459050063Discover our product with the comparison number 88459050063, an essential Nut needed for the reliable operation of MAN D engines. This Nut belongs to the article group of Nuts and is specially manufactured to ensure precise fit and function. Weighing only 0.004 kg, it is a lightweight yet durable solution that ensures a long lifespan in demanding applications.Suitable for MAN D Engines: Your SolutionThe Product with the comparison number 88459050063 is optimally designed to deliver perfect results in MAN D engines. Suitable for these specific engines, the Nut meets the highest standards set by OEM spare parts. Trust in our quality to ensure that your engines operate efficiently.

Sale price: €3.50Regular price:€3.89(10% saved)
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NUT - 8735890423 suitable for MTU engines

NUT - 8735890423 suitable for MTU engines

OEM Replacement Part Suitable for MTU EnginesDiscover our product with the comparison number 8735890423, a nut that is ideally suited for MTU engines. As an OEM replacement part, it offers an exact fit and reliable performance associated with a part customized to the manufacturer.Excellent Fit for EnginesThis OEM replacement part is specifically designed to be 100% compatible with MTU engines. Unlike aftermarket products, our OEM replacement part provides top-quality that keeps your engines running efficiently. Trust in our expertise in the field of engines and experience the benefits of the right parts.

Sale price: €347.65Regular price:€386.28(10% saved)
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HEXAGON NUT - 2123300002 suitable for Bosch engines

HEXAGON NUT - 2123300002 suitable for Bosch engines

Efficient Hexagon Nut Compatible with MTU Engines Discover the hexagon nut with the comparison number 2123300002, a multifunctional OEM spare part designed for MTU engines. This hexagon nut belongs to the product group "Nuts" and offers impressive accuracy that meets the demands of marine and stationary applications.

Sale price: €2.96Regular price:€3.29(10% saved)
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NUT - 8699900111 suitable for MTU engines

NUT - 8699900111 suitable for MTU engines

Precise Nut for Your Engine Applications Discover the nut with the reference number 8699900111, which is an essential OEM replacement part. This product is suitable for MTU engines and offers optimal functionality. Trust that our OEM replacement part will be efficiently integrated into your engines to ensure longevity and performance.Suitable for MTU Engines – Efficient Solution Our nut belongs to the group of nuts and is an essential component for engines, compatible with various applications. Designed to meet the highest standards, this replacement part is the perfect solution for your engine challenges.

Sale price: €47.95Regular price:€53.27(10% saved)
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HEXAGON NUT - 1103300005 suitable for Bosch engines

HEXAGON NUT - 1103300005 suitable for Bosch engines

Hexagon nut with comparison number 1103300005Discover the hexagon nut with the comparison number 1103300005, an essential OEM replacement part for your engines. This product is suitable for MTU engines and provides you with the reliability and performance you need.

Sale price: €1.85Regular price:€2.05(10% saved)
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HEXAGON NUT - 1413300025 suitable for Bosch engines

HEXAGON NUT - 1413300025 suitable for Bosch engines

Hexagon Nut for Optimal Engine PerformanceThe hexagon nut with the comparison number 1413300025 is an essential replacement part specifically designed to be suitable for MTU engines. This product ensures a secure and precise connection of the individual engine components. Our replacement parts offer the reliability you can expect from a leading provider like MOPA Motorparts.Suitable Component – Safe and ReliableThe hexagon nut belongs to the article group of nuts and is an indispensable element in the construction of engines. The comparison number 1413300025 ensures that you receive a suitable component for your MTU engines that meets your requirements and fulfills the highest standards.

Sale price: €537.57Regular price:€597.30(10% saved)
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SLEEVE NUT - 2423315001 suitable for Bosch engines

SLEEVE NUT - 2423315001 suitable for Bosch engines

Sleeve Nut: The Solution for Marine Engine ApplicationsDiscover the sleeve nut with the comparison number 2423315001, an essential product for engines in marine and stationary technology. This sleeve nut is compatible with MTU engines of the series 331, specifically for the engine type 12V331TC92. Its precise construction ensures a reliable connection that meets the highest standards.

Sale price: €131.30Regular price:€145.89(10% saved)
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NOZZLE CAP NUT - 2433349402 suitable for Bosch engines

NOZZLE CAP NUT - 2433349402 suitable for Bosch engines

Nozzle Cap Nut: A Necessary OEM Spare PartThe nozzle cap nut with the comparison number 2433349402 is an essential OEM spare part for professionals who rely on performance. This nozzle cap nut belongs to the group of nuts and provides the perfect solution for applications that require top-notch precision. In particular, this product is suitable for MTU engines of the series 1163 and is specifically designed for the engine type 20V1163TB82.Compact Dimensions and WeightWith a weight of only 0.222 kg and compact dimensions of 6.4 cm in length, 6.4 cm in width, and 4.4 cm in height, this nozzle cap nut is not only lightweight but also very efficient in use. The comparison number 2433349402 allows for easy identification of the product and ensures that you choose the right OEM spare part for your MTU engines. Rely on the excellent fit that provides you with effortless installation and maintenance.

Sale price: €274.95Regular price:€305.50(10% saved)
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HEXAGON NUT - 2433300021 suitable for Bosch engines

HEXAGON NUT - 2433300021 suitable for Bosch engines

Quality of the Hexagon Nut for EnginesDiscover the hexagon nut with the comparison number 2433300021, an essential product for your business. This OEM replacement part represents the highest standards in quality and is specifically designed to optimize engine performance. Weighing only 0.008 kg and with compact dimensions of 1.9 cm in length, 1.9 cm in width, and 0.7 cm in height, this hexagon nut is ideal for more efficient applications.

Sale price: €13.74Regular price:€15.26(10% saved)
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NUT - 2433349514 suitable for Bosch engines

NUT - 2433349514 suitable for Bosch engines

NUT with the comparison number 2433349514 suitable for Bosch engines

Sale price: €42.12Regular price:€46.80(10% saved)
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KNURLED NUT - 85906800001 suitable for MAN D engines

KNURLED NUT - 85906800001 suitable for MAN D engines

Knurled Nut for Optimal ConnectionsDiscover the knurled nut with the comparison number 85906800001, an essential product for your engines. This OEM spare part ensures a reliable connection and is specifically designed for MAN D engines. Weighing only 0.01 kg, this knurled nut can be easily installed and ensures effective functioning of your systems.

Sale price: €7.38Regular price:€8.20(10% saved)
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COLLAR NUT - 85906400001 suitable for MAN D engines

COLLAR NUT - 85906400001 suitable for MAN D engines

Premium Collar Nut for Marine ApplicationsThe collar nut with the reference number 85906400001 is an essential OEM spare part specifically designed for the needs of engines. Weighing only 0.16 kg, it provides a reliable connection in demanding applications. This product is suitable for modern MAN D engines and meets the highest quality standards.Quality and Precision in Engine OperationThe reference number 85906400001 confirms that the collar nut is an authentic OEM spare part that ensures your engines operate under optimal conditions. This component is ideal for applications in the marine and stationary industries and contributes to the longevity and efficiency of your system. Trust in quality tailored to the needs of suitable for MAN D engines.

ACORN NUT - 85600012716 suitable for MAN D engines

ACORN NUT - 85600012716 suitable for MAN D engines

Optimal Spare Part for Your Engine ProjectDiscover our reliable Acorn nut product with the comparison number 85600012716, specifically designed to work seamlessly with MAN D engines. Weighing only 0.005 kg, this Acorn nut provides the necessary stability and precision for your engine.

HEXAGON NUT - 85600011689 suitable for MAN D engines

HEXAGON NUT - 85600011689 suitable for MAN D engines

Efficient Hexagon Nut Compatible with MAN D EnginesDiscover the hexagon nut with the comparison number 85600011689, which offers custom quality for your needs. This product is specifically suitable for MAN D engines and falls under the category of nuts. Its lightweight of only 0.01 kg makes it ideal for use in marine and stationary applications.OEM Replacement Parts for Durable PerformanceThis hexagon nut is a reliable OEM replacement part characterized by perfect fit. Using OEM replacement parts ensures that your engines operate efficiently. Trust the manufacturer's standards to extend the lifespan of your machines.

NUT - 85600009370 suitable for MAN D engines

NUT - 85600009370 suitable for MAN D engines

Precise Nut for Demanding ApplicationsDiscover the nut with the comparison number 85600009370, specifically designed for the demands of engines. This OEM replacement part is suitable for MAN D engines and provides the reliability you need for your projects. Weighing only 0.02 kg, the product is easy to handle and allows for straightforward installation.

WING NUT - 85600008000 suitable for MAN D engines

WING NUT - 85600008000 suitable for MAN D engines

Wing Nut (Comparison Number: 85600008000) for EnginesExperience the wing nut (comparison number: 85600008000), an essential OEM replacement part for various applications in engine technology. Weighing only 0.03 kg, this product offers a reliable solution for your needs. Rely on this replacement part to ensure safety and functionality in your operations.Compatible with MAN D EnginesThis wing nut is suitable for MAN D engines. The carefully crafted OEM replacement part ensures a perfect fit and durability. The wing nut is an indispensable component to enable precise fastenings within your engine system. Trust in quality to meet the demands of marine and stationary applications.

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SPEED NUT - 85600006938 suitable for MAN D engines

SPEED NUT - 85600006938 suitable for MAN D engines

Premium Speed Nut: Your Reliable Replacement Part Discover the speed nut with the comparison number 85600006938 – a top-quality product from the category nuts, specifically designed for engines. This OEM replacement part weighs only 0.01 kg and possesses the ideal characteristics to meet the requirements of engines.Reliability for Compatible with MAN D Engines This replacement part is compatible with MAN D engines and ensures that your engines perform smoothly under demanding conditions. With the comparison number 85600006938, you receive an OEM replacement part that meets the highest standards and seamlessly integrates into your existing system.

Sale price: €0.26Regular price:€0.29(10% saved)
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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.

Screw nuts for industrial and marine engines – engine nut, motor nut, mechanical nuts, mechanic nuts – OEM replacements

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.

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