3079794
Twelve Point Cap Screw
Cummins®

The 3079794 Twelve Point Cap Screw is a specialized fastener produced by Cummins, a well-established manufacturer in the commercial truck industry. This cap screw is designed for use in heavy-duty applications, particularly in the assembly and maintenance of commercial trucks. Its robust construction and precise engineering make it a reliable component for securing various parts within the truck’s mechanical systems.

Basic Concepts of Twelve Point Cap Screws

A twelve point cap screw is a type of fastener characterized by its hexagonal socket head, which provides a larger contact area compared to traditional hex-head screws. This design allows for greater torque application with reduced risk of cam-out, making it suitable for high-stress applications. Twelve point cap screws are commonly used in mechanical assemblies where secure and durable fastening is required, such as in engine components, chassis parts, and other critical areas of commercial trucks ¹.

Purpose and Role in Truck Operation

This Cummins part plays a significant role in the operation of commercial trucks by securely fastening components that are subject to substantial stress and vibration. Its application ensures that parts remain firmly in place, contributing to the overall functionality and safety of the vehicle. By providing a stable connection, this cap screw helps maintain the integrity of the truck’s mechanical systems, ensuring reliable performance under demanding conditions.

Key Features

The 3079794 Twelve Point Cap Screw boasts several key features that make it ideal for heavy-duty applications. Its design includes a twelve-point socket head, which offers enhanced torque application and reduced cam-out risk. The screw is made from high-strength materials, ensuring durability and resistance to wear. Additionally, its precise threading and robust construction contribute to a secure and lasting connection, even in challenging environments.

Benefits

Using the 3079794 Twelve Point Cap Screw in truck maintenance and repair offers several benefits. Its high-strength material composition provides improved durability, making it resistant to loosening over time. The twelve-point design allows for easier installation and removal, reducing the risk of damage to the fastener or surrounding components. Furthermore, its reliable performance contributes to the overall safety and efficiency of the truck.

Installation Process

Proper installation of the 3079794 Twelve Point Cap Screw is crucial for ensuring a secure fastening. Begin by selecting the appropriate drill bit to create a pilot hole, which helps guide the screw and prevent splitting. Use a torque wrench to apply the recommended torque specifications, ensuring the screw is tightened to the manufacturer’s guidelines. It is important to avoid over-tightening, which can lead to damage, and to check the connection periodically to maintain its integrity.

Troubleshooting and Maintenance

Common issues with twelve point cap screws include loosening due to vibration or corrosion. To address these problems, regularly inspect the fasteners for signs of wear or damage. If corrosion is present, clean the affected area and apply a suitable anti-corrosion treatment. For loose screws, re-tighten them to the specified torque settings. Additionally, consider using lock washers or thread lockers to enhance the security of the connection and prolong the lifespan of the fastener.

Cummins: Manufacturer Overview

Cummins Inc. is a globally recognized leader in the design, manufacture, and distribution of diesel and natural gas engines, as well as related technologies. With a history spanning over a century, Cummins has established a strong reputation for producing high-quality, reliable components for the commercial truck industry. Their extensive product range and commitment to innovation make them a preferred choice for truck manufacturers and maintenance professionals alike.

Twelve Point Cap Screw 3079794 in Cummins Engines

The Twelve Point Cap Screw part number 3079794, manufactured by Cummins, is a critical component in various Cummins engine models. This screw is designed to provide robust fastening capabilities, ensuring secure connections in high-stress environments.

KTA19GC CM558 and QSK19 CM500

In the KTA19GC CM558 and QSK19 CM500 engines, the 3079794 cap screw is utilized in several key areas. These engines, known for their reliability and performance, require components that can withstand significant mechanical stress. The cap screw is often employed in mounting and securing various engine parts, ensuring that the engine operates smoothly and efficiently. Its twelve-point design allows for better grip and torque application, which is essential for maintaining the integrity of the engine’s structure.

QSK19G

Similarly, in the QSK19G engine, the 3079794 cap screw plays a vital role in the assembly and maintenance of the engine. This engine model is designed for heavy-duty applications, and the cap screw’s ability to provide a strong and reliable fastening solution is crucial. The screw is used in various mounting points, ensuring that all components are securely fastened and aligned, which is essential for the engine’s performance and longevity.

Common Usage

Across these engine models, the 3079794 cap screw is integral to the assembly process, providing the necessary strength and durability required for engine components. Its use in multiple mounting points ensures that the engine can withstand the rigors of its operational environment, maintaining performance and reliability over time.

Role of Part 3079794 Twelve Point Cap Screw in Engine Systems

The Part 3079794 Twelve Point Cap Screw is instrumental in securing and maintaining the integrity of various components within engine systems. Its application spans across several key areas, ensuring optimal performance and reliability.

Fuel Plumbing

In the fuel plumbing system, the Twelve Point Cap Screw is used to fasten fittings and connectors. This ensures a secure and leak-free connection, which is essential for maintaining fuel pressure and delivering a consistent fuel supply to the engine.

Injector

For fuel injectors, the Twelve Point Cap Screw plays a significant role in mounting the injector to the engine block or cylinder head. This secure attachment is vital for the precise delivery of fuel into the combustion chamber, directly influencing engine performance and efficiency.

Lever and Rocker

In systems involving levers and rockers, such as those found in valvetrains, the Twelve Point Cap Screw is employed to fasten these components. This ensures that the lever and rocker mechanisms operate smoothly and with minimal play, contributing to the overall stability and performance of the engine.

Module

Within engine control modules (ECMs) and other electronic control units (ECUs), the Twelve Point Cap Screw is used to secure the module housing. This not only protects the sensitive electronic components from environmental factors but also ensures that the module remains firmly in place during engine operation.

Engine Control Parts

Various engine control parts, such as sensors and actuators, rely on the Twelve Point Cap Screw for secure installation. This ensures that these components are accurately positioned and remain stable, allowing for precise engine control and monitoring.

Performance Plumbing

In high-performance plumbing systems, where materials and connections are subjected to greater stress, the Twelve Point Cap Screw provides the necessary strength and reliability. This is particularly important in racing or high-output engines where performance and durability are paramount.

General Plumbing and Fuel Systems

Across general plumbing and fuel systems, the Twelve Point Cap Screw is a common fastener for joining pipes, hoses, and other components. Its use ensures that these systems remain intact and function correctly under varying conditions and pressures.

Conclusion

In summary, the Part 3079794 Twelve Point Cap Screw is a versatile and reliable component that enhances the functionality and durability of various engine systems. Its application across different components underscores its importance in maintaining engine performance and integrity.