205643
Twelve Point Cap Screw
Cummins®

Twelve Point Cap Screws are essential components in the assembly and maintenance of commercial trucks, providing secure fastening solutions that ensure the structural integrity and functionality of various truck components. This article focuses on the 205643 Twelve Point Cap Screw by Cummins, a model specifically designed for heavy-duty applications. We will explore the role and significance of Twelve Point Cap Screws, delve into the basic concepts and advantages of a twelve-point design, discuss the specific applications and key features of the 205643 model, highlight its benefits, provide troubleshooting and maintenance tips, and offer a brief overview of Cummins Inc.

Basic Concepts of Twelve Point Cap Screws

A Twelve Point Cap Screw is a type of fastener characterized by its twelve-sided head, which offers distinct advantages over traditional six-point designs ¹. The twelve-point design allows for greater contact area between the wrench and the screw head, reducing the likelihood of cam-out—a situation where the wrench slips off the screw head during tightening or loosening. This design enhances torque application efficiency and provides better resistance to stripping, ensuring more reliable fastening in demanding applications. Twelve Point Cap Screws are commonly used in environments where high torque and secure fastening are required, such as in the construction and automotive industries.

Purpose of the 205643 Twelve Point Cap Screw

The 205643 Twelve Point Cap Screw by Cummins is specifically engineered for use in heavy-duty trucks. It plays a role in securing critical components, such as engine mounts, transmission housings, and chassis parts, contributing to the overall structural integrity and performance of the truck. By providing a secure and reliable fastening solution, the 205643 model helps maintain the alignment and stability of these components, ensuring optimal truck operation and safety.

Key Features

The 205643 Twelve Point Cap Screw boasts several key features that enhance its performance and durability. It is typically made from high-strength alloy steel, offering excellent tensile strength and resistance to wear and tear ². The screw features a fine thread pitch, which allows for precise adjustments and secure fastening. Additionally, it may be treated with special coatings or finishes, such as zinc plating or black oxide, to provide corrosion resistance and improve longevity in harsh operating environments.

Benefits

Using the 205643 Twelve Point Cap Screw offers several benefits. Its twelve-point design allows for more efficient torque application, reducing the risk of cam-out and stripping during installation and removal. The high-strength material and fine thread pitch ensure a secure and reliable fastening solution, while special coatings enhance corrosion resistance and durability. These features contribute to the screw’s ability to maintain secure fastening over time, even in demanding applications.

Troubleshooting and Maintenance

To ensure the longevity and reliable performance of the 205643 Twelve Point Cap Screw, it is important to follow recommended maintenance practices. Regular inspection for signs of corrosion, wear, or damage is crucial. If corrosion is detected, cleaning the affected area and reapplying a protective coating can help prevent further degradation. Over-tightening should be avoided, as it can lead to stripping or damage to the screw or the fastened components. Using the appropriate torque settings and ensuring that the screw is properly lubricated during installation can help maintain its performance and extend its service life.

About Cummins

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 has established itself as a trusted name in the automotive and heavy-duty truck industries. The company is renowned for its expertise in diesel engines and related technologies, and it is committed to delivering high-quality, innovative solutions that meet the demanding needs of its customers. Cummins’ dedication to quality and innovation is evident in its range of products, including the 205643 Twelve Point Cap Screw, which is designed to provide reliable performance in heavy-duty applications.

Role of Part 205643 Twelve Point Cap Screw in Engine Systems

Part 205643, a Twelve Point Cap Screw, is integral to the assembly and securement of various components within engine systems. Its application spans across multiple kits and assemblies, ensuring stability and reliability in operation.

Base Kits

In the 450A 24VDC D/L Base Kit, 450B 12VDC Base Kit, 450B 24VDC Base Kit, 450B 24VDC D/L Base Kit, 455B 12VDC Base Kit, 455B 24VDC Base Kit, and 455B 24VDC D/L Base Kit, the Twelve Point Cap Screw is used to fasten critical components. It secures the base plate to the engine frame, ensuring that the electrical and mechanical connections remain intact under operational stress.

Brake Systems

For the Brake and C Brake Kit, the screw plays a role in attaching brake components to the engine assembly. This includes securing brake calipers, mounting brackets, and other ancillary parts that are essential for the effective functioning of the braking system.

Engine and Control Systems

In the Engine and Control systems, the Twelve Point Cap Screw is employed to fasten control modules, sensors, and other electronic components to the engine block or chassis. This ensures that these sensitive parts remain securely in place, preventing any dislodgement that could lead to malfunction.

Coupling and Fuel Systems

For the Coupling and Fuel Pump assemblies, including the Fuel Pump Coupling, the screw is used to secure coupling mechanisms and fuel lines to the engine. This is vital for maintaining the integrity of fuel delivery systems, ensuring consistent and reliable fuel flow to the engine.

Specialized Brake Kits

In specialized kits like the Cummins Engine Brake Kit and Engine Kit Brake, the screw is utilized to attach brake actuators and other braking components to the engine. This securement is essential for the precise operation of engine braking systems, which are crucial for vehicle control and safety.

Model-Specific Kits

For model-specific kits such as the Model 440 12VDC Base Kit, Model 440 24VDC Base Kit, Model 450A 24VDC Base Kit, and Model 450A VDC Base Kit, the Twelve Point Cap Screw is used to fasten base components and ensure that all electrical and mechanical connections are secure. This is particularly important in maintaining the performance and reliability of these model-specific engine systems.

Overall, the Twelve Point Cap Screw (Part 205643) is a versatile fastener that contributes to the secure assembly and reliable operation of various engine components across different systems and kits.

Conclusion

The 205643 Twelve Point Cap Screw by Cummins is a critical component in the assembly and maintenance of heavy-duty trucks and engine systems. Its twelve-point design, high-strength material, and special coatings provide efficient torque application, secure fastening, and enhanced durability. Regular maintenance and proper installation practices are essential to ensure the longevity and reliable performance of this Cummins part. Cummins Inc.’s commitment to quality and innovation is reflected in the design and functionality of the 205643 Twelve Point Cap Screw, making it a trusted solution for demanding applications in the automotive and heavy-duty truck industries.