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 - 51900200343 suitable for MAN D-engines
Trust in the Comparison Number 51900200343 The Hex collar bolt with the comparison number 51900200343 is ideal for robust applications. This product delivers the highest precision and durability while ensuring a reliable connection in your engine infrastructure. Its outstanding characteristics make the Hex collar bolt an essential OEM spare part for professional users in marine and stationary applications.
HEX COLLAR BOLT - 51900200342 suitable for MAN D-engines
Reliable Hex Collar Bolt with Comparison Number 51900200342Discover the hex collar bolt with the comparison number 51900200342, which offers outstanding performance in the spare part category. This product is an OEM spare part specifically designed for all your engine and machine requirements. Its exceptional reliability makes it the ideal choice for technical applications and optimizes the performance of your projects.
HEX COLLAR BOLT - 51900200341 suitable for MAN D-engines
Quality You Can TrustDiscover the Hex collar bolt (Comparison number: 51900200341), an essential product for various applications. Our screw belongs to the group of screws and is designed to meet the high demands of engines. This Hex collar bolt is suitable for MAN D engines and provides reliability as well as functionality in marine and stationary applications.Lightweight and DurableWeighing only 0.08 kg, the Hex collar bolt combines lightness with toughness – an ideal replacement part for individual needs. Since we only sell replacement parts, you can count on quality and durability. These features are particularly beneficial for use in suitable for MAN D engines.
HEX COLLAR BOLT - 51900200340 suitable for MAN D-engines
Quality Product: Hex Collar Bolt for EnginesThe Hex collar bolt with the comparison number 51900200340 is an essential replacement part that has been specifically designed to serve engines reliably. Weighing only 0.07 kg, it combines lightness and strength. This product is characterized by durability and performance that you need for your machines.Suitable for MAN D EnginesOur Hex collar bolt is suitable for MAN D engines and represents a thoughtful investment for any B2B customer. Its precise construction ensures that it meets the specific requirements of these engines and provides an excellent fit. Proven technologies combined with the best materials make this screw product a recommended choice.
HEX COLLAR BOLT - 51900200339 suitable for MAN D-engines
Precise Product: Hex Collar BoltDiscover the Hex Collar Bolt, comparison number 51900200339, an essential OEM replacement part that provides a reliable and stable connection for your applications. This product weighs only 0.06 kg and impresses with its perfect fit and materials of excellent quality. The Hex Collar Bolt meets the specific requirements of industrial engines and remains durable and robust.OEM Replacement Part Suitable for MAN D EnginesThe Hex Collar Bolt is suitable for MAN D engines, making it an ideal addition to your constructions. Thanks to the robust design of the OEM replacement part, it is specifically designed for use in the marine industry, stationary operations, and locomotives. Rely on this strong product for your machine solutions.
HEX COLLAR BOLT - 51900200338 suitable for MAN D-engines
Hex collar bolt compatible with MAN D enginesDiscover the hex collar bolt with the reference number 51900200338. This OEM replacement part has been designed to be precise and durable in industrial applications. Weighing only 0.104 kg, this product offers optimized handling and excellent adaptability in various applications.
HEX COLLAR BOLT - 51900200335 suitable for MAN D-engines
Hex Collar Bolt for Reliable ApplicationsDiscover the hex collar bolt with the comparison number 51900200335, an excellent OEM spare part specifically designed to excel in your machine performance. This screw belongs to the category "Screws" and is perfectly suited for engines compatible with MAN D engines. We exclusively provide OEM spare parts that meet your requirements.Optimal Fit for MAN D EnginesThis hex collar bolt is an essential component, specifically designed for MAN D engines and weighs 0.06 kg. With its robust construction and precise fit, it ensures accurate assembly and offers excellent performance. By using top-quality materials, you make no compromises with this safety-relevant component.
HEX COLLAR BOLT M8X172-10.9 - 51900200333 suitable for MAN D-engines
Hex collar bolt m8x172-10.9 with comparison number 51900200333Discover our Hex collar bolt m8x172-10.9 with the comparison number 51900200333, an essential product for demanding applications in marine and stationary use. This hex collar bolt is ideally suited for Housings, covers and closures and ensures proper application in various industrial fields.
SCREW PLUG - 51900200329 suitable for MAN D-engines
Quality and Functionality: Screw Plug 51900200329Discover the screw plug suitable for MAN D engines with the comparison number 51900200329. This OEM replacement part impresses with its high precision and reliable performance. The perfect fit ensures effective functionality of your engines, which is crucial for marine and stationary applications.Efficiency for MAN D EnginesThe screw plug is an important component responsible for the proper performance of engines. Weighing only 0.03 kg, it is easy to handle and fits a variety of applications. Suitable for MAN D engines, this replacement part provides the necessary stability to ensure the smooth operation of your machines.
HEX COLLAR BOLT - 51900200322 suitable for MAN D-engines
Properties of the Hex Collar Bolt Discover the Hex collar bolt (comparison number: 51900200322), a significant product compatible with MAN D engines, which contributes crucially to performance in marine and stationary applications. Weighing only 0.16 kg, this OEM replacement part offers the stability and robustness you need for your machinery.Compatibility with MAN D EnginesThis Hex collar bolt is specifically designed as an OEM replacement part, ensuring that all components work seamlessly together. The comparison number 51900200322 allows for precise identification, so you can be confident that the product is perfectly compatible and delivers the required performance in your applications.
HEX COLLAR BOLT - 51900200304 suitable for MAN D-engines
No Compromises with the Hex Collar BoltDiscover our hex collar bolt with the comparison number 51900200304, specifically designed to meet the demands of marine and stationary engines. The product weighs only 0.18 kg and impresses with its robustness and durability. This hex collar bolt is your first choice for reliable solutions in maintenance.Ideal for MAN D Engines: Perfect for EfficiencyOur hex collar bolt is an OEM replacement part that is ideally suited for MAN D engines. With our comparison number 51900200304, we offer the highest precision fit. Trust in the quality of this product, which has been specially developed to meet the requirements of high-performance applications.
HEX COLLAR BOLT - 51900200303 suitable for MAN D-engines
Hex Collar Bolt: Comparison Number 51900200303Discover the hex collar bolt, which plays a central role for engines. With the comparison number 51900200303, this part is an essential product. It offers easy handling and excellent adaptability for numerous applications; the bolt is particularly lightweight, weighing only 0.11 kg.Suitable for MAN D EnginesThis hex collar bolt is specifically suitable for MAN D engines and offers the highest quality as well as optimal performance. Authentic OEM spare parts are important because they come directly from the manufacturer and ensure that all functions of your engines run smoothly. Our hex collar bolt is an OEM spare part that significantly contributes to the longevity of your machines, making it a solid investment.
HEX COLLAR BOLT - 51900200300 suitable for MAN D-engines
Robust and Reliable: Hex Collar BoltOur Hex collar bolt with the reference number 51900200300 is an extremely solid OEM spare part designed for MAN D engines. This component features precise workmanship and a durable design that securely supports your machine’s performance.
HEX COLLAR BOLT - 51900200298 suitable for MAN D engines
Hex Collar Bolt from MOPA MotorpartsDiscover the Hex collar bolt with the comparison number 51900200298, an essential product for your engine needs. These OEM spare parts are distinguished by their excellent workmanship and long lifespan. Suitable for MAN D engines, they provide effective performance in marine and stationary technology.Special Features Including DimensionsWeighing only 0.137 kg and with compact dimensions of 8.7 cm in length and width and 2.6 cm in height, the Hex collar bolt is both robust and easy to handle. These specific measurements enable perfect integration into your MAN D engines. Compelling features make this product an excellent choice for professional applications that demand precision.
HEX COLLAR BOLT - 51900200297 suitable for MAN D-engines
Excellent Spare Part: Hex Collar Bolt The Hex collar bolt with the comparison number 51900200297 is an essential OEM spare part specifically designed for applications in the field of MAN D engines. Weighing only 0.15 kg, it offers an optimal combination of robustness and ease of handling.
HEX COLLAR BOLT - 51900200293 suitable for MAN D engines
HEX COLLAR BOLT with the comparison number 51900200293 suitable for MAN D engines
ELONGATING HEX COLLAR BOLT - 51900200284 suitable for MAN D-engines
Optimal Solution: Elongating Hex Collar Bolt Compatible with MAN DDiscover our elongating hex collar bolt with the comparison number 51900200284. This product meets the highest quality standards and offers a perfect solution for all requirements related to MAN D engines. With a lightweight design of only 0.175 kg, this replacement part is excellent for a variety of applications, particularly in maritime and stationary settings.Top Product Compatible with MAN D EnginesWith this OEM replacement part, you can rely on it being designed for MAN D engines. It ensures smooth functionality while also providing excellent fit accuracy. This way, you can quickly bring your technical equipment back to operational status and reduce potential downtimes.
HEX COLLAR BOLT - 51900200283 suitable for MAN D-engines
Hex Collar Bolt for Highest DemandsThe hex collar bolt with the reference number 51900200283 is an essential product for engine enthusiasts and professionals. This OEM replacement part falls into the category of screws and offers stability and reliability in various applications. Weighing 0.16 kg, it is lightweight yet robust, making it ideal for marine and stationary applications.
FITTING BOLT - 51900200281 suitable for MAN D engines
Discover the fitting bolt with comparison number 51900200281The fitting bolt with comparison number 51900200281 is an essential OEM replacement part, specifically designed to ensure excellent performance in the operation of various engines. This fitting bolt, lightweight and compact at a weight of 0.116 kg, measures 6.9 cm in length and width as well as 2.9 cm in height. Each screw is precisely manufactured, so you can rely on high-quality parts that are suitable for your MAN D engines.
HEX COLLAR BOLT - 51900200277 suitable for MAN D-engines
Hex Collar Bolt - Comparison Number 51900200277Discover the hex collar bolt that offers outstanding performance for your machines with the comparison number 51900200277. Weighing 0.15 kg, this product meets the demanding requirements for both maritime and stationary use of engines.
HEX COLLAR BOLT - 51900200270 suitable for MAN D-engines
Your Reliable Hex Collar Bolt for EnginesDiscover our hex collar bolt with comparison number 51900200270. This product is essential for the flawless operation of your engines. The hex collar bolt has been developed as an OEM replacement part and impresses with excellent quality and precision for various applications.Robust Choice Suitable for MAN D EnginesThe hex collar bolt is suitable for MAN D engines and ensures that your machines operate stably even under the toughest conditions. Weighing 0.157 kg, this component is particularly robust and durable, making it ideal for use in marine and stationary engines.
EXTERNAL HEX ROUND BOLT - 51900200269 suitable for MAN D-engines
Robust External Hex Round Bolt for Every NeedDiscover the External Hex Round Bolt (comparison number: 51900200269), an outstanding product suitable for MAN D engines. This OEM replacement part combines numerous advantages and ensures that your engine operates efficiently and dynamically. With precise manufacturing, this External Hex Round Bolt meets the high demands for reliability and performance.Suitable for MAN D Engines - Optimal FitWith the External Hex Round Bolt suitable for MAN D, you have an effective component available that is lightweight yet durable. Weighing only 0.197 kg, this OEM replacement part optimizes the maintenance process and ensures excellent performance of your machines. Depend on this product for efficiency in your maintenance tasks.
EXTERNAL HEX ROUND BOLT - 51900200268 suitable for MAN D-engines
Robust External Hex Round BoltDiscover the external hex round bolt, suitable for MAN D engines, with the comparison number 51900200268. This reliable OEM replacement part ensures a strong connection and is crucial for maintaining the performance of your engines over time. Weighing only 0.224 kg, the bolt is easy to handle while providing the strength necessary for demanding applications.Optimal Fit and StrengthOur external hex round bolt is an excellent product specifically designed for use with MAN D engines. Trust in the quality of these OEM replacement parts, which have been enthusiastically tested through rigorous inspections. This product helps measure and secure the efficiency of your drive in operation.
HEX COLLAR BOLT - 51900200267 suitable for MAN D-engines
Hex Collar Bolt for MAN D Engines in DetailThe hex collar bolt with the comparison number 51900200267 is an indispensable product, suitable for MAN D engines. This high-quality OEM replacement part ensures reliable connections and stability in your engines. Furthermore, the hex collar bolt belongs to the product group "Screws," which additionally underscores its functionality. Weighing 0.23 kg, it impresses both with its robustness and ease of handling.
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.