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:
HEXAGON BOLT - 81904900206 suitable for MAN D engines
Reliable Hexagon Bolt 81904900206Discover our reliable OEM replacement part, the hexagon bolt with comparison number 81904900206. This product is specifically designed to meet your requirements in engines. The hexagon bolt design ensures a stable connection in various applications. Our replacement parts are ideal for demanding environments that require maximum performance.Range of Applications: Suitable for MAN D EnginesThe hexagon bolt with comparison number 81904900206 is suitable for MAN D engines. Its careful manufacturing and the materials used make it an ideal choice for those who rely on reliability. Trust in OEM replacement parts that meet the highest manufacturing standards and optimize the efficiency of your engines.
SCREW/BOLT - 81904900204 suitable for MAN D engines
Robust Screw for EnginesDiscover the screw/bolt with the comparison number 81904900204, an essential OEM spare part designed for your MAN D engines. Weighing only 0.008 kg, this screw offers an excellent combination of stability and lightness. It is specifically engineered to support the reliable functioning of your machines.
HEX SHOULDER STUD - 81904900194 suitable for MAN D engines
Reliable Hex Shoulder Stud 81904900194The hex shoulder stud with the comparison number 81904900194 is an essential product for the maintenance and upkeep of your engines. As an OEM replacement part, it offers the perfect fit and quality required for MAN D engines. Weighing only 0.031 kg, this stud ensures a secure and durable connection of components in your engine.Comprehensive OEM Replacement Parts for MAN D EnginesOur range exclusively includes OEM replacement parts suitable for MAN D engines. This hex shoulder stud allows you to reliably meet technical requirements and ensures the functionality of your engines. Trust in the quality and performance that only authentic parts can provide.
ADJUSTING SCREW - 81904900184 suitable for MAN D engines
Adjusting Screw 81904900184 for MAN D EnginesOur adjusting screw with the comparison number 81904900184 is an essential product specifically designed for engines. This OEM spare part impresses with its quality and fit, which are crucial for optimal performance of engines in marine and stationary applications. Weighing only 0.02 kg, this screw is lightweight and comfortable to handle.
ADJUSTING SCREW - 81904900174 suitable for MAN D engines
Adjusting screw suitable for MAN D enginesThe adjusting screw, with the reference number 81904900174, is an essential product you need for your MAN D engines. This OEM spare part impresses with its excellent fit and quality. Weighing only 0.03 kg, the screw is lightweight yet robust, making it ideal for various applications in marine and stationary use.
VENT PLUG - 81904900171 suitable for MAN D engines
Vent plug suitable for MAN D enginesOur vent plug with the comparison number 81904900171 is the ideal OEM replacement part for engines that must meet the highest demands. This product ensures that your engine operates efficiently and reliably and is specifically designed for MAN D engines. By using this vent plug, you enhance the performance of your system.Details on comparison number 81904900171Weighing only 0.013 kg, the vent plug offers optimal functionality without adding unnecessary weight. The comparison number 81904900171 ensures that you acquire an OEM replacement part that integrates perfectly into your engine technology. Rely on this proven quality that is indispensable for marine and stationary applications.
SCREW/BOLT - 81904900165 suitable for MAN D engines
Precise Screw for Your TasksDiscover the screw/bolt with the reference number 81904900165, specially designed for MAN D engines. This screw/bolt is part of our article group of screws and plays a crucial role in the reliable maintenance of your engines. Weighing only 0.013 kg, this product impresses with its ease of handling and high stability.
VENT PLUG - 81904900138 suitable for MAN D engines
Vent Plug 81904900138 in DetailThe vent plug with the comparison number 81904900138 is an essential OEM spare part that plays a significant role in the functionality of engines. It has been manufactured with the highest precision and is the ideal product for professionals looking for durable and reliable spare parts.Suitable for MAN D EnginesThis vent plug is suitable for MAN D engines and ensures that all performance and safety requirements are met. The thoughtful design allows for seamless integration and takes into account the specific needs of engines in marine and stationary applications.
HEXAGON BOLT - 81904900116 suitable for MAN D engines
Reliable Hexagon Bolt for Versatile ApplicationsDiscover the Hexagon bolt with the comparison number 81904900116, specifically designed to be compatible with MAN D engines. This robust bolt belongs to the category of screws and represents an essential OEM spare part that ensures the reliability of your engines. Weighing 0.22 kg, this product offers an optimal combination of stability and functionality.Excellent OEM Spare Part for MAN D EnginesOur Hexagon bolt is an OEM spare part that meets the high standards of the industry. Compatible with MAN D, this product undergoes thorough internal inspection to ensure it meets all quality requirements. This makes our Hexagon bolt an ideal choice for replacement in your engines.
HEX DRIVE SCREW - 81904900115 suitable for MAN D engines
Reliable Hex Drive Screw for High-Performance EnginesDiscover the hex drive screw with the reference number 81904900115, a top-quality OEM replacement part specifically designed for engines. This product is ideally suited to support the functionality of your machines and impresses with its precise fit.
ADJUSTING SCREW - 81904900100 suitable for MAN D engines
Quality Product for Special ApplicationsDiscover the adjusting screw with the comparison number 81904900100, an essential OEM spare part that is perfect for your requirements. This product weighs 0.205 kg and meets high standards of quality and performance. The adjusting screw ensures the reliable functionality of your engines.Suitable for MAN D EnginesThis adjusting screw is suitable for engines and is especially fitting for MAN D. Its robust construction promotes the long-term usability of your engines. Our range includes many OEM spare parts specifically designed for marine and stationary applications.
SCREW PLUG - 81904900094 suitable for MAN D engines
Precise Screw Plug 81904900094Discover the reliable screw plug with the reference number 81904900094, which is suitable for MAN D engines. This OEM replacement part combines the highest precision and quality you can expect from an equipment manufacturer. With a weight of only 0.165 kg, this product is ideally suited for the requirements of diesel and gas engines in various applications.
HEXAGON BOLT - 81904900078 suitable for MAN D engines
Hexagon bolt with comparison number 81904900078Discover the hexagon bolt with comparison number 81904900078, which proves to be an essential OEM replacement part for your engines. This product ensures optimal fitment suitable for smooth operation. Weighing only 0.001 kg, this bolt is easy to handle and helps ensure that your systems function efficiently.
HEXAGON BOLT - 1483451002 suitable for Bosch engines
Hexagon bolt with comparison number 1483451002Discover the Hexagon bolt with the comparison number 1483451002, specifically designed for your requirements. This OEM spare part belongs to the group of screws and offers an ideal solution for use in MAN D engines. Weighing only 0.001 kg, the Hexagon bolt combines robustness and lightness, making it perfect for various applications.Suitable for MAN D enginesThe Hexagon bolt is suitable for MAN D engines and impresses with its precise workmanship. As a high-quality OEM spare part, it ensures a reliable connection that is essential for the smooth operation of your systems. Quality and durability are at the forefront of our product, ensuring your engines always operate optimally.
VENT PLUG - 81904900073 suitable for MAN D engines
Efficient Venting with Comparison Number 81904900073The vent plug with the comparison number 81904900073 is an essential OEM spare part, suitable for MAN D engines. This screw ensures effective venting of the fuel system and supports the reliable performance of your engine. Weighing only 0.007 kg, this product features user-friendly handling, significantly simplifying installation.Quality for Your EnginesAs part of our category of screws, the vent plug offers not only functionality but also safety and durability. The comparison number 81904900073 is valued by many companies that rely on an OEM spare part to optimize the efficiency and safety of their machines. Trust in solutions specifically designed for your needs.
HEX DRIVE SCREW - 81904900066 suitable for MAN D engines
Hex drive screw with reference number 81904900066Discover the hex drive screw with reference number 81904900066, an OEM replacement part that is perfectly suitable. The screw weighs only 0.07 kg and can be optimally integrated into your applications.
HEXAGON BOLT - 81904900061 suitable for MAN D engines
Precision Hexagon Bolt for MAN D EnginesDiscover the Hexagon bolt with the comparison number 81904900061, tailor-made for use in MAN D engines. This spare part impresses with its high precision and craftsmanship, ensuring that your engines operate reliably at all times. With a differentiated weight of only 0.007 kg, this product offers significant advantages in the assembly and maintenance of your machines.Product Details and ApplicationDesigned for marine and stationary use, this component is suitable for MAN D engines of the highest quality. The Hexagon bolt ensures that all components are optimally coordinated. Rely on the precision and durability of these parts when it comes to maintaining your engines.
SCREW PLUG - 81904900058 suitable for MAN D engines
Reliable Screw Plug for Marine and Stationary Applications Discover the screw plug with the comparison number 81904900058, which is optimally suited for your applications. This product is precisely manufactured to meet the demands of engines. Weighing only 0.03 kg, the screw plug is ideal for various areas of use, especially in marine and stationary contexts.OEM Replacement Parts for Strong Engine Performance The use of OEM replacement parts, such as the screw plug with the comparison number 81904900058, ensures consistent quality. Since these products are compatible and meet all manufacturer standards, you benefit from reliable performance and durability. This ensures efficiency for your machines.
CYLINDER SCREW - 81904900028 suitable for MAN D engines
Precise Cylinder Screw for the Highest DemandsDiscover the cylinder screw with the comparison number 81904900028, an indispensable OEM spare part for reliable applications. This cylinder screw belongs to the article group of screws and ensures the highest precision in use. It is not only essential for the functionality of engines but also particularly suitable for demanding maritime applications as well as stationary uses.Optimal Quality for EnginesWeighing only 0.008 kg, this product offers a lightweight yet robust design, ideal for anyone who values long-lasting solutions. As an OEM spare part, the cylinder screw ensures that you receive a perfectly fitting and high-performance component, specifically designed for MAN D engines. Rely on this top-quality part for your infrastructure.
CYLINDER SCREW - 81904900027 suitable for MAN D engines
Cylinder Screw Compatible with MAN D EnginesDiscover the cylinder screw with the comparison number 81904900027, specifically designed as an OEM replacement part. This product is suitable for MAN D engines and ensures a reliable connection between the engine components. With this cylinder screw, you will enhance the performance of your machines.Optimal Fit for Your EnginesWeighing only 0.009 kg, the cylinder screw represents a lightweight yet robust component compatible with MAN D engines. The precise fit ensures a stable connection, thereby supporting the longevity of your engines. Rely on the quality of OEM replacement parts, specifically designed to meet the highest demands.
CYLINDER SCREW - 81904900017 suitable for MAN D engines
Precise Cylinder Screw for Your RequirementsDiscover the cylinder screw with the comparison number 81904900017, an OEM replacement part specifically designed to meet the demands in challenging environments. This cylinder screw is not only an essential component but also contributes to the efficiency and safety in your marine or stationary application.Fit and QualityThis product is compatible with MAN D engines and ensures reliable performance. Weighing only 0.02 kg, the cylinder screw impresses with its thoughtful design and high processing quality, which ensures a long lifespan.
HEX SHOULDER STUD - 81904900013 suitable for MAN D engines
Hex Shoulder Stud: Perfect for Your EnginesOur hex shoulder stud with the comparison number 81904900013 is an essential OEM replacement part designed to enable optimal functionality in engines. This product is suitable for MAN D engines, ensuring you can rely on the highest reliability. Weighing only 0.04 kg, this replacement part impresses with its lightness and robustness.Precision and Quality in ApplicationThe comparison number 81904900013 refers to a hex shoulder stud that is ideally suited for the requirements in marine and stationary technology. Our range includes over 1 million replacement parts, including this hex shoulder stud, tailored to meet your specific needs.
CYLINDER SCREW - 81904416002 suitable for MAN D engines
Cylinder screw suitable for MAN D enginesDiscover the cylinder screw with the comparison number 81904416002 – a premium product specifically designed for engines suitable for MAN D. This cylinder screw is part of the group of screws and impresses with its precise workmanship and excellent quality. Weighing 0.076 kg, it is lightweight and robust, ideal for reliable use in diesel and gas engines.Product of excellent qualityWe offer you this cylinder screw as an OEM replacement part. This cylinder screw in original equipment manufacturer quality ensures a perfect fit for your MAN D engines. Trust in the product that combines durability and efficiency for your machines at an attractive price-performance ratio.
EYE BOLT - 81904415014 suitable for MAN D engines
Reliable Eye Bolt for MAN D EnginesThe eye bolt with the comparison number 81904415014 is an indispensable OEM replacement part, perfectly suited for use in MAN D engines. Weighing only 0.43 kg, this product combines robustness and reliability that are essential for diesel and gas engines used in marine and stationary applications. Benefit from the quality that distinguishes OEM replacement parts.
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.