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:
FITTING BOLT - 81502120007 suitable for MAN D engines
Quality of the Fitting Bolt for MAN D EnginesThe fitting bolt with the comparison number 81502120007 is an essential OEM replacement part that reliably holds your engines together. Weighing 0.61 kg, this bolt ensures a secure connection, which is crucial for the effective operation of engines. Due to its precise fit, the fitting bolt suitable for MAN D engines is a top choice.
FITTING BOLT - 81502120000 suitable for MAN D engines
Fitting Bolt: Reliable Product for Complex ApplicationsThe fitting bolt with the comparative number 81502120000 is an essential product specifically designed as an OEM spare part. This fitting bolt meets the highest standards and is crucial for the functionality of your engines. Weighing 0.47 kg, it provides a secure and durable connection in challenging applications.Suitable for MAN D EnginesOur product, the fitting bolt 81502120000, is suitable for MAN D engines. It ensures that your machines operate reliably. With its precise fit and high quality requirements, this OEM spare part is ideal for the maintenance of marine and stationary engines.
STUD - 81491150018 suitable for MAN D engines
Stud: An Essential ProductDiscover our stud, comparison number 81491150018, specially designed to ensure a reliable connection in engines. This product is suitable for MAN D engines and belongs to the category of screws. Weighing only 0.01 kg, the stud offers not only optimal functionality but also excellent fit for your engines.OEM Replacement Parts: Quality for Your ApplicationsThe stud is an OEM replacement part and comes directly from the original equipment manufacturer. This means you receive a product that meets the highest standards. Compared to aftermarket parts, our OEM replacement part provides the security and durability that your engine needs.
THREADED ROD - 81482400323 suitable for MAN D engines
Threaded rod with comparison number 81482400323Discover the threaded rod with the comparison number 81482400323, an essential product for anyone relying on reliable engine replacement parts. This OEM replacement part has been designed to fit perfectly for MAN D engines. Weighing only 0.02 kg, the threaded rod is not only lightweight but also user-friendly in installation.OEM replacement parts for demanding applicationsOur threaded rod with the comparison number 81482400323 is among the OEM replacement parts that meet the highest quality standards. It is suitable for MAN D engines and ensures optimal performance and longevity of your system. Trust in the proven quality that distinguishes our products.
THREADED ROD - 81482400288 suitable for MAN D engines
Threaded rod 81482400288 in DetailDiscover the threaded rod with the comparison number 81482400288, an essential spare part for your engines. This threaded rod belongs to the group of screws and is optimally suited to enhance the performance of your machines. Weighing only 0.03 kg, it is ideal for various applications in marine and stationary technology.
THREADED ROD - 81482400285 suitable for MAN D engines
Threaded rod with comparison number 81482400285Discover our threaded rod with the comparison number 81482400285, an important OEM spare part suitable for MAN D engines. This product impresses with precise workmanship and contributes to the reliable operation of your engines. Weighing only 0.025 kg, the threaded rod is easy to handle and simple to install.Comprehensive range of OEM spare partsIn our extensive inventory, we offer a variety of OEM spare parts, including this threaded rod. Our many years of experience in the industry ensure that you receive only top-quality products.
THREADED ROD - 81482305194 suitable for MAN D engines
First-Class Threaded Rod Suitable for MAN D Engines Discover the threaded rod, an essential OEM spare part suitable for MAN D engines. With the comparison number 81482305194, this product belongs to the article group screws and offers you the quality you expect from an OEM spare part. The threaded rod, weighing only 0.07 kg, is lightweight enough to facilitate installation without compromising stability.Reliability Through OEM Quality The threaded rod is an OEM spare part that ensures you receive a reliable and durable product. Our OEM spare parts, including the threaded rod, are specially designed to ensure optimal performance in engines, suitable for various applications in marine and stationary use.
THREADED ROD - 81482305190 suitable for MAN D engines
Precision Threaded Rod: Comparison Number 81482305190Discover the threaded rod with the comparison number 81482305190, an OEM spare part specifically designed to meet the requirements of engines. Weighing only 0.1 kg, this product is both lightweight and extremely functional. It is the ideal component suitable for MAN D engines and impresses with its precise workmanship.Quality for Applications: Suitable for MAN D EnginesOur threaded rod is the perfect solution when you are looking for a reliable spare part. It is compatible with MAN D engines and meets the highest standards. Rely on our OEM spare part to maximize the performance of your engine while prolonging its lifespan.
THREADED ROD - 81482305189 suitable for MAN D engines
Robust Threaded Rod with Comparison Number 81482305189Discover our threaded rod with the comparison number 81482305189, an essential part specifically designed for the requirements of engines in marine and stationary applications. This product impresses with top-notch quality and precision.Suitable for MAN D EnginesOur threaded rod is suitable for MAN D engines and ensures optimal functionality of your machines. Weighing only 0.07 kg, this part is lightweight yet robust enough to withstand demanding conditions for a long time. Rely on the precision that is evident in every detail of this product!
THREADED ROD - 81482305188 suitable for MAN D engines
Threaded rod with comparison number 81482305188Discover the threaded rod with comparison number 81482305188 – an essential product for motorized applications. This threaded rod is carefully constructed as an OEM replacement part and plays a key role in the functionality of engines. The replacement part weighs only 0.07 kg and is suitable for use in various areas.Suitable for MAN D engines – Perfect fitThe threaded rod is specifically designed to be compatible with MAN D engines, providing you with the assurance that your engine operates efficiently and durably. Due to its high quality, it is a renowned OEM replacement part that meets strict standards. Trust in the accuracy and longevity that only OEM replacement parts can offer.
SCREW/BOLT - 81461250007 suitable for MAN D engines
Precise Screw for Demanding ApplicationsDiscover the screw with the comparison number 81461250007, a crucial OEM replacement part designed for the requirements of engines in the industry. Weighing only 0.09 kg, this product delivers optimal performance and reliability. This screw fits perfectly in your applications and is essential for smooth operation.
SCREW/BOLT - 81461250006 suitable for MAN D engines
Efficient Screw/Bolt with Comparison Number 81461250006Discover the screw/bolt with the comparison number 81461250006, specifically designed for engines compatible with MAN D. This precisely manufactured screw/bolt ensures that your engine operates optimally in marine and stationary applications. Weighing only 0.06 kg, this product is both lightweight and robust, making it ideal for demanding applications.Quality through OEM Spare PartsAs an OEM spare part, the screw/bolt with comparison number 81461250006 offers you a product that meets the highest standards. This spare part ensures a perfect fit and durability, allowing you to rely on the continuous performance of your engines. Trust in the quality that only OEM spare parts can provide.
WHEEL MOUNTING BOLT - 81455010141 suitable for MAN D engines
Precision in Every Detail: Wheel Mounting BoltDiscover the wheel mounting bolt with the comparison number 81455010141, designed for the highest demands in quality and reliability. As an essential product from the screws category, this wheel mounting bolt weighs 0.37 kg and has an optimal construction that perfectly suits your needs.Suitable for MAN D EnginesThis wheel mounting bolt is suitable for MAN D engines and ensures safety and performance. As an OEM replacement part, it meets strict quality standards and ensures that your engine operates efficiently. Rely on the quality of OEM replacement parts to maintain the lifespan and efficiency of your engines.
WHEEL MOUNTING BOLT - 81455010082 suitable for MAN D engines
Wheel mounting bolts for reliable enginesDiscover our wheel mounting bolt (comparison number: 81455010082), suitable for MAN D engines. This OEM replacement part is specifically designed to optimize the performance of your engines in marine and stationary applications, providing precise fit.Quality and reliability of OEM replacement partsOur product, the wheel mounting bolt, meets the highest quality standards and is renowned as an OEM replacement part that is characterized by durability and reliability. Trust our expertise to ensure your engine runs optimally.
HEX SHOULDER STUD - 81440500135 suitable for MAN D engines
Robust Hex Shoulder Stud with Comparison Number 81440500135Discover our Hex shoulder stud, which is labeled with the comparison number 81440500135. This product is an OEM spare part specifically designed to reliably support engines compatible with MAN D. Weighing 1.25 kg, this hex shoulder stud provides the necessary stability for your applications.
THREADED ROD - 81437020030 suitable for MAN D engines
Threaded rod with comparison number 81437020030Discover our threaded rod with the comparison number 81437020030, which has been specifically designed to meet the demands of engines. This OEM replacement part offers a precise fit and powerful quality. At MOPA Motorparts, we focus on OEM replacement parts that ensure durability and reliability for your applications in marine and stationary use.Robust component for enginesWeighing 0.88 kg, this threaded rod is not only robust but also optimally manageable. It is suitable for MAN D engines and an essential component for the maintenance and repair of engines. Rely on our expertise and secure the best products for your operations.
ADJUSTING SCREW - 81427100069 suitable for MAN D engines
Adjusting screw with comparison number 81427100069The adjusting screw with the comparison number 81427100069 is a premium OEM spare part specifically designed to optimize engine performance. As a fitting spare part, it ensures perfect compatibility for use in various applications.Advantages of OEM spare partsComparison number 81427100069 represents unmatched precision. This OEM spare part is suitable for MAN D engines, ensuring that your engine operates at its best. Unlike aftermarket products, OEM spare parts offer the quality and reliability you expect from a manufacturer.
EYE BOLT - 81424030048 suitable for MAN D engines
Qualitative Eye Bolt – Your OEM Replacement PartDiscover the eye bolt with the comparison number 81424030048, an essential OEM replacement part specifically designed to be compatible with MAN D engines. This eye bolt not only offers an excellent fit but also the quality you can expect from a manufacturer.
ROUND-HEAD SCREW - 81413350105 suitable for MAN D engines
Round-head screw with comparison number 81413350105Discover the round-head screw with the comparison number 81413350105, a precise OEM spare part specifically designed for MAN D engines. This product ensures optimal fit and long lifespan, making it the ideal choice for your marine and stationary applications.
THREADED ROD - 81394600003 suitable for MAN D engines
Precise Threaded Rod for Reliable EnginesDiscover our threaded rod (reference number 81394600003), designed for MAN D engines. As an OEM replacement part, it offers top-notch fit and quality that you need for the reliable operation of your engines. Weighing only 0.39 kg, the threaded rod is a lightweight yet robust component that meets your requirements perfectly.Trust in OEM Replacement PartsThis threaded rod is a crucial part of our article group "screws" and is an essential product for maximizing the performance of your engines. The use of high-quality materials during manufacturing ensures that this OEM replacement part operates smoothly and meets the highest standards.
- 81381400016 suitable for MAN D engines
Precision Screw with Comparison Number 81381400016Discover our screw with the comparison number 81381400016, a top-quality OEM spare part suitable for MAN D engines. This product offers the quality required for the reliable performance of your engines.
SCREW PLUG - 81356030012 suitable for MAN D engines
Efficient Screw Plug for EnginesDiscover our top-quality screw plug, marked with the reference number 81356030012. This OEM replacement part impresses with excellent fit and durability. Weighing 1.09 kg, it provides the stability you need for your projects – suitable for MAN D engines.Precision for MAN D EnginesThe product is specifically designed as an OEM replacement part and meets the highest quality standards. The screw plug not only stands out for its functionality but is also a valuable component for optimal performance of your engines. Rely on the quality you expect from us – suitable for MAN D engines.
SCREW PLUG - 81356030009 suitable for MAN D engines
Precise Screw Plug with Comparison Number 81356030009Discover the screw plug with the comparison number 81356030009, specifically designed to meet your highest precision requirements. This OEM spare part belongs to the category of screws and is ideal for marine and stationary engines.Reliability for Suitable MAN D EnginesThe screw plug weighs 0.65 kg, making it easy to handle without compromising on robustness. This OEM spare part is offered suitable for MAN D engines and meets strict quality standards to ensure that your suitable MAN D engines are optimized.
SCREW PLUG - 81356030008 suitable for MAN D engines
Screw plug with comparison number 81356030008Discover the screw plug with the comparison number 81356030008, specifically designed for MAN D engines. This OEM replacement part offers you the highest quality and reliability you expect from original manufacturer products. Weighing 0.551 kg, this screw plug ensures that all components of your engines are securely and safely connected.Precise workmanship for MAN D enginesThis product is suitable for MAN D engines and impresses with its precise workmanship. The screw plug belongs to the group of screws and has been designed to enhance the efficiency of your machine. Trust this OEM replacement part when it comes to the maintenance and servicing of your diesel and gas 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.