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 - 81904900711 suitable for MAN D engines
Exquisite Cylinder Screw: Comparison Number 81904900711Experience the precise cylinder screw with the comparison number 81904900711, which is essential for the reliability of your engines. This cylinder screw offers the exact fit required for the high demands in marine and stationary applications. Weighing only 0.011 kg, it is an ideal choice for all applications where performance is essential.
CYLINDER LOCK SCREW - 81904900710 suitable for MAN D engines
Cylinder lock screw for MAN D enginesDiscover the reliable cylinder lock screw with the comparison number 81904900710, specifically designed for use in MAN D engines. This product is an important component found in the category of screws. With a weight of only 0.012 kg, the cylinder lock screw is not only lightweight but also meets the highest standards.Comparison number and OEM spare partsThe comparison number 81904900710 indicates that this OEM spare part is an ideal addition to your machine. Our cylinder lock screw meets the strict requirements of OEM standards and ensures optimal functionality of your engines. Rely on quality that has proven itself.
CYLINDER SCREW - 81904900709 suitable for MAN D engines
Precise Quality: Cylinder Screw 81904900709Discover the cylinder screw with the comparison number 81904900709, an essential product for all users of compatible MAN D engines. This OEM spare part is specifically designed to meet the demands in marine and stationary applications. Weighing only 0.005 kg, the cylinder screw is perfectly suited for use in engines.Trust in OEM ProductsOur cylinder screw is an OEM spare part and meets the high standards of the manufacturer. Unlike aftermarket products, which are often of inferior quality, this product offers the reliability you need to keep your engine-specific system running optimally. It is compatible with MAN D engines and ensures easy integration into your existing infrastructure.
CYLINDER SCREW - 81904900708 suitable for MAN D engines
Robust and Reliable: Cylinder Screw as a Spare PartDiscover the Cylinder Screw, specifically designed as an OEM spare part compatible with MAN D engines. With the comparison number 81904900708, this product offers an essential solution for your engines. This Cylinder Screw is characterized by its durability and ensures optimal performance needed in marine and stationary applications.Precision and Quality: OEM Spare Parts for Your EnginesThe Cylinder Screw is not just a simple component; it ensures that your engine operates efficiently around the clock. As a family-owned business in its second generation, we rely on OEM spare parts that meet the industry’s strict standards. You can trust that the quality of the Cylinder Screw is based on our expertise and is unmatched.
CYLINDER SCREW - 81904900707 suitable for MAN D engines
Discover Our Cylinder Screw: An Essential ComponentExperience the performance of our cylinder screw replacement part with the reference number 81904900707, perfectly suited for MAN D engines. This high quality ensures reliable function and long durability. With a weight of only 0.005 kg, replacing this product is efficient and straightforward.Perfect Component Suitable for MAN D EnginesOur cylinder screw is an important OEM replacement part, specifically designed to be suitable for MAN D engines. Through precise manufacturing and the use of top-quality materials, this product helps keep your machines powerful and reliable.
SCREW/BOLT - 81904900705 suitable for MAN D engines
Precise Screw Suitable for MAN D Engines Discover our top-quality OEM replacement part, the screw with the comparison number 81904900705. This product belongs to the category "Screws" and is specifically designed to meet the highest standards. The screw offers excellent fit and is ideal for use in diesel and gas engines, particularly suitable for applications in marine and stationary technology.Reliable Quality for Engines The OEM replacement part with the comparison number 81904900705 weighs only 0.007 kg. It ensures efficient performance of your engines. Through our strict internal controls, we ensure that every component – including our screw – meets the highest quality requirements. The quality of the product is our commitment to you as a B2B customer.
CYLINDER LOCK SCREW - 81904900704 suitable for MAN D engines
Cylinder lock screw for MAN D enginesDiscover the cylinder lock screw with the comparison number 81904900704, which is specifically suitable for MAN D engines. This essential product ensures maximum reliability in your application area. Weighing only 0.01 kg, the cylinder lock screw can be easily installed and used.Excellent fit and qualityOur cylinder lock screw is an OEM replacement part produced to the highest quality standards. It is designed for MAN D engines and ensures smooth functionality. This product comes exclusively from our carefully selected range of OEM replacement parts, which we have compiled over 25 years of experience in the field of engine spare parts. Trust in our expertise!
PAN-HEAD SCREW M2,5X6 - 81904900698 suitable for MAN D engines
Pan-head screw m2,5x6 – Your SolutionThe pan-head screw m2,5x6 is a top-quality OEM replacement part with the reference number 81904900698. This product is made from durable material and is an essential component for engine maintenance. The precise workmanship ensures reliable functionality in demanding applications.Suitable for MAN D engines – Precision assuredThis OEM replacement part is suitable for MAN D engines and offers you excellent precision. The pan-head screw m2,5x6 has been specially designed to meet high demands in marine and stationary applications. Rely on this product to optimize the efficiency of your engines.
MOUNTING BOLT - 81904900696 suitable for MAN D engines
MOUNTING BOLT with the comparison number 81904900696 suitable for MAN D engines
ADJUSTING SCREW - 81904900684 suitable for MAN D engines
Precise Quality: Adjusting Screw for Reliable EnginesThe adjusting screw with the comparison number 81904900684 is an essential OEM spare part that is perfectly tailored to the requirements of engines in maritime and stationary applications. Weighing just 0.01 kg, it impresses with exceptional stability and performance. This screw supports the efficient operation of your engines and ensures everything runs smoothly.Perfect Fit for MAN D EnginesOur adjusting screw is suitable for MAN D engines and offers the quality that only OEM spare parts can provide. Unlike aftermarket products, this item adheres to the highest standards to ensure an ideal fit and reliability. Trust our expertise in providing solutions for your engines.
CYLINDER SCREW - 81904900682 suitable for MAN D engines
Cylinder Screw as an Essential Product Discover the cylinder screw (comparison number: 81904900682), an essential product suitable for MAN D engines. This OEM spare part offers a precise fit and high reliability, specifically designed for the demands in marine and stationary applications. Trust in the quality that our range provides.Materials for Durability and Reliability The cylinder screw weighs only 0.005 kg, making it easy to handle and speeding up assembly. As part of the OEM spare parts, we ensure that every component, including this cylinder screw, undergoes strict quality controls to provide optimal performance and safety.
CYLINDER SCREW - 81904900678 suitable for MAN D engines
Cylinder screw with comparison number 81904900678Discover our reliable cylinder screw, identified by the comparison number 81904900678. This OEM replacement part is characterized by its precise fit and is ideal for engines used in marine and stationary applications. Weighing only 0.005 kg, this cylinder screw impresses with its robustness and durability – perfect for your needs.Suitable for MAN D enginesOur cylinder screw is an OEM replacement part specially designed to fit MAN D engines. This product belongs to the screws category and is excellently suited for your technical requirements. Don’t compromise on quality; choose this excellent replacement part that reliably supports your engine part system.
CYLINDER SCREW - 81904900677 suitable for MAN D engines
Cylinder screw suitable for MAN D enginesThe cylinder screw with the comparison number 81904900677 is an excellent product for use in engines. This cylinder screw is specifically suitable for MAN D engines and ensures that your engines operate reliably and efficiently. Its precise manufacturing meets the highest quality standards and is an indispensable OEM spare part for any professional workshop.Features that convinceWith a low weight of only 0.006 kg, the cylinder screw demonstrates that robustness and lightness can go hand in hand. This OEM spare part offers durable characteristics that are ideal for the marine and stationary sectors. Rely on this cylinder screw to optimize the performance of your engines.
CYLINDER LOCK SCREW - 81904900670 suitable for MAN D engines
Cylinder Lock Screw Suitable for MAN D EnginesDiscover our Cylinder Lock Screw, marked with the comparison number 81904900670. This OEM replacement part belongs to the article group of Screws and ensures optimal fit. It is suitable for MAN D engines and is perfect for professional applications.Quality and Development in OEM Replacement PartsOur Cylinder Lock Screw as an OEM replacement part stands for high quality and reliability. OEM means that this product precisely matches the manufacturer's specifications. Unlike aftermarket parts, our Cylinder Lock Screw offers durable performance.
PAN-HEAD SCREW - 81904900668 suitable for MAN D engines
Pan-head screw for MAN D enginesDiscover our pan-head screw with the comparison number 81904900668, specially designed to fit MAN D engines. This OEM replacement part ensures excellent quality and a perfect fit, which is essential for the optimal performance of your diesel or gas engine. Weighing only 0.04 kg, the pan-head screw is easy to handle and contributes to the efficiency of your engines.
PAN-HEAD SCREW M8X15-AL-T40 - 81904900667 suitable for MAN D engines
Pan-head screw m8x15-al-t40 for MAN D enginesDiscover the Pan-head screw m8x15-al-t40, an OEM replacement part suitable for MAN D engines. With the comparison number 81904900667, this product ensures optimal fit in various applications. Weighing only 0.008 kg, it is specifically designed for use in diesel and gas engines.
PAN-HEAD SCREW M8X20-AL-T40 - 81904900666 suitable for MAN D engines
Precise Solution for Your EnginesDiscover the OEM replacement part Pan-head screw M8x20-AL-T40, suitable for MAN D engines. With the comparison number 81904900666, you receive a high-quality product specifically designed to meet the demands of your engines.Robust Design for LongevityThe Pan-head screw M8x20-AL-T40 weighs only 0.01 kg and provides the seamless functionality essential for the efficient operation of your machines. As OEM replacement parts, they represent the highest precision and reliability to ensure extended use in your marine and stationary applications.
CYLINDER SCREW - 81904900665 suitable for MAN D engines
Discover Cylinder Screw Compatible with MAN D EnginesDiscover the premium cylinder screw with the comparison number 81904900665, specifically designed to ensure optimal functionality. This OEM spare part is essential for demanding applications. Compatible with MAN D engines, it ensures that your diesel or gas engine operates efficiently and lasts long.Technical Details of the Cylinder ScrewWeighing only 0.005 kg, the cylinder screw is not only lightweight but also robust. It is an essential product for the maintenance and repair of engines. This spare part is ideal for use in various applications, including marine and stationary engines as well as locomotives. Rely on its quality to support the longevity of your MAN D engines.
EXTERNAL HEX ROUND BOLT - 81904900663 suitable for MAN D engines
External hex round bolt with comparison number 81904900663The External hex round bolt with the comparison number 81904900663 is an essential OEM spare part specifically designed for the high demands of compatible with MAN D engines. With its tested quality and functionality, this bolt ensures that your engines operate reliably. This screw weighs only 0.02 kg, making it the ideal component for various applications.
FITTING BOLT - 81904900662 suitable for MAN D engines
Precise Fitting Bolt for Efficient EnginesDiscover the fitting bolt with the comparison number 81904900662, which is suitable for MAN D engines. This OEM replacement part represents high quality and precision to promote the optimal performance of your engines. Weighing only 0.02 kg, this fitting bolt is ideal for various applications in marine and stationary sectors as well as in locomotives.
HEXAGON BOLT - 81904900658 suitable for MAN D engines
Hexagon bolt compatible with MAN D engines The hexagon bolt with the comparison number 81904900658 is a top-quality OEM replacement part specifically designed for MAN D engines. Weighing only 0.09 kg, this product combines stability and functionality in demanding applications.
ADJUSTING SCREW - 81904900657 suitable for MAN D engines
Adjusting screw for optimal engine performanceThe adjusting screw with the reference number 81904900657 is an essential OEM spare part specifically designed to fit MAN D engines. Weighing only 0.02 kg, this product offers the ideal combination of lightness and robustness, supporting reliable applications in marine and stationary environments.
HEXAGON BOLT - 81904900656 suitable for MAN D engines
Hexagon bolt suitable for MAN D enginesDiscover our hexagon bolt with the comparison number 81904900656, specifically designed for applications in MAN D engines. This product is an essential OEM spare part that meets the highest standards of quality and reliability. Weighing only 0.04 kg, the hexagon bolt integrates seamlessly into your engines, ensuring optimal functionality.
CYLINDER SCREW - 81904900653 suitable for MAN D engines
Cylinder Screw for Reliable EnginesDiscover the Cylinder screw with the comparison number 81904900653, an indispensable product for your engine system. Suitable for MAN D engines, this precisely manufactured screw offers optimal fit and helps maximize your engines' performance. Weighing only 0.008 kg, it combines robustness with lightness and is ideal for use in various applications, particularly in marine and stationary settings.OEM Replacement Parts for Best QualityThe Cylinder screw is an OEM replacement part that meets the highest quality standards. Unlike aftermarket products, which often come from less reputable manufacturers, our OEM replacement part ensures durability and reliability that you expect from a manufacturer. This way, you are choosing unadulterated quality for your engines.
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.