3968469
Twelve Point Cap Screw
Cummins®

The 3968469 Twelve Point Cap Screw, manufactured by Cummins, is a specialized fastener designed for use in commercial truck applications. Cummins, a well-established name in the automotive industry, is known for its commitment to quality and innovation. This particular cap screw is significant due to its role in ensuring the secure assembly of various components within commercial trucks, contributing to both the functionality and safety of the vehicle.

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 without the risk of cam-out, making it suitable for high-stress applications. Unlike other fasteners, the twelve point cap screw offers enhanced grip and stability, which is particularly beneficial in environments where vibrations and dynamic loads are common ¹.

Purpose and Role in Truck Operation

The 3968469 Twelve Point Cap Screw plays a specific role in the operation of commercial trucks by securely fastening critical components. Its design ensures that parts remain firmly in place under various operating conditions, which is vital for the overall functionality and safety of the vehicle. By providing a stable connection, this cap screw helps maintain the integrity of the truck’s structure and systems, ensuring reliable performance over time ².

Key Features

The 3968469 Twelve Point Cap Screw features a robust design that includes a twelve-sided socket head, which allows for increased torque application without the risk of rounding off the head. It is typically made from high-strength materials, such as alloy steel, to ensure durability and resistance to wear. The screw’s unique characteristics, including its enhanced grip and stability, set it apart from other fasteners, making it ideal for heavy-duty applications ³.

Benefits

Using the 3968469 Twelve Point Cap Screw offers several advantages. Its design allows for improved torque application, which is crucial in high-stress environments. The screw’s resistance to loosening ensures that components remain securely fastened, even under dynamic loads and vibrations. Additionally, its durability makes it suitable for long-term use in heavy-duty applications, reducing the need for frequent replacements.

Installation and Usage Guidelines

Proper installation of the 3968469 Twelve Point Cap Screw is crucial for ensuring a secure fit. Begin by cleaning the mating surfaces to remove any debris or contaminants. Use a torque wrench to apply the specified torque, ensuring that the screw is tightened to the manufacturer’s recommended settings. It is important to follow best practices, such as using a lubricant if specified, to prevent damage to the screw or the surrounding components.

Troubleshooting and Maintenance

Common issues with twelve point cap screws include loosening due to vibrations and corrosion. To address these problems, regularly inspect the screws for signs of wear or damage. If loosening is detected, re-tighten the screw to the specified torque. In cases of corrosion, clean the affected area and apply a suitable anti-corrosion treatment. Regular maintenance will help ensure the longevity and reliability of the fastener.

Compatibility and Applications

The 3968469 Twelve Point Cap Screw is commonly used in various applications within commercial trucks. It is typically found in components that require secure fastening under high-stress conditions, such as engine mounts, transmission housings, and chassis components. Its compatibility with a wide range of truck models makes it a versatile choice for maintenance and repair professionals.

Cummins: Manufacturer Overview

Cummins Inc. is a leading manufacturer in the automotive industry, known for its history of innovation and commitment to quality. The company has built a reputation for producing reliable and high-performance components, including fasteners like the 3968469 Twelve Point Cap Screw. Cummins’ dedication to excellence ensures that their products meet the demanding requirements of commercial truck applications, providing customers with durable and efficient solutions.

Twelve Point Cap Screw 3968469 in Cummins Engines

The 3968469 Twelve Point Cap Screw, 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.

ISC Series Engines

The ISC series engines, including the ISC CM2150, ISC CM554, ISC CM850, and ISC8.3 CM2250, utilize the 3968469 screw in several key applications. These engines are known for their reliability and performance in various industrial and commercial applications. The screw’s twelve-point design allows for efficient torque application, which is crucial for maintaining the integrity of engine components under operational stress.

ISL Series Engines

Similarly, the ISL series engines, such as the ISL CM2150, ISL CM554, ISL9 CM2150 SN, and ISL9 CM2250, incorporate the 3968469 screw in their construction. These engines are designed for heavy-duty applications, and the screw’s strength and durability are essential for ensuring the longevity and performance of the engine.

QSC and QSL Series Engines

The QSC and QSL series engines, including the QSC8.3 CM554, QSC8.3 CM850 (CM2850), QSC9 CM2250/QSL9 CM2250, QSL8.9 CM2150 L141, QSL9 CM2250, QSL9 CM554, and QSL9 CM850 (CM2850), also feature the 3968469 screw. These engines are engineered for demanding applications, and the screw’s ability to withstand high torque and stress is vital for maintaining the structural integrity of the engine components.

The use of the 3968469 screw across these diverse engine models underscores its importance in ensuring reliable and efficient engine performance. Its design and material properties make it an ideal choice for the demanding environments in which these engines operate.

Role of Part 3968469 Twelve Point Cap Screw in Engine Systems

The 3968469 Twelve Point Cap Screw is integral to the secure assembly and operation of various engine components. Its primary function is to provide a robust fastening solution that ensures components remain firmly in place under the demanding conditions of engine operation.

Attachment and Fastening

In the context of engine systems, the Twelve Point Cap Screw is often used for the secure attachment of components. It plays a significant role in attaching the starting motor to its designated mounting points. This secure fastening is essential for maintaining the alignment and stability of the starting motor, which is vital for the reliable initiation of engine operation.

Starting Motor Mounting

The mounting of the starting motor is a critical application for the Twelve Point Cap Screw. By providing a strong and reliable connection, it ensures that the starting motor is held firmly in position. This is particularly important during the starting process, when the motor experiences significant mechanical stress. The Twelve Point Cap Screw’s design allows for efficient torque application, ensuring that the motor is securely fastened without the risk of stripping or loosening.

General Mounting Applications

Beyond the starting motor, the Twelve Point Cap Screw is also utilized in various other mounting applications within the engine system. It is commonly employed to secure brackets, covers, and other ancillary components that require a strong and durable fastening solution. Its twelve-point design offers enhanced resistance to cam-out, making it an ideal choice for applications where repeated tightening and loosening may occur.

Conclusion

In summary, the 3968469 Twelve Point Cap Screw is a versatile and reliable fastening component that plays a key role in the secure attachment and mounting of various engine components. Its robust design and performance make it an essential part in ensuring the integrity and functionality of engine systems.