3094525
Twelve Point Cap Screw
Cummins®

The 3094525 Twelve-Point Cap Screw, manufactured by Cummins, is a specialized fastener designed for use in commercial truck maintenance and operation. Cummins, a well-established name in the commercial truck industry, produces this component to meet the demanding requirements of heavy-duty applications. This part is integral to ensuring the secure fastening of various truck components, contributing to the overall reliability and performance of commercial vehicles.

Basic Concepts of Twelve-Point Cap Screws

A Twelve-Point Cap Screw is a type of fastener characterized by its hexagonal head with six additional points, providing a larger contact area compared to traditional hex cap screws. This design allows for better torque application and reduced risk of cam-out during tightening. In the automotive industry, twelve-point cap screws are commonly used in applications where high torque and secure fastening are required, such as in engine components, transmission systems, and chassis assemblies ¹.

Purpose and Role in Truck Operation

The 3094525 Twelve-Point Cap Screw plays a specific role in the operation of a truck by securely fastening critical components and systems. It is typically used in applications where high tensile strength and resistance to loosening are necessary. These may include engine mounts, transmission housings, and chassis components. The screw ensures that these parts remain firmly in place under the dynamic loads and vibrations experienced during truck operation.

Key Features

The 3094525 Twelve-Point Cap Screw features a robust design that includes a twelve-point head for enhanced torque application and reduced cam-out risk. It is made from high-quality materials, such as alloy steel, to provide superior strength and durability. The screw has a fine thread pitch, which allows for precise adjustments and secure fastening. Additionally, it may include features such as a corrosion-resistant coating to enhance its performance in harsh environments.

Benefits

The 3094525 Twelve-Point Cap Screw offers several benefits that contribute to its effectiveness in commercial truck applications. Its design allows for improved torque application, ensuring that components are securely fastened. The twelve-point head reduces the risk of cam-out, making the installation process more efficient. The screw’s material and threading provide excellent resistance to loosening, even under high vibrations and dynamic loads. Furthermore, its durability in harsh environments ensures long-term reliability and performance.

Installation Guidelines

Proper installation of the 3094525 Twelve-Point Cap Screw is crucial to ensure secure fastening and optimal performance. The following guidelines should be followed:

1. Use the appropriate torque wrench to apply the recommended torque specifications.
2. Ensure that the mating surfaces are clean and free of debris to prevent galling and ensure a proper fit.
3. Apply a thread locker compound if specified by the manufacturer to enhance resistance to loosening.
4. Tighten the screw in a criss-cross pattern to ensure even distribution of torque and prevent warping of the fastened components.

Troubleshooting Common Issues

Common issues associated with Twelve-Point Cap Screws include stripping and corrosion. To troubleshoot these problems:

1. For stripped screws, replace the fastener with a new one of the appropriate size and grade.
2. To address corrosion, clean the affected area thoroughly and apply a corrosion-resistant coating or lubricant to prevent further degradation.

Maintenance Tips

Regular maintenance of Twelve-Point Cap Screws is important to ensure their longevity and reliable performance. The following tips should be observed:

1. Inspect screws regularly for signs of wear, corrosion, or loosening.
2. Clean screws and mating surfaces as part of routine maintenance to prevent buildup of debris and contaminants.
3. Re-torque screws periodically to ensure they remain securely fastened, especially after major service intervals or repairs.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. Founded in 1919, Cummins has a long-standing reputation for innovation, quality, and reliability in the commercial truck industry. The company offers a wide range of products and services, including engines, powertrains, and aftermarket parts, designed to meet the needs of various industries and applications. Cummins’ commitment to excellence and customer satisfaction has established it as a trusted name in the commercial truck market.

Twelve-Point Cap Screw in Cummins Engines

The Twelve-Point Cap Screw part number 3094525, 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 typical of engine assemblies.

QST30 CM552 Engines

In the QST30 CM552 engine series, the Twelve-Point Cap Screw 3094525 is utilized in several key areas. It is often employed in the engine’s cylinder head assembly, where it secures the head to the engine block. This ensures that the combustion chamber remains sealed, preventing leaks and maintaining optimal engine performance. Additionally, this screw is used in various other components, such as the intake and exhaust manifolds, where it helps maintain the structural integrity of these parts under operational stresses.

Grouping of Engines

The Twelve-Point Cap Screw 3094525 is also a common fixture in other Cummins engine groups, particularly those designed for heavy-duty applications. These engines often share similar design philosophies and component layouts, making the screw a versatile and essential part across multiple models. Its application extends to securing various engine mounts, brackets, and other ancillary components that require reliable fastening solutions.

The use of the Twelve-Point Cap Screw in these engines underscores its importance in ensuring the longevity and reliability of the engine assemblies. Its design allows for precise torque application, which is crucial for maintaining the integrity of the engine’s components over time.

Part 3094525 Twelve-Point Cap Screw Component Usage

In the intricate assembly of engine systems, the part 3094525 Twelve-Point Cap Screw plays a significant role in ensuring the secure and reliable connection of various components. Its application is particularly notable in the following areas:

Fuel Injection Pump

The fuel injection pump is a vital component responsible for delivering precise amounts of fuel into the engine’s combustion chambers. The Twelve-Point Cap Screw is utilized to fasten critical elements within the pump, such as the pump housing to the engine block or the mounting brackets that secure the pump in place. This ensures that the pump remains stable and aligned, allowing for consistent fuel delivery and optimal engine performance.

Lever

Levers are used in engine systems to transfer motion and apply force. In the context of fuel injection systems, levers may be employed to operate various mechanical components, such as the fuel rack or the governor. The Twelve-Point Cap Screw is essential for securing these levers to their respective mounting points. This secure attachment ensures that the lever operates smoothly and reliably, contributing to the accurate modulation of fuel delivery and engine speed.

Rocker

Rockers, or rocker arms, are components that transfer motion from the camshaft to the valves in an engine. They play a pivotal role in the valve train, ensuring that valves open and close at the correct times. The Twelve-Point Cap Screw is used to fasten the rocker arms to their pivot points and to secure them to the engine block or cylinder head. This secure attachment is vital for maintaining the precise operation of the valve train, which directly impacts engine efficiency and performance.

Conclusion

In summary, the 3094525 Twelve-Point Cap Screw is a fundamental fastener in engine systems, providing the necessary stability and reliability for components such as the fuel injection pump, levers, and rockers. Its role in these applications underscores the importance of secure and precise component attachment in achieving optimal engine function.