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:
SCREW PLUG - 51960020049 suitable for MAN D-engines
Clarity and Functionality: Screw Plug Discover the top-quality screw plug, equipped with the comparison number 51960020049. This OEM replacement part impresses with its unparalleled quality and is perfectly suited for MAN D engines. Strong and durable, the screw is ideal for maintaining your machines.Precise Construction for High Demands The screw plug weighs only 0.007 kg while remaining extremely stable. Through the excellent craftsmanship of the product, it is ensured that all requirements for OEM replacement parts are met. The comparison number 51960020049 makes this part an excellent choice for demanding applications.
THREADED ROD - 51951010002 suitable for MAN D-engines
Versatile Threaded Rod in UseDiscover the threaded rod with the comparison number 51951010002, a product that offers excellent stability and is compatible with MAN D engines. Weighing only 0.09 kg, this OEM replacement part enables reliable use in marine and stationary applications as well as in locomotives.
CONTROL ROD - 51951006045 suitable for MAN D-engines
Reliable Spare Part: Comparison Number 51951006045The control rod with the comparison number 51951006045 is an excellent choice for applications in marine and stationary technology. This product, suitable for MAN D engines, ensures optimal performance control and is characterized by durability. Weighing only 0.195 kg, it is lightweight yet robust, making it ideal for use in demanding conditions.OEM Quality Standard for MAN D EnginesOur spare part is an OEM spare part, meaning it meets the high standards set by the manufacturers. This control rod offers perfect fit and is ideally suited for MAN D engines. Rely on the quality you need to keep your machines operating at their best.
CONTROL ROD - 51951006044 suitable for MAN D-engines
High-Performance Control Rod with Comparison Number 51951006044Discover the control rod with the comparison number 51951006044, an essential OEM spare part designed for MAN D engines. This product offers the precision and reliability you need in technical applications. Weighing only 0.175 kg, the control rod is easy to install.Precision and CompatibilityThanks to the comparison number 51951006044, this product is optimized for a variety of MAN D engines. The focus on quality ensures that the control rod meets stringent standards. Trust in our range of over 1 million spare parts to find the right component for your needs.
CONTROL ROD - 51951006043 suitable for MAN D-engines
Precise Control Rod with Reliable FunctionalityThe Control rod with the comparison number 51951006043 is the spare part you need to enhance the efficiency of your engines. Designed for demanding applications, this product offers functionality and durability. Weighing 0.155 kg, the spare part impresses with flawless craftsmanship.
THREADED ROD - 51951000054 suitable for MAN D-engines
Precise Solution for Ongoing ProjectsDiscover the threaded rod suitable for MAN D engines, with the comparison number 51951000054. This product plays a crucial role in engine maintenance and is ideally suited for applications in maritime and stationary areas as well as locomotives. Weighing only 0.005 kg, this spare part is lightweight yet robust.
THREADED ROD - 51951000047 suitable for MAN D-engines
Robust Threaded Rod for Your Engine ProjectsDiscover the threaded rod with the comparison number 51951000047, an essential OEM spare part for anyone who values perfect quality. This threaded rod belongs to the group of screws and is specifically designed to ensure both stability and precision. The product is suitable for MAN D engines and thus offers an ideal solution for technical maintenance.
THREADED ROD - 51951000044 suitable for MAN D-engines
An essential part for your engines Discover our OEM replacement part, the threaded rod with the comparison number 51951000044. This product is essential for the reliable functioning of your engines and offers perfect accuracy, specifically designed for applications in maritime as well as stationary use.Optimal use with MAN D engines The threaded rod is suitable for MAN D engines and impresses with precise processing and durability. As an OEM replacement part, it meets the highest quality standards and thus contributes to the improved performance of your engines.
THREADED ROD - 51951000021 suitable for MAN D-engines
Trust the comparison number 51951000021Discover our excellent product with the comparison number 51951000021 – a threaded rod specifically designed for motor-operated applications. This screw belongs to the category of screws and provides the support you need for the smooth operation of your engines. Weighing only 0.05 kg, the threaded rod is lightweight yet durable and capable of handling significant loads.OEM Quality and ValueThe threaded rod is an OEM replacement part that ensures longevity and reliability. It is suitable for MAN D engines and has been manufactured to meet the same quality standards as the manufacturer's parts. By using our OEM replacement parts, you benefit from durable components that work perfectly with your engines.
THREADED ROD - 51951000015 suitable for MAN D-engines
Quality Product for Use in Various ApplicationsDiscover our product, the threaded rod with the comparison number 51951000015. This important screw is specially designed to be used easily and reliably in your MAN D engines. Weighing only 0.02 kg, it represents an essential and often overlooked component that supports optimal functionality.Your Trusted OEM Replacement PartThe threaded rod is an OEM replacement part that ensures you receive a product from the manufacturer made of high-quality material. Unlike aftermarket solutions, the standards here are excellent, which can help maintain the long-term performance of your engine. Rely on our OEM replacement parts.
THREADED ROD - 51951000014 suitable for MAN D-engines
Threaded rod suitable for MAN D enginesDiscover our threaded rod suitable for MAN D engines, which offers you not only reliability but also top quality. This product with the comparison number 51951000014 ensures a precise fit and is essential for the operation of your engines. Our expertise and many years of experience ensure that you only receive OEM spare parts that meet the strict requirements of your applications.Excellent precision as OEM spare partOur threaded rod ensures that your engines operate efficiently. It is characterized by durability and high stability, making it an indispensable OEM spare part for repairs. Weighing only 0.02 kg, the comparison number 51951000014 offers optimal properties to meet your demands.
THREADED ROD - 51951000013 suitable for MAN D-engines
Precise Threaded Rod: Your Solution for MAN D EnginesThe threaded rod with the comparison number 51951000013 is an important spare part that offers you reliability and precision. This threaded rod is designed as an OEM spare part and fits perfectly for various applications in MAN D engines. It impresses with its optimal design and a processing that meets the highest standards.Dimensions and Weight for Optimal HandlingThe threaded rod has a lightweight of only 0.072 kg and measures 34 cm in length, 34 cm in width, and 0.6 cm in height. These handy dimensions make the spare part suitable for easy assembly and uncomplicated handling. Optimal connections are essential for the smooth operation of engines, particularly suitable for MAN D.
THREADED ROD - 51951000003 suitable for MAN D-engines
Threaded rod for reliable enginesDiscover the threaded rod with comparison number 51951000003, a top-quality OEM replacement part that meets high standards. This replacement part is suitable for MAN D engines and impresses with its quality and reliability. The threaded rod belongs to the article group screws, which can significantly support the performance of your engine.Ideally suited for MAN D enginesThanks to its targeted manufacturing, the threaded rod is optimized for applications in marine and stationary use. Weighing only 0.038 kg, the product offers a balanced combination of stability and lightness. Thus, you receive a replacement part that is optimally functional, suitable for your MAN D engines.
THREADED ROD - 51951000002 suitable for MAN D-engines
Compelling OEM Replacement Part for EnginesDiscover our threaded rod, an outstanding OEM replacement part with the comparison number 51951000002. This product is ideal for optimizing the performance of your diesel engines. The threaded rod is specifically designed to create a secure connection in your engine application.Suitable for MAN D EnginesThe threaded rod is suitable for MAN D engines and offers the highest quality as well as excellent functionality. With the comparison number 51951000002, you can be sure that the product meets your requirements precisely.
THREADED ROD - 51951000001 suitable for MAN D-engines
Valuable Threaded Rod 51951000001 for Your Engine TechnologyDiscover the threaded rod with the comparison number 51951000001 – a quality product specifically developed for use in engines. This OEM replacement part ensures that your MAN D engines can achieve their maximum performance. Weighing only 0.022 kg, this threaded rod is ideal for various applications within the marine industry and in stationary use.Indispensable Component Suitable for MAN D EnginesThe threaded rod is an indispensable component suitable for MAN D engines. As part of the "Screws" product group, this product meets the highest standards and contributes to the reliable functionality of your engines. Rely on the quality that OEM replacement parts can provide to support the longevity of your engines.
EXTERNAL HEX ROUND BOLT - 51904906001 suitable for MAN D-engines
Precise External Hex Round Bolt for Optimal Engine PerformanceDiscover the external hex round bolt with the comparison number 51904906001, tailored to meet the needs of our customers. This OEM spare part impresses with top-notch craftsmanship and is designed to fit MAN D engines perfectly. Weighing 1.77 kg, this product stands out for its stability and durability.
EXTERNAL HEX ROUND BOLT - 51904906000 suitable for MAN D engines
Precise External Hex Round Bolt – Comparison Number 51904906000The external hex round bolt with comparison number 51904906000 is the ideal replacement part to enhance the efficiency of your MAN D engines. We offer you custom-fit products that are optimally processed, ensuring that your machines can operate reliably. Trust in the quality and precision of our parts, which have been specifically designed.Suitable for MAN D – Preferred Choice for EnginesThis screw is suitable for the series D2876 and engine type D2876LE301. Weighing 0.224 kg and measuring 18.2 cm in length and width and 2.6 cm in height, the external hex round bolt is constructed to meet the highest standards. By using these replacement parts, you significantly enhance the longevity of your motorized equipment.
- 51904900171 suitable for MAN D-engines
Reliable Screw Suitable for MAN D EnginesDiscover the reliable screw (comparison number: 51904900171) from the Bearings category and enjoy the benefits of a high-quality OEM replacement part. This product is specially designed to provide a perfect fit for MAN D engines, ensuring optimal performance and efficiency.Comparison Number 51904900171 for Your ApplicationThe comparison number 51904900171 represents our comprehensive range of OEM replacement parts. This specific screw has been selected to offer the high quality needed to optimize the performance of your engines.
EXTERNAL HEX ROUND BOLT - 51904900166 suitable for MAN D-engines
###Reliable External Hex Round Bolt for MAN D EnginesDiscover the External Hex Round Bolt with the comparison number 51904900166, a reliable OEM spare part, suitable for MAN D engines. This product belongs to the group of "Screws" and meets the highest standards, optimal for diesel and gas engines.
- 51904900160 suitable for MAN D-engines
Outer Hexagon Screw – Your Perfect SolutionDiscover the outer hexagon screw with the comparison number 51904900160. This product is an OEM spare part, categorized under Holders, plates and flanges. This screw is particularly suitable for MAN D engines, offering an exact fit designed for efficient performance.Precise Fit for Special RequirementsThe OEM spare part includes the comparison number 51904900160 and is specifically designed for MAN D engines. Rely on the years of experience of MOPA Motorparts to ensure that your engine operates reliably.
EXTERNAL HEX ROUND BOLT - 51904900159 suitable for MAN D-engines
Reliable Quality in Engine Replacement PartsDiscover our OEM replacement part, the External hex round bolt with the comparison number 51904900159. This reliable product is essential for the operation of engines and has been specifically selected for demanding applications. Our screws provide you with maximum functionality to ensure that engine performance remains optimal.Suitable for MAN D EnginesThis External hex round bolt is suitable for MAN D engines and offers ideal precision. Unlike aftermarket alternatives, our OEM replacement parts provide the assurance of meeting manufacturer specifications.
EXTERNAL HEX ROUND BOLT - 51904900157 suitable for MAN D-engines
Exclusive External Hex Round Bolt in DetailDiscover the External Hex Round Bolt with the comparative number 51904900157 – an indispensable product specifically designed to deliver top-notch performance. This OEM replacement part belongs to the group of screws and ensures that your engines operate reliably.
CYLINDER SCREW - 51904900155 suitable for MAN D-engines
Premium Cylinder Screw for Demanding Engines The cylinder screw with the comparison number 51904900155 is an excellent OEM replacement part. This component is suitable for MAN D engines and supports the reliability of your drive system.Quick Access to Reliable Replacement Parts Our large inventory carries a wide selection of replacement parts, including the cylinder screw with the comparison number 51904900155. This component is suitable for MAN D engines and enables a prompt and efficient response to your requirements.
EXTERNAL HEX ROUND BOLT - 51904900152 suitable for MAN D-engines
External hex round bolt for critical applicationsDiscover our product, the external hex round bolt with the comparison number 51904900152. This OEM replacement part is ideal for technical requirements in engine technology. It represents high quality and is valued for its durability.
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.