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:
HEX COLLAR BOLT - 81904050166 suitable for MAN D engines
Reliable Product: Hex Collar BoltDiscover our Hex collar bolt, which is marked with the comparison number 81904050166 and meets the highest standards as an OEM replacement part. This product is essential for reliable function in modern engines and is precisely developed for the requirements of your machines. The combination of durability and precise manufacturing makes this screw the ideal choice for use in demanding applications.
HEX COLLAR BOLT - 81904050165 suitable for MAN D engines
Reliable Product: Hex Collar BoltDiscover our Hex Collar Bolt, the product with the comparison number 81904050165, specifically designed for use in diesel and gas engines. This spare part ensures a secure fastening in your machines and supports optimal performance. Weighing just 0.11 kg, this bolt is easy to handle and suitable for various applications.Quality of OEM Spare PartsOur Hex Collar Bolt is a top-quality OEM spare part that meets the highest quality standards. The meticulous manufacturing allows for a perfect fit and durability, which is especially important for engines. Our products are compatible with renowned manufacturers such as MWM, Mercedes-Benz, Deutz, MAN, Volvo, MTU, Bosch, and Detroit Diesel.
HEX COLLAR BOLT - 81904050164 suitable for MAN D engines
Excellent Hex Collar Bolt for Demanding EnginesDiscover our OEM replacement part, the Hex Collar Bolt with the replacement number 81904050164, specifically designed to work optimally with MAN D engines. This product impresses with excellent fit and robustness, ideal for demanding applications in marine and stationary areas.Reliable Quality and AccuracyThe replacement number 81904050164 ensures that this OEM replacement part is perfectly suited for MAN D. Weighing only 0.14 kg, the Hex Collar Bolt combines stability and performance, which is crucial for the functionality of your engines. Trust in the quality that your engine deserves!
HEX COLLAR BOLT - 81904050163 suitable for MAN D engines
Hex Collar Bolt for Your EnginesDiscover the hex collar bolt with the comparison number 81904050163, which offers you the perfect solution for your applications. This OEM replacement part is essential for the maintenance of your engines and ensures the highest quality. Weighing only 0.13 kg, the hex collar bolt is easy to handle and ideal for a stable fit in various applications.
HEX COLLAR BOLT - 81904050162 suitable for MAN D engines
Hex Collar Bolt for Your RequirementsThe hex collar bolt with the reference number 81904050162 is an essential product in the industry. Weighing just 0.13 kg, this screw offers an excellent combination of robustness and lightness. This spare part is suitable for MAN D engines and ensures a reliable connection of components.Quality You Can Rely OnThe hex collar bolt meets the highest standards and is manufactured as a spare part. It is suitable for MAN D engines and impresses with its excellent workmanship. Every product you purchase from us represents durability and readiness, allowing you to depend on the performance of your machines.
HEX COLLAR BOLT - 81904050161 suitable for MAN D engines
Precise Hex Collar Bolt – Comparison Number 81904050161Discover the hex collar bolt with the comparison number 81904050161, which shines in the category of reliable OEM replacement parts. This hex collar bolt is an essential component for effective fastening in engines. Its thoughtful design and precise fit make it ideal for applications requiring matching accessories, particularly suitable for MAN D engines.Optimal Solution for MAN D EnginesOur OEM replacement part is suitable for MAN D engines and offers the efficiency you expect from a top-tier product. This hex collar bolt meets the highest standards and ensures long-lasting performance. Weighing only 0.12 kg, it is easy to install, making it the perfect choice for use in marine and stationary technology.
HEX COLLAR BOLT - 81904050128 suitable for MAN D engines
Robust Hex Collar Bolt 81904050128Discover the hex collar bolt with the comparison number 81904050128, a reliable OEM spare part designed specifically for precise integration into your applications. This product weighs only 0.24 kg and is characterized by its easy handling.
CYLINDER SCREW - 81904010017 suitable for MAN D engines
Cylinder screw for your enginesDiscover the cylinder screw with the reference number 81904010017, an essential OEM spare part specifically tailored for your needs in marine and stationary applications. This product stands for quality and reliability and is crucial for the function of your engines.
ROUND-HEAD SCREW - 81904010008 suitable for MAN D engines
Robust Round-head screw for enginesThe Round-head screw with the comparison number 81904010008 is an essential component that is crucial for the proper operation of MAN D engines. Weighing only 0.033 kg, this ##OEM replacement part## meets the strict requirements of the industry and ensures long-lasting performance.Perfect fit for MAN D enginesManufactured to be compatible with MAN D, the Round-head screw offers optimal accuracy and is thus ideal for use in marine and stationary applications. Our OEM replacement parts impress with their reliability and performance that you can expect from products in this segment. Rely on the robustness of our parts to maximize the lifespan of your engines.
DRAIN PLUG - 81903106042 suitable for MAN D engines
Quality Product for Optimal UseDiscover the drain plug that is marked with the comparison number 81903106042. This OEM replacement part is suitable for MAN D engines and ensures that your engine operates efficiently. Our drain plug meets the highest standards and offers you the durability you expect from OEM replacement parts.Large Inventory for a Variety of Replacement PartsIn our large inventory, you will find a wide selection of replacement parts, including the drain plug with the comparison number 81903106042. Our proven internal control system ensures that all products undergo strict testing before delivery. Thus, you can be sure that you are receiving only the best for your engines.
SCREW PLUG - 81903106037 suitable for MAN D engines
Screw plug compatible with MAN D enginesDiscover our screw plug (comparison number: 81903106037), a top-quality OEM replacement part that is suitable for the demanding requirements of engines. This product offers precise fit, which is crucial for the reliability of your machines.OEM replacement parts compatible with MAN DOur screw plug is compatible with MAN D engines and represents the perfect connection to enhance the performance and longevity of your engines. Thanks to high-quality materials and manufacturing, our OEM replacement parts provide outstanding quality that is recognized in the industry.
SCREW PLUG - 81903106036 suitable for MAN D engines
Robust Screw Plug with Comparison Number 81903106036Discover the reliable screw plug, comparison number 81903106036, specifically developed as an OEM replacement part for various engines. This component offers the quality you can expect from a renowned family business in its second generation.
SCREW PLUG - 81903106035 suitable for MAN D engines
Excellent Screw Plug with Comparison Number 81903106035Discover the screw plug, an OEM replacement part with the comparison number 81903106035, specially designed to provide an ideal solution for your needs. This product impresses with top-class workmanship and is particularly suitable for the diagnosis and maintenance of engines.
SCREW PLUG - 81903106034 suitable for MAN D engines
Screw plug suitable for MAN D enginesDiscover our screw plug, comparison number 81903106034, an essential OEM replacement part. This product stands out for its top-quality construction and is specifically designed for MAN D engines. Rely on the reliability and precision of our products.
SCREW PLUG - 81903106033 suitable for MAN D engines
Efficient Screw Plug for MAN D EnginesThe screw plug with the reference number 81903106033 is an essential OEM replacement part specifically designed for diesel and gas engines. This screw plug impresses with precise manufacturing and durability. Designed to maximize the efficiency and safety of your engines, it ensures that all requirements are met.
SCREW PLUG - 81903106032 suitable for MAN D engines
Screw plug suitable for MAN D enginesThe screw plug with the comparison number 81903106032 is an essential OEM replacement part that has been specifically designed to optimize the performance of your engines. With this screw plug, you ensure that the maintenance of your components remains reliable and that your machine operation runs smoothly.Reliable OEM replacement parts for MAN D enginesThis product, suitable for MAN D engines, meets the highest quality standards and offers a top-notch solution for maintenance. Rely on the comparison number 81903106032 to quickly and easily identify and order the necessary OEM replacement parts.
DRAIN PLUG - 81903106025 suitable for MAN D engines
Drain plug with comparison number 81903106025Discover the drain plug with the comparison number 81903106025, which meets the highest quality standards as an OEM replacement part. This product is specifically designed for MAN D engines and provides an ideal solution for your needs.Efficient maintenance of enginesThe drain plug plays a crucial role in the maintenance of engines. It ensures that oil changes and other service work can be carried out efficiently and safely, which is particularly important for the performance of engines designed for MAN D.
SCREW PLUG - 81903106024 suitable for MAN D engines
Screw plug suitable for MAN D engines The comparison number 81903106024 identifies our reliable product: a screw plug. This OEM replacement part is specially designed to provide optimal hold and safety.Precision fit for the highest demands Our product is precisely suitable for MAN D engines and impresses with its high quality and durability. Rely on the strength of our OEM replacement parts that reliably support your engines.
DRAIN PLUG - 81903106022 suitable for MAN D engines
Drain plug with comparison number 81903106022The drain plug with the comparison number 81903106022 is an essential OEM spare part, ideally suited for MAN D engines. This product meets the highest standards and ensures reliable performance in your marine or stationary operation.
SCREW PLUG - 81903106021 suitable for MAN D engines
Excellent Screw Plug for EnginesThe screw plug with the reference number 81903106021 is a high-quality OEM spare part that provides reliable performance in diesel and gas engines. This product is perfectly suited for the demands of marine and stationary engines and is ideal for use in your applications.Quality Through Internal ControlWith our extensive internal control, we ensure that every screw plug we offer meets the highest quality standards. As OEM spare parts, we supply items that are suitable for MAN D engines and also compatible with manufacturers such as MWM, Mercedes-Benz, Deutz, Volvo, MTU, Bosch, and Detroit Diesel. This way, you can rely on the performance of your engines.
SCREW PLUG - 81903106020 suitable for MAN D engines
Precise Screw Plug Suitable for MAN D EnginesDiscover the screw plug with the comparison number 81903106020, an essential OEM spare part that offers you quality and reliability. This screw, weighing only 0.15 kg, belongs to the category of screws and is crucial for the performance of your machines. It is specifically designed to seamlessly integrate into engines compatible with MAN D.Highest Precision for Top-Class EnginesOur offering includes over 1 million spare parts, including this precise product, which is perfectly tailored to the requirements of engines. The meticulous manufacturing ensures that the OEM spare part excels in both performance and durability. Trust in our expertise in providing spare parts suitable for MAN D engines.
VENT PLUG - 81903106019 suitable for MAN D engines
Vent Plug – Comparison Number 81903106019Discover the vent plug, comparison number 81903106019, designed for a perfect fit for MAN D engines. Weighing only 0.01 kg, this product combines stability and functionality. It is an indispensable spare part categorized under "Screws" that ensures optimized performance under demanding conditions.OEM Spare Parts for LongevityOur vent plug is a premium spare part that assures you receive the best quality and reliability. The product is compatible with MAN D engines and provides the quality you need for efficient operation of your machinery. Rely on our expertise to ensure the longevity and efficiency of your engines.
DRAIN PLUG - 81903106018 suitable for MAN D engines
Discover Drain Plug for MAN D EnginesThe drain plug with the comparison number 81903106018 is an essential OEM spare part specifically designed to function optimally with MAN D engines. With its precise fit and the use of high-quality materials, this product offers a long lifespan and reliability for your machines. Weighing only 0.01 kg, this drain plug is characterized by its convenience.
SCREW PLUG - 81903106017 suitable for MAN D engines
Quality of the Screw Plug for Your RequirementsDiscover the screw plug with the reference number 81903106017, which offers excellent performance for your needs. This OEM spare part ensures a secure connection in engines and is essential for maintenance and upkeep. Weighing only 0.01 kg, this screw is both lightweight and stable.Suitable for MAN D EnginesThe OEM spare part is suitable for MAN D engines and offers the highest reliability. Through careful internal controls, we ensure that our products meet the strict quality standards required for use in diesel and gas engines. Rely on our commitment to precision and efficiency.
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.