3075345
Hexagon Head Cap Screw
Cummins®

The Hexagon Head Cap Screw, part number 3075345 by Cummins, is a critical component in commercial truck applications. This screw is designed to provide secure fastening in various truck components and assemblies. Understanding its role and significance is essential for maintaining the integrity and performance of truck systems.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is a type of fastener characterized by its hexagonal head, which allows for efficient tightening and loosening using a wrench or socket ¹. The hexagonal design ensures a secure grip, reducing the risk of slippage during use. These screws are commonly used in applications requiring strong, permanent fastening. The thread engages with the mating part, creating a tight connection that can withstand significant loads and vibrations.

Purpose of the 3075345 Hexagon Head Cap Screw

The 3075345 Hexagon Head Cap Screw is employed in truck operations to secure components and assemblies within the truck’s structure and systems. It plays a role in maintaining the integrity of critical connections, ensuring that parts remain firmly in place under various operating conditions. This screw is often used in applications where durability and resistance to loosening are paramount.

Key Features

The 3075345 Hexagon Head Cap Screw features several key attributes that enhance its performance. It is composed of high-strength materials, typically alloy steel, which provides excellent tensile strength and durability ². The screw has a fully threaded design, allowing it to engage deeply into the mating part for a secure hold. Additionally, it may include special coatings or treatments, such as zinc plating or black oxide, to improve corrosion resistance and extend its service life.

Benefits

The 3075345 Hexagon Head Cap Screw offers several benefits in commercial truck applications. Its design ensures improved fastening security, making it less prone to loosening under vibration and dynamic loads. The material composition and coatings enhance its durability, allowing it to perform reliably in heavy-duty conditions. These features contribute to the overall safety and efficiency of truck operations.

Troubleshooting and Maintenance

Common issues with Hexagon Head Cap Screws include corrosion and loosening. Regular inspection and maintenance are recommended to ensure longevity and reliable performance ³. If corrosion is detected, the affected screws should be replaced to prevent further degradation. To address loosening, re-tightening the screws or using lock washers and thread-locking compounds can be effective solutions. Proper torque specifications should be followed during installation to avoid over-tightening, which can lead to stripping or damage.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins is recognized for its expertise in diesel engines and related technologies. The company is committed to quality and innovation, providing reliable solutions for the commercial vehicle industry. Cummins’ products are designed to meet the demanding requirements of heavy-duty applications, ensuring performance and durability in various operating environments.

Role of Part 3075345 Hexagon Head Cap Screw in Engine Systems

The 3075345 Hexagon Head Cap Screw is integral to the assembly and maintenance of various engine components, ensuring optimal performance and reliability.

Injector Assembly

In fuel injection systems, the Hexagon Head Cap Screw secures the injector to the engine block or cylinder head. This fastening is essential for maintaining the precise alignment and sealing required for efficient fuel delivery. The screw’s robust design ensures that the injector remains firmly in place, even under high pressure and temperature conditions, contributing to consistent fuel atomization and combustion efficiency.

Performance Parts Integration

When upgrading to performance parts, the Hexagon Head Cap Screw plays a significant role in securing aftermarket components such as high-flow fuel injectors or custom intake manifolds. Its reliable fastening capability ensures that these performance-enhancing parts are securely mounted, reducing the risk of vibrations or component failure during high-stress operations. This stability is vital for achieving the desired performance gains without compromising engine integrity.

General Engine Component Security

Across various engine systems, the Hexagon Head Cap Screw is used to fasten an array of parts, from sensor brackets to valve cover plates. Its application extends to securing critical sensors that monitor engine performance, ensuring that these components remain in their designated positions for accurate data collection and engine management. Additionally, it is employed in the assembly of valve covers, where it must withstand the dynamic forces within the engine compartment while maintaining a seal against oil leaks.

Enhanced Durability in High-Performance Applications

In high-performance engine builds, the Hexagon Head Cap Screw is often selected for its superior strength and resistance to loosening. Whether fastening turbocharger components or securing exhaust manifold brackets, its durability under extreme conditions helps maintain the structural integrity of performance-oriented engine systems. This reliability is particularly important in racing applications where engine components are subjected to prolonged periods of high stress and thermal cycling.

Conclusion

The Hexagon Head Cap Screw, part 3075345, serves as a fundamental fastening solution across a wide range of engine components, contributing to the overall performance, reliability, and longevity of the engine system.