3968467
Twelve Point Cap Screw
Cummins®

The Twelve Point Cap Screw, Part #3968467, manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. Cummins, a well-established name in the automotive and heavy-duty truck industry, produces this component to meet the rigorous demands of truck operations. This screw plays a role in ensuring the structural integrity and efficient functioning of various truck components.

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, during tightening. Twelve Point Cap Screws are commonly used in mechanical assemblies where high torque and secure fastening are required. They are particularly useful in applications where space is limited, as their design allows for a lower profile compared to other types of fasteners ¹.

Purpose of the 3968467 Twelve Point Cap Screw in Truck Operations

This Cummins part is integral to the operation and maintenance of commercial trucks. It is used to secure various components, ensuring they remain firmly in place under the dynamic and often harsh conditions encountered in truck operations. This screw helps maintain the alignment and integrity of critical parts, contributing to the overall safety and performance of the vehicle ².

Key Features

The 3968467 Twelve Point Cap Screw boasts several key features that enhance its performance and reliability. Its twelve-point design provides a larger contact area, allowing for higher torque application without the risk of stripping or cam-out. The screw is made from high-strength materials, ensuring durability and resistance to wear and tear. Additionally, it features a precision-machined thread that ensures a secure fit and reduces the likelihood of loosening over time ³.

Benefits of Using the 3968467 Twelve Point Cap Screw

Using this part offers several advantages. Its design allows for easier and more efficient installation, reducing the time and effort required during maintenance procedures. The screw’s resistance to loosening ensures that components remain securely fastened, even under vibration and dynamic loads. Furthermore, its durability and high-strength material contribute to a longer service life, reducing the need for frequent replacements.

Installation Process

Proper installation of the 3968467 Twelve Point Cap Screw is crucial for ensuring optimal performance and longevity. Begin by cleaning the mating surfaces to remove any dirt or debris. Use a torque wrench to apply the recommended torque specification, ensuring the screw is tightened to the manufacturer’s guidelines. Avoid over-tightening, as this can lead to thread damage or component failure. Regularly inspect the screw for signs of wear or loosening and re-tighten as necessary.

Troubleshooting Common Issues

Common issues with Twelve Point Cap Screws include loosening, corrosion, and thread damage. To address loosening, ensure the screw is properly torqued during installation and periodically check for any signs of movement. Corrosion can be mitigated by using screws made from corrosion-resistant materials and applying a protective coating if necessary. Thread damage may require the use of a thread repair kit or replacement of the screw.

Maintenance Tips

Regular maintenance of the 3968467 Twelve Point Cap Screw is essential for preventing issues and extending its lifespan. Inspect the screw periodically for signs of wear, corrosion, or loosening. Clean the mating surfaces and apply a thread lubricant if needed to facilitate easier installation and reduce the risk of galling. Follow the manufacturer’s torque specifications during re-tightening to ensure the screw remains securely fastened.

Cummins: Manufacturer Overview

Cummins is a renowned manufacturer in the automotive and heavy-duty truck industry, known for its commitment to quality and innovation. With a rich history of producing reliable and high-performance components, Cummins has established a strong reputation for excellence. The company’s dedication to research and development ensures that its products, including the 3968467 Twelve Point Cap Screw, meet the demanding requirements of commercial truck operations.

Twelve Point Cap Screw 3968467 in Cummins Engines

The Twelve Point Cap Screw 3968467, manufactured by Cummins, is a critical component in various Cummins engine models. This screw is integral to the assembly and maintenance of these engines, ensuring secure fastening and structural integrity.

ISC Series Engines

The ISC series engines, including the ISC CM2150, ISC CM554, ISC CM850, and ISC8.3 CM2250, utilize the 3968467 screw in several key areas. These engines are known for their reliability and performance in various applications, and the cap screw plays a vital role in maintaining their operational efficiency.

ISL Series Engines

Similarly, the ISL series engines, such as the ISL CM2150, ISL CM554, ISL9 CM2150 SN, and ISL9 CM2250, incorporate the 3968467 screw in their construction. These engines are designed for heavy-duty applications, and the cap screw’s strength and durability are essential for their performance.

QSC and QSL Series Engines

The QSC and QSL series engines, including the QSC8.3 CM554, QSC8.3 CM850 (CM2850), QSL8.9 CM2150 L141, QSL9 CM2350 L102, QSL9 CM554, and QSL9 CM850 (CM2850), also feature the 3968467 screw. These engines are engineered for high-performance and efficiency, and the cap screw’s precision and reliability are crucial for their operation.

C Series Engines

The C series engines, such as the C GAS PLUS CM556, C8.3 G, G8.3, and QSL9 CM2350 L102, incorporate the 3968467 screw in their design. These engines are known for their versatility and are used in a variety of applications, with the cap screw playing a key role in their assembly and maintenance.

The 3968467 Twelve Point Cap Screw is a testament to Cummins’ commitment to quality and durability, ensuring that these engines perform reliably and efficiently across various applications.

Role of Part 3968467 Twelve Point Cap Screw in Engine Systems

In the intricate assembly of engine systems, the part 3968467 Twelve Point Cap Screw serves as a fundamental fastening element. Its primary function is to securely attach various components, ensuring structural integrity and operational efficiency.

Attachment of Components

The Twelve Point Cap Screw is instrumental in attaching the starting motor to the engine block. This secure attachment is vital for the proper functioning of the starting motor, as it ensures that the motor is firmly in place and can effectively engage with the flywheel to initiate engine start-up.

Starting Motor Mounting

In the context of starting motor mounting, the Twelve Point Cap Screw plays a significant role. It is used to mount the starting motor securely to the engine, providing the necessary stability and alignment. This secure mounting is essential for the starting motor to deliver consistent and reliable performance, especially during the critical moments of engine start-up.

General Mounting Applications

Beyond specific applications, the Twelve Point Cap Screw is widely used in various mounting scenarios within engine systems. Whether it is mounting ancillary components, securing brackets, or attaching covers, this cap screw ensures that all parts are held in place with precision and reliability. Its twelve-point design offers enhanced grip and reduced risk of cam-out, making it ideal for high-torque applications.

Ensuring Structural Integrity

By providing a robust and reliable fastening solution, the Twelve Point Cap Screw contributes to the overall structural integrity of the engine system. It helps maintain the alignment and positioning of critical components, which is essential for the smooth operation and longevity of the engine.

Conclusion

In summary, the part 3968467 Twelve Point Cap Screw is a key component in the assembly and maintenance of engine systems, offering secure and reliable fastening across a variety of applications. Its design, durability, and performance make it an essential part in the operation of commercial trucks and Cummins engines.