3074633
Twelve Point Cap Screw
Cummins®

The Twelve Point Cap Screw, Part #3074633, manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. Cummins, a well-established name in the commercial truck industry, produces a range of components that enhance the performance and reliability of heavy-duty vehicles. This particular cap screw is integral to various mechanical assemblies within commercial trucks, ensuring secure fastening and reliable operation under demanding conditions.

Basic Concepts of Twelve Point Cap Screws

A Twelve Point Cap Screw is a type of fastener characterized by its hexagonal socket head, which allows for increased torque application compared to traditional hex-head screws. This design reduces the likelihood of cam-out, where the driver slips out of the fastener head, and provides a more secure grip during installation and removal. Twelve Point Cap Screws are commonly used in applications requiring high torque and resistance to loosening, making them suitable for various mechanical assemblies ¹.

Purpose and Role in Truck Operation

The Twelve Point Cap Screw, Part #3074633, plays a specific role in the mechanical systems of commercial trucks. It is used to secure components that experience significant stress and vibration, such as engine mounts, transmission housings, and chassis parts. By providing a robust and reliable fastening solution, this cap screw helps maintain the integrity of critical truck systems, ensuring safe and efficient operation ².

Key Features

The Twelve Point Cap Screw, Part #3074633, boasts several key features that enhance its performance and durability. Its twelve-point design allows for higher torque application without the risk of cam-out, ensuring a secure fit. The screw is typically made from high-strength materials, such as alloy steel, which provides excellent resistance to corrosion and wear. Additionally, the cap screw may feature a coated finish to further protect against environmental factors and improve longevity ³.

Benefits

Using the Twelve Point Cap Screw, Part #3074633, offers several benefits. The design of the screw provides improved fastening security, reducing the risk of loosening over time. Its high torque capacity ensures that components remain firmly in place, even under extreme conditions. The material composition and potential coatings enhance the screw’s resistance to corrosion and wear, contributing to its longevity in harsh operating environments.

Installation Considerations

Proper installation of the Twelve Point Cap Screw, Part #3074633, is crucial for optimal performance and safety. It is recommended to use the appropriate torque wrench to achieve the specified torque settings, ensuring that the screw is tightened to the manufacturer’s recommendations. Over-tightening should be avoided to prevent damage to the fastener or the components being secured. Additionally, using the correct socket tool will help maintain the integrity of the screw’s head during installation and removal.

Troubleshooting Common Issues

Common issues with Twelve Point Cap Screws may include loosening, corrosion, or damage to the screw head. To address these problems, regular inspections should be conducted to identify any signs of wear or corrosion. If a screw appears loose, it should be re-tightened to the specified torque settings. In cases of severe corrosion or damage, the screw may need to be replaced to ensure the continued reliability of the fastened components.

Maintenance Tips

Regular maintenance of Twelve Point Cap Screws is essential to prolong their service life and maintain their effectiveness. Inspecting screws for signs of wear, corrosion, or loosening during routine maintenance checks will help identify issues before they become critical. Applying a protective coating or lubricant, if recommended by the manufacturer, can further enhance the screws’ resistance to environmental factors and reduce the risk of seizing or corrosion.

Cummins: Manufacturer Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration systems, and aftermarket parts. With a history spanning over a century, Cummins has established a strong reputation for quality, reliability, and innovation in the commercial truck industry. The company’s extensive product range and commitment to customer satisfaction make it a preferred choice for commercial truck operators and maintenance professionals.

Twelve Point Cap Screw 3074633 in Cummins Engines

The Twelve Point Cap Screw 3074633, manufactured by Cummins, is a critical component in several of their engine models. This screw is integral to the assembly and maintenance of the engines, ensuring structural integrity and operational efficiency.

N14 CELECT and N14 CELECT PLUS

In the N14 CELECT and N14 CELECT PLUS engines, the Twelve Point Cap Screw 3074633 is utilized in various applications. These engines, known for their robust design and performance, require reliable fastening solutions to maintain the alignment and stability of critical components. The screw’s twelve-point design provides a better grip and reduces the likelihood of stripping, which is essential in the high-stress environments these engines operate in.

N14 MECHANICAL

The N14 MECHANICAL engine also incorporates the Twelve Point Cap Screw 3074633 in its construction. This engine variant, which relies on mechanical rather than electronic controls, benefits from the screw’s precision and durability. The screw’s role in securing various parts ensures that the engine can withstand the rigors of heavy-duty operations.

NH/NT 855

Similarly, the NH/NT 855 engine utilizes the Twelve Point Cap Screw 3074633 for its assembly. This engine, designed for both on-highway and off-highway applications, requires a fastening solution that can handle varying operational conditions. The screw’s design and material properties make it suitable for the demanding environments these engines encounter.

In summary, the Twelve Point Cap Screw 3074633 is a vital component across multiple Cummins engine models, ensuring the reliability and performance of these engines through its precise and durable fastening capabilities.

Role of Part 3074633 Twelve Point Cap Screw in Engine Systems

The Part 3074633 Twelve Point Cap Screw is integral to the assembly and maintenance of various engine components. Its application ensures secure fastening and reliable operation across different engine systems.

Engine Repair Stand

In an engine repair stand, the Twelve Point Cap Screw is used to fasten components securely. This allows for stable and safe engine mounting during repair or maintenance procedures. The screw’s design ensures that parts remain firmly in place, reducing the risk of movement or misalignment during work.

Flywheel Housing

When assembling the flywheel housing, the Twelve Point Cap Screw plays a key role in attaching the housing to the engine block. This secure attachment is essential for maintaining the structural integrity of the flywheel system, ensuring smooth operation and preventing any potential damage from vibrations or misalignment.

Mounting

For engine mounting, the Twelve Point Cap Screw is employed to fasten the engine to its frame or chassis. This secure connection is vital for absorbing engine vibrations and ensuring that the engine remains stable during operation. Proper mounting is essential for the longevity and performance of the engine.

Starting Motor

In the starting motor assembly, the Twelve Point Cap Screw is used to attach the motor to the engine. This secure fastening ensures that the starting motor operates efficiently, providing the necessary torque to start the engine without any risk of detachment or failure.

Starter Spacer

The starter spacer, which is used to maintain the correct distance between the starter motor and the flywheel, is also secured using the Twelve Point Cap Screw. This ensures that the starter motor engages properly with the flywheel, facilitating a smooth and reliable start-up process.

Starting Motor

Similarly, within the starting motor itself, the Twelve Point Cap Screw is utilized to fasten internal components, ensuring that all parts are held firmly in place. This is important for the consistent and reliable operation of the starting motor, contributing to the overall efficiency of the engine start-up sequence.

Conclusion

The Twelve Point Cap Screw, Part #3074633, is a critical component in the assembly and maintenance of commercial truck engines. Its design and material properties ensure secure fastening and reliable operation under demanding conditions. Proper installation, regular maintenance, and timely replacement of worn or damaged screws are essential for maintaining the integrity and performance of engine systems.