3074628
Twelve Point Cap Screw
Cummins®

The Twelve Point Cap Screw, Part #3074628 by Cummins, is a specialized fastener designed for use in commercial truck maintenance. Cummins Inc., a well-established manufacturer of diesel engines, components, and related technologies, produces this part. The Twelve Point Cap Screw is integral to ensuring the reliability and efficiency of truck components and systems.

Basic Concepts of Twelve Point Cap Screws

A Twelve Point Cap Screw is a type of bolt characterized by its hexagonal socket head with twelve equally spaced points. This design allows for greater contact area between the screwdriver and the screw head, which enhances torque application and reduces the risk of cam-out—a situation where the screwdriver slips out of the screw head ¹. Twelve Point Cap Screws are commonly used in mechanical assemblies where high torque and secure fastening are required.

Role of the 3074628 Twelve Point Cap Screw in Truck Operation

This Cummins part plays a specific role in the context of commercial truck components and systems. It is often used in applications where secure fastening is paramount, such as in engine components, chassis assemblies, and other critical areas where vibrations and dynamic loads are present. Its design ensures that it remains tightly fastened, contributing to the overall integrity and performance of the truck ².

Key Features of the 3074628 Twelve Point Cap Screw

This part is defined by several design elements and material properties. Its twelve-point head design provides a larger contact area compared to traditional hex screws, which improves torque application and reduces the likelihood of cam-out. The screw is manufactured using high-strength materials, ensuring durability in heavy-duty applications. Additionally, precision machining processes are employed to ensure consistent quality and performance ³.

Benefits of Using the 3074628 Twelve Point Cap Screw

The 3074628 Twelve Point Cap Screw offers several advantages. Its design allows for improved torque application, making it easier to achieve the required fastening force without damaging the screw head. The resistance to cam-out ensures that the screw remains securely fastened, even under dynamic loads. Furthermore, the high-strength material used in its construction provides durability, making it suitable for heavy-duty applications in commercial trucks ⁴.

Installation Considerations

Proper installation of this part is vital to ensure its effectiveness and longevity. Torque specifications provided by the manufacturer should be followed to achieve the correct fastening force. Using the appropriate tools, such as a torque wrench and a compatible screwdriver, is recommended to prevent damage to the screw head and ensure a secure fit. Additionally, ensuring that the mating surfaces are clean and free of debris will contribute to a proper installation ⁵.

Troubleshooting Common Issues

Typical problems associated with Twelve Point Cap Screws include loosening over time, damage to the screw head, and corrosion. To diagnose these issues, regular inspections should be conducted to check for signs of wear or damage. If loosening is detected, re-torque the screw to the specified value. Damaged screw heads may require replacement of the screw. Corrosion can be mitigated by using screws made from corrosion-resistant materials and applying appropriate coatings or treatments ⁶.

Maintenance Practices

To ensure the longevity and reliability of this part, recommended maintenance routines should be followed. Regular inspections should be conducted to check for signs of wear, corrosion, or loosening. If any issues are detected, appropriate actions should be taken, such as re-torquing or replacing the screw. Additionally, keeping the mating surfaces clean and free of debris will help maintain the integrity of the fastening ⁷.

Cummins: A Brief Overview

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 is committed to providing high-quality components for commercial vehicles. The company’s product range includes diesel engines, natural gas engines, and related technologies, all designed to meet the demanding requirements of heavy-duty applications. Cummins’ commitment to quality is evident in its rigorous manufacturing processes and dedication to innovation ⁸.

Part 3074628 Twelve Point Cap Screw Component Usage

This part is instrumental in the assembly and securement of various components within engine systems. Its application ensures the structural integrity and proper functioning of these components.

Cover

In the context of engine covers, the Twelve Point Cap Screw is used to fasten the cover securely to the engine frame. This not only protects internal components from external contaminants but also ensures that the cover remains in place during operation, maintaining the engine’s aerodynamics and cooling efficiency.

Starter Flange and Flywheel Housing

For the starter flange and flywheel housing, the Twelve Point Cap Screw plays a significant role in attaching these components to the engine block. This secure attachment is essential for the reliable operation of the starter motor, ensuring that it can engage with the flywheel without any movement or misalignment.

Housing and Flywheel

When it comes to the housing and flywheel, the Twelve Point Cap Screw is utilized to maintain the precise alignment between these two components. Proper alignment is vital for the smooth transfer of rotational energy from the starter motor to the flywheel, which in turn cranks the engine.

Motor Starting and Mounting

In the starting motor and its mounting, the Twelve Point Cap Screw ensures that the motor is firmly attached to the engine frame. This secure mounting is necessary for the motor to deliver consistent torque to the flywheel, facilitating a reliable start-up process.

Starter Hole Cover and Starter Mounting Cover

Lastly, for the starter hole cover and starter mounting cover, the Twelve Point Cap Screw is employed to keep these covers in place. These covers protect the starter mechanism from debris and moisture, prolonging the lifespan of the starter motor and ensuring reliable engine starts.

Conclusion

The 3074628 Twelve Point Cap Screw by Cummins is a critical component in the maintenance and operation of commercial trucks. Its design and material properties ensure secure fastening and durability in heavy-duty applications. Proper installation, regular maintenance, and timely troubleshooting are essential to maximize the performance and longevity of this part.