3914956
Hexagon Head Cap Screw
Cummins®

The Cummins 3914956 Hexagon Head Cap Screw is a specialized fastener designed for use in heavy-duty truck applications. It serves as a vital component in securing various parts and assemblies within the truck’s structure. Its role is significant in ensuring the integrity and reliability of truck components, contributing to the overall performance and durability of the vehicle ¹.

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. In the automotive industry, these screws are commonly used to join metal parts together, providing a secure and durable connection. Mechanically, the hexagonal shape of the head distributes torque evenly, reducing the risk of cam-out and ensuring a tight fit ².

Purpose of the Cummins 3914956 Hexagon Head Cap Screw

This Cummins part is specifically designed to meet the demanding requirements of heavy-duty truck applications. It plays a role in securing critical components and assemblies within the truck, such as engine mounts, transmission housings, and chassis parts. Its applications extend across various truck systems, ensuring that parts remain firmly in place under significant stress and vibration ³.

Key Features

The 3914956 boasts several key features that enhance its functionality and durability. It is typically made from high-strength steel, ensuring it can withstand the rigors of heavy-duty use. The screw features a fine or coarse thread, depending on the application, which provides a strong grip on the mating surfaces. The hexagonal head design allows for easy installation and removal, while the cap under the head offers additional surface area for a more secure fit.

Benefits

This Cummins part offers several benefits that make it an ideal choice for heavy-duty truck applications. Its high-strength material composition ensures enhanced durability, capable of withstanding significant loads and stresses. The design of the screw provides resistance to vibration loosening, maintaining a secure connection over time. Additionally, the hexagonal head allows for ease of installation and removal, facilitating maintenance and repair processes.

Installation and Usage

Proper installation of the 3914956 is crucial for ensuring its effectiveness and longevity. It is recommended to use the appropriate torque specifications provided by the manufacturer to achieve the correct tension without over-tightening, which could lead to damage. Utilizing the correct tools, such as a torque wrench, ensures precise application of force during installation.

Troubleshooting and Maintenance

Common issues with Hexagon Head Cap Screws include loosening due to vibration and corrosion. Regular inspection and maintenance can help identify and address these issues early. Tightening screws to the manufacturer’s specified torque and applying an anti-seize compound can prevent corrosion and ensure a secure fit. In cases where screws show signs of wear or damage, replacement is recommended to maintain the integrity of the assembly.

Manufacturer - Cummins

Cummins is a renowned manufacturer in the heavy-duty truck industry, known for its high-quality engines, components, and aftermarket parts. With a history of innovation and excellence, Cummins has established a strong reputation for producing reliable and durable products. Their range of components, including the 3914956, is designed to meet the stringent demands of heavy-duty applications, ensuring optimal performance and longevity.

Cummins Engine Part 3914956: Hexagon Head Cap Screw

The Cummins part number 3914956, a Hexagon Head Cap Screw, is a critical component in various Cummins engine models. This screw is designed to provide secure fastening in areas where high strength and durability are paramount. Its hexagonal head allows for efficient torque application, ensuring that components remain tightly secured under operational stresses.

Application in Cummins Engines

6C8.3 Engine Series

The 6C8.3 engine series, known for its robust performance, utilizes the Hexagon Head Cap Screw in several key areas. This includes securing various engine components, ensuring that they maintain their integrity during high-stress operations. The screw’s design provides a reliable connection, minimizing the risk of loosening over time.

Grouped Engine Models

• 6C8.3 Engine Models: The 3914956 screw is integral in the assembly and maintenance of these engines, particularly in securing engine blocks, cylinder heads, and other critical assemblies. Its use ensures that the engine’s structural components remain firmly in place, contributing to the engine’s overall reliability and longevity.

The Hexagon Head Cap Screw is a testament to Cummins’ commitment to quality and durability, ensuring that their engines perform optimally under demanding conditions.

Role of Part 3914956 Hexagon Head Cap Screw in Engine Systems

This part is instrumental in securing various components within engine systems, ensuring stability and efficient operation.

In the arrangement of engine components, this screw plays a significant role in fastening parts that require precise alignment and secure attachment. Its hexagonal head allows for firm grip and torque application, minimizing the risk of loosening over time.

Within the turbocharger system, the hexagon head cap screw is used to secure the turbocharger to its mounting points. This ensures that the turbocharger remains firmly in place, even under high-stress conditions, allowing it to function optimally and enhance engine performance.

In the manifold assembly, these screws are employed to attach the manifold to the engine block or other components. This secure attachment is vital for maintaining the integrity of the manifold, ensuring that it can withstand the high pressures and temperatures involved in the combustion process.

For the exhaust system, the hexagon head cap screw is utilized to fasten exhaust components such as pipes, catalytic converters, and mufflers. This secure attachment prevents leaks and ensures that the exhaust system operates efficiently, contributing to reduced emissions and improved engine performance.

At the turbocharger location, these screws are essential for securing the turbocharger housing and other related components. This ensures that the turbocharger can operate within its designed parameters, enhancing overall engine efficiency and power output.

Overall, the part 3914956 hexagon head cap screw is a fundamental component in the secure assembly and operation of various engine systems, contributing to the reliability and performance of the engine.

Conclusion

The Cummins 3914956 Hexagon Head Cap Screw is a critical component in heavy-duty truck and engine applications. Its design, featuring a hexagonal head and high-strength material, ensures secure fastening and durability under demanding conditions. Proper installation and maintenance are essential to maximize its effectiveness and longevity, contributing to the overall performance and reliability of the vehicle or engine system.