3094731
Twelve Point Cap Screw
Cummins®

The Twelve Point Cap Screw, part number 3094731, manufactured by Cummins, is a critical component in the maintenance and operation of commercial trucks. Cummins, a renowned manufacturer in the commercial vehicle industry, produces this part to meet the demanding requirements of truck mechanics and operations. This article provides an overview of the Twelve Point Cap Screw, its function, and its significance in truck maintenance.

Basic Concepts of Twelve Point Cap Screws

A Twelve Point Cap Screw is a type of fastener characterized by its hexagonal socket head, which offers a larger contact area compared to traditional six-point cap 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 durability and resistance to stripping are essential. The primary difference between twelve-point and six-point cap screws lies in the head design, which provides enhanced grip and torque capacity in twelve-point variants ¹.

Role of the 3094731 Twelve Point Cap Screw in Truck Operation

The 3094731 Twelve Point Cap Screw by Cummins is integral to the operation and maintenance of commercial trucks. It is designed to secure various components within the truck’s structure, contributing to the overall structural integrity and functionality. By providing a secure and durable fastening solution, this cap screw ensures that critical parts remain firmly in place, even under significant stress and vibration, which are common in truck operations ².

Key Features

The 3094731 Twelve Point Cap Screw boasts several key features that enhance its performance and durability. It is manufactured from high-strength materials, ensuring resistance to wear and corrosion. The screw features a specific thread type that provides optimal engagement with mating components, facilitating secure fastening. Unique design elements, such as the twelve-point head, contribute to its enhanced grip and resistance to stripping, making it a reliable choice for truck maintenance ³.

Benefits

Utilizing the 3094731 Twelve Point Cap Screw offers several benefits. Its design provides improved resistance to stripping, ensuring that the screw remains intact even under high torque applications. The enhanced grip offered by the twelve-point head allows for more efficient torque transfer, reducing the likelihood of fastener failure. Additionally, the increased torque capacity of this screw contributes to the overall efficiency and reliability of truck operations, minimizing downtime and maintenance costs.

Troubleshooting and Maintenance

Common issues associated with Twelve Point Cap Screws include stripping and loosening over time. To address these issues, it is important to use the correct torque settings during installation to avoid over-tightening, which can lead to stripping. Regular inspections should be conducted to ensure that screws remain secure and have not loosened due to vibration or other factors. Proper maintenance, including the use of thread lockers where appropriate, can help ensure the longevity and performance of the 3094731 screw.

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 has established itself as a trusted name in the commercial vehicle industry. The company’s commitment to quality, innovation, and customer satisfaction is evident in its wide range of products, including the 3094731 Twelve Point Cap Screw, which is designed to meet the demanding requirements of commercial truck operations.

Twelve Point Cap Screw 3094731 in Cummins Engines

The Twelve Point Cap Screw 3094731, manufactured by Cummins, is a critical component in several of their engine models. This screw is integral to the assembly and maintenance of the QSM11 CM570 and QST30 CM552 engines.

In the QSM11 CM570 engine, the 3094731 screw is utilized in various applications where a robust fastening solution is required. Its twelve-point design ensures a secure grip, minimizing the risk of rounding off, which is crucial for maintaining engine integrity.

Similarly, in the QST30 CM552 engine, the 3094731 screw plays a vital role. Its application in this engine includes securing components that are subjected to high stress and vibration, ensuring that parts remain tightly fastened and aligned, which is essential for the engine’s performance and longevity.

Both engines benefit from the use of this cap screw due to its durability and reliability, making it a preferred choice for critical fastening tasks within these engine models.

Role of Part 3094731 Twelve Point Cap Screw in Engine Systems

In the intricate assembly of engine systems, the part 3094731 Twelve Point Cap Screw serves as a vital fastening component, ensuring the secure attachment of various elements. Its application spans across multiple critical connections within the engine’s exhaust system.

Connection Points

The Twelve Point Cap Screw is instrumental in establishing robust connections between the manifold and the exhaust system. It ensures that the manifold, which collects exhaust gases from the engine’s cylinders, is firmly attached to the exhaust system. This secure attachment is essential for maintaining the integrity of the exhaust flow and preventing leaks that could affect engine performance and emissions.

Exhaust Outlet and Expansion Adaptor

At the exhaust outlet, where the exhaust gases exit the engine, the Twelve Point Cap Screw plays a key role. It fastens the exhaust outlet to the exhaust expansion adaptor, a component designed to reduce the velocity of exhaust gases as they leave the engine. This connection is vital for optimizing the exhaust system’s efficiency and reducing noise levels.

Flex Exhaust Tubing

In the section where flex exhaust tubing is utilized, the Twelve Point Cap Screw ensures a tight and durable connection. Flex exhaust tubing is used to accommodate the movement and vibration of the engine, and the secure fastening provided by the cap screw is essential for maintaining the tubing’s flexibility and durability over time.

Turbocharger Exhaust Connection

For engines equipped with turbochargers, the Twelve Point Cap Screw is used in the turbocharger exhaust connection. This connection is where the exhaust gases are directed to spin the turbine in the turbocharger, which then compresses the intake air. A secure fastening here is important for efficient turbocharger operation and overall engine performance.

Muffler and Exhaust System Integration

Finally, the Twelve Point Cap Screw is employed in the integration of the muffler within the exhaust system. The muffler reduces noise levels and smooths out the exhaust flow. The cap screw ensures that the muffler is securely attached to the rest of the exhaust system, contributing to the system’s overall effectiveness in noise reduction and exhaust management.

Conclusion

In summary, the part 3094731 Twelve Point Cap Screw is a fundamental component in the secure assembly and operation of various engine system connections, from the manifold to the muffler, ensuring the engine’s exhaust system functions efficiently and reliably.