Bolt and screw – solutions for marine & industrial
Every engine relies on a secure and vibration-resistant fastening system. A high-quality bolt and screw setup holds together engine blocks, manifolds, and accessories across diesel, gas, and marine systems. In industrial applications, engine screws and motor bolts provide structural stability, resist thermal cycling, and support precision alignment. For marine use, corrosion-resistant marine bolt and marine screws ensure lasting safety even in harsh saltwater environments.
Choose from following:
CYLINDER SCREW - 81900300180 suitable for MAN D engines
Cylinder screw with comparison number 81900300180Discover our cylinder screw with the comparison number 81900300180, an essential OEM spare part specifically designed for engines. This cylinder screw is a reliable component that works optimally in MAN D engines, ensuring that your machines operate with the highest efficiency.
CYLINDER LOCK SCREW - 81900300178 suitable for MAN D engines
Cylinder lock screw for MAN D engines Discover the cylinder lock screw with the reference number 81900300178, an essential OEM spare part specifically designed for MAN D engines. This cylinder lock screw ensures a perfect fit and functionality, allowing your machines to operate reliably.Secure hold for your machines Weighing only 0.01 kg, the product offers easy handling and simple installation. The cylinder lock screw ensures that all components stay securely in place and that your engines work efficiently. This OEM spare part impresses with quality and durability – ideal for all B2B customers.
CYLINDER SCREW - 81900300176 suitable for MAN D engines
Precision and Quality: Selecting Cylinder ScrewDiscover the cylinder screw with the comparison number 81900300176, an essential OEM replacement part that offers reliability and longevity. This cylinder screw weighs only 0.008 kg and is an indispensable component for your engine applications. It is specifically designed to meet the demands of engines in marine and stationary applications.Suitable for MAN D EnginesThe cylinder screw is suitable for MAN D engines and ensures that your engine operates under optimal conditions. As a proven OEM replacement part, it meets the highest standards and ensures efficient and reliable performance. Rely on our many years of experience in providing replacement parts.
CYLINDER LOCK SCREW - 81900300174 suitable for MAN D engines
Cylinder Lock Screw with comparison number 81900300174Discover the cylinder lock screw with the comparison number 81900300174, an essential OEM spare part that is ideal for MAN D engines. Weighing only 0.18 kg, this product offers the perfect combination of stability and lightness to efficiently execute your project.Reliable OEM Spare Parts for Optimal UseThis OEM spare part is compatible with MAN D and impresses with its precise quality. Unlike aftermarket parts, which often lack the necessary precision, our OEM spare parts are designed for durability and maximum performance. Rely on the comparison number 81900300174 to ensure optimal support for your engines.
CYLINDER SCREW - 81900300169 suitable for MAN D engines
Cylinder screw compatible with MAN D enginesDiscover the cylinder screw with the comparison number 81900300169, an indispensable spare part for the efficient operation of your engines. This product provides optimal connection and stability for applications in the marine and stationary machinery industry. Weighing just 0.01 kg, this cylinder screw is not only lightweight but also exceptionally robust.Quality through OEM spare partsThe precisely manufactured OEM spare part meets strict quality standards and ensures long-term reliability. This cylinder screw is compatible with MAN D engines and ensures that your machines operate efficiently. Rely on spare parts to maximize the performance of your engines and minimize downtime.
CYLINDER SCREW - 81900300167 suitable for MAN D engines
Excellent Cylinder Screw Suitable for MAN D EnginesDiscover the cylinder screw with the comparison number 81900300167, an indispensable product that is ideally suited for use in MAN D engines. This spare part ensures that your engines consistently operate reliably and powerfully. With precise fitment, the screw is a crucial component for the longevity of your engines.Precise Fit for Highest DemandsThis cylinder screw is designed to be suitable for MAN D models and weighs only 0.005 kg. Every spare part undergoes rigorous internal controls to ensure the highest quality standards. Trust this product to optimize the efficiency of your marine and stationary engine operations.
CYLINDER LOCK SCREW - 81900300166 suitable for MAN D engines
Cylinder lock screw with comparison number 81900300166Discover the cylinder lock screw with the comparison number 81900300166, specially developed as an OEM replacement part for your engines. This product is suitable for MAN D engines and ensures outstanding quality and reliability that you need in the performance of your diesel or gas engines. Weighing only 0.008 kg, this cylinder lock screw is not only lightweight but also highly functional.
CYLINDER LOCK SCREW - 81900300164 suitable for MAN D engines
Cylinder Lock Screw: Precision for Your EnginesDiscover the cylinder lock screw with the comparison number 81900300164, a crucial component for reliable assembly in engines. This OEM spare part offers the quality you need for demanding applications. Weighing only 0.02 kg, it optimizes handling while meeting strong demands.Suitable for MAN D: Precise SolutionsThis cylinder lock screw is suitable for MAN D engines and ensures that your engines operate efficiently. As an OEM spare part, it provides the safety and functionality you expect from top-notch components. Rely on the durability and functionality of this product.
CYLINDER LOCK SCREW - 81900300163 suitable for MAN D engines
Cylinder Lock Screw in FocusDiscover the Cylinder Lock Screw, an indispensable OEM replacement part, distinguished by the comparison number 81900300163. This Cylinder Lock Screw is a fundamental component required for a variety of industrial applications, offering the highest quality and reliability.Suitable for MAN D Engines The Cylinder Lock Screw is suitable for MAN D engines and meets the strict requirements of the manufacturers. Weighing only 0.01 kg, this product is specifically designed for long-lasting use. Rely on the OEM replacement parts necessary to ensure the efficiency and functionality of your engines.
CYLINDER LOCK SCREW - 81900300162 suitable for MAN D engines
Essential Product: Cylinder Lock ScrewThe cylinder lock screw is an essential product, suitable for MAN D engines. With the comparison number 81900300162, this OEM replacement part ensures that your engines always function optimally. The precise workmanship of the screw establishes a reliable connection and therefore the highest operational safety in demanding applications.Reliability and FunctionalityThis OEM replacement part weighs only 0.12 kg, allowing for easy handling. The cylinder lock screw is indispensable for the maintenance and repair of your engines and impresses with its durability and resilience. Its simple installation makes it the ideal companion for all applications that rely on quality.
CYLINDER LOCK SCREW - 81900300160 suitable for MAN D engines
Cylinder Lock Screw – Optimal FitDiscover the Cylinder Lock Screw with the comparison number 81900300160, an essential OEM spare part. This Cylinder Lock Screw secures the correct attachment of components in engines, providing you with reliability and safety in application. It impresses with its excellent fit and is therefore perfectly suitable for use in demanding environments.Suitable for MAN D Engines – Your Solution for LongevityThis Cylinder Lock Screw weighs only 0.04 kg, making it not only lightweight but also easy to handle. As an OEM spare part, it offers you the quality that you expect from products compatible with MAN D engines. Rely on original equipment manufacturer quality to optimize the lifespan and performance of your engines.
CYLINDER LOCK SCREW - 81900300159 suitable for MAN D engines
Cylinder lock screw with comparison number 81900300159Discover the cylinder lock screw with the comparison number 81900300159, specially designed to meet your needs. This OEM spare part offers a perfect fit and robustness. Weighing only 0.031 kg, it provides the necessary stability for your engines in marine and stationary applications.Perfect fit for MAN D enginesThe cylinder lock screw is made to fit MAN D engines and is characterized by its high quality. At MOPA Motorparts, we ensure that each of our OEM spare parts undergoes rigorous internal controls to maintain the highest standards. Trust that we only offer you the best products for maintaining your machines.
CYLINDER LOCK SCREW - 81900300158 suitable for MAN D engines
Reliable OEM Replacement Part for EnginesThe cylinder lock screw with the comparison number 81900300158 is an essential OEM replacement part that meets the highest standards. Weighing only 0.04 kg, this product is ideal for ensuring the stability of your engines. It has been designed to be optimally utilized for the performance requirements of engines.Suitable for MAN D EnginesThis cylinder lock screw is suitable for MAN D engines and ensures that all internal engine components are securely connected. By using OEM replacement parts like this product, you can ensure that you always receive quality tailored to the specific needs of your machines. The comparison number 81900300158 represents the reliability you desire.
CYLINDER LOCK SCREW - 81900300157 suitable for MAN D engines
Cylinder lock screw with comparison number 81900300157Discover the cylinder lock screw with comparison number 81900300157 – the ideal replacement part for your diesel and gas engines. This cylinder lock screw is an essential component that ensures your engines function optimally. Thanks to its robust construction, it offers safety and reliability that are essential for use in various applications.Effective solutions for MAN D enginesOur cylinder lock screw is suitable for MAN D engines, which means it meets high quality standards. As an OEM replacement part, it provides the perfect complement for your engines and ensures a precise fit. Weighing only 0.03 kg, this product combines lightweight and stability to ensure long-term performance.
CYLINDER LOCK SCREW - 81900300156 suitable for MAN D engines
Cylinder lock screw with comparison number 81900300156 Discover the cylinder lock screw with comparison number 81900300156 – an essential OEM replacement part for the maintenance of your engines. This product provides the necessary stability and safety in your engine operation. Weighing only 0.15 kg, the screw is easy to handle yet robust enough for demanding applications.Optimally suitable for MAN D engines This OEM replacement part is suitable for MAN D engines and offers reliable functionality due to its precise workmanship. The cylinder lock screw is specifically designed to meet the requirements of diesel and gas engines, making it ideal for maritime and stationary applications.
CYLINDER SCREW - 81900300155 suitable for MAN D engines
Cylinder Screw: Your Reliable Replacement PartDiscover our outstanding product: the Cylinder screw with the comparison number 81900300155. This OEM replacement part impresses with its top-notch quality and is specifically designed for MAN D engines. At MOPA Motorparts, we place great importance on the availability of replacement parts to ensure the long-term performance and reliability of your engines.Light and Essential for EnginesWeighing only 0.012 kg, this Cylinder screw is an indispensable component that is optimally suited for the operation of your diesel and gas engines. Rely on our decades of expertise when it comes to providing OEM replacement parts precisely tailored to the requirements of your MAN D engines.
CYLINDER LOCK SCREW - 81900300153 suitable for MAN D engines
Cylinder lock screw: Reliability in Every EngineDiscover the cylinder lock screw (comparison number: 81900300153), an essential component for reliable assembly in your engines. This cylinder lock screw is suitable for MAN D engines and ensures that all components are securely and stably connected. Weighing 0.18 kg, it provides the necessary stability and efficiency in application.
CYLINDER SCREW - 81900300151 suitable for MAN D engines
Cylinder screw with comparison number 81900300151Discover the cylinder screw with the comparison number 81900300151, suitable for MAN D engines. This product combines stability and lightness with a weight of only 0.02 kg and is perfectly tailored to the requirements for marine and stationary applications. Rely on the high-quality cylinder screw that provides essential functionality for your engines.
CYLINDER SCREW - 81900300150 suitable for MAN D engines
Cylinder screw 81900300150 for reliable enginesThe cylinder screw with the comparison number 81900300150 is a quality OEM replacement part specifically designed to ensure consistent performance. Weighing 0.25 kg, this product provides the necessary stability and durability that is important for the operation of engines. This replacement part is perfectly suited for various applications in marine and stationary use.
CYLINDER SCREW - 81900300148 suitable for MAN D engines
Cylinder Screw – Your Reliable ChoiceDiscover the cylinder screw with the comparison number 81900300148, which is optimally tailored to the requirements of your MAN D engines. This product belongs to the category of screws and stands out with precise processing that ensures secure fastening in your engines. Experience how this cylinder screw combines both robustness and reliability.
CYLINDER SCREW - 81900300147 suitable for MAN D engines
Cylinder screw suitable for MAN D – Your reliable productThe cylinder screw with the comparison number 81900300147 is a crucial OEM spare part that we offer you. This screw is excellent for secure fastening and plays an essential role in the stability of engines. It has been designed to meet the specific requirements of machines, making it ideal for a wide range of applications.Quality and precision for MAN D enginesThis OEM spare part is specifically suitable for MAN D engines. Weighing only 0.005 kg, the cylinder screw impresses with its handy and efficient design. Its development is oriented towards the highest standards, significantly enhancing the reliability and durability of your engines.
CYLINDER LOCK SCREW - 81900300146 suitable for MAN D engines
Precise Cylinder Lock Screw with Comparison Number 81900300146Experience the cylinder lock screw with the comparison number 81900300146, an essential OEM spare part specifically designed to ensure a precise fit for MAN D engines. Weighing only 0.13 kg, this cylinder lock screw ensures that all cylinder components are reliably held together, optimizing the performance of your engines.Perfect Fit for EnginesThis cylinder lock screw is suitable for MAN D engines and represents durability and reliability. In our group of screws, you will find a variety of OEM spare parts specifically designed for demanding applications in marine and stationary areas. The excellent material selection ensures that you can rely on the functionality of your engine.
CYLINDER SCREW - 81900300145 suitable for MAN D engines
Precise Cylinder Screw for EnginesDiscover the cylinder screw with the comparison number 81900300145, an essential product for your engine maintenance. This OEM replacement part is specifically designed for MAN D engines and impresses with its excellent fit. Trust in quality that ensures long-lasting performance and keeps your machines running efficiently.
CYLINDER SCREW - 81900300143 suitable for MAN D engines
Cylinder Screw: Key Component for High-Performance EnginesDiscover the cylinder screw with the comparison number 81900300143, an essential product that ensures the efficiency of your engines. This cylinder screw is specifically designed to be reliably used in various applications. Weighing only 0.008 kg, it impresses with its robustness and versatility.OEM Spare Parts for Efficient EnginesThe cylinder screw with the comparison number 81900300143 is a premium OEM spare part that offers outstanding quality. It is suitable for MAN D engines and meets the highest standards. By using our OEM spare parts, you can optimize the functionality of your engines while relying on proven quality.
What are bolts and screws used for in engine systems?
A bolt and screw is used to fasten components under mechanical stress. This includes cylinder heads, pumps, intake manifolds, mounts, and brackets. Engine bolt assemblies require high tensile strength and precise thread profiles to prevent loosening under load. In marine settings, bolts marine configurations include additional corrosion protection through zinc coatings, stainless alloys, or composite heads. Whether for permanent fastening or removable joints, motor screws and bolts form the basis of structural integrity in all engine types.
Function and benefits of bolts and screws in engines
- Secure static and dynamic connections across engine assemblies
- Resist vibration, pressure, and thermal expansion
- Support torque retention and load distribution
- Enable safe disassembly for maintenance and inspection
- Allow modular engine construction with standard sizes
In both land-based and marine power units, engine screws and motor bolt types are selected for load class, material strength, and thread pitch. Using the right bolt and screw combination reduces failure risks and simplifies service procedures.
Types and materials of marine and engine fasteners
- Hex head and flange bolts for structural engine joints
- Socket head motor screws for precision components
- Thread-locking marine screws for hull or motor mounts
- High-strength engine bolt sets with graded coatings
- Marine bolt systems with stainless steel or brass
Bolts marine assemblies often use A4 stainless or Duplex steel, ensuring protection against seawater and galvanic reactions. Motor screws in enclosed spaces may use black oxide or phosphate finishes for corrosion protection and ease of removal. Material selection depends on torque level, accessibility, and contact with fluids or chemicals.
Compatibility and sourcing
We offer fastening solutions suitable for MTU, Deutz, MAN, Volvo Penta, and MWM. Whether you're rebuilding a turbo mount, re-securing an exhaust manifold, or replacing critical head bolts, our bolt and screw range fits a wide variety of marine and industrial engines. We stock bolts by dimension, thread, material, and application group.
Thanks to our well-equipped warehouse and fast delivery options, we offer short lead times and quick availability for both standard and application-specific fasteners.
Use cases in industrial and marine applications
Marine screws are often used for water-cooled exhaust, hull penetrations, and engine bed mounting. Motor bolt sets are required for rotating assemblies and timing covers. Across applications, the right engine bolt and screw setup ensures alignment under thermal expansion and torque loading. For boats, hose adapter brackets, alternators, and gearboxes also require vibration-resistant marine bolt systems with low galling and secure locking.
Buying advantages with us
Our B2B shop provides:
- Fast worldwide shipping via DHL Express
- Material and strength class selection support
- Easy ordering for bulk or precision fasteners
We supply OEM-standard bolt and screw combinations for maintenance, repairs, or assembly upgrades. With practical kit options and single part selection, technicians can easily match specs during overhauls or engine conversions.
Related components to bolt and screw systems
Complementary items often include washers, retaining rings, thread-locking pastes, brackets, and custom spacers. These elements contribute to torque stability and fastener longevity in both mobile and stationary engines. A correct bolt and screw setup is fundamental to safe operation.
Frequently asked questions about bolts and screws
What is a screw?
A screw is a threaded fastener designed to be inserted into material or a pre-threaded hole to hold components together.
What is the difference between a bolt and a screw?
A bolt typically works with a nut and is used through unthreaded holes, while a screw forms its own thread or fits into a tapped hole.