4982142
Twelve Point Cap Screw
Cummins®

The Twelve Point Cap Screw, part number 4982142 by Cummins, is a specialized fastener designed for use in commercial truck applications. This screw is crucial for ensuring the structural integrity and operational efficiency of trucks, particularly in heavy-duty scenarios where reliability and performance are paramount ¹.

Basic Concepts of Twelve Point Cap Screws

A Twelve Point Cap Screw features a dodecagonal (12-sided) head, which provides a larger contact area compared to standard hex cap screws. This design reduces the risk of cam-out during tightening, allowing for more consistent torque application. The threading on twelve point cap screws is typically coarse, which facilitates easier insertion and removal. These screws are often made from high-strength materials such as alloy steel, which enhances their durability and resistance to wear. They are commonly used in applications requiring high torque and secure fastening, such as in the assembly of heavy machinery and commercial vehicles ².

Role of the 4982142 Twelve Point Cap Screw in Truck Operation

This Cummins part is integral to various assemblies within a truck. It is used in applications where secure fastening is required to maintain structural integrity and operational efficiency. This screw helps in attaching critical components, ensuring that they remain firmly in place under the dynamic loads and vibrations experienced during truck operation. Its design contributes to the overall reliability of the truck by providing a stable and secure connection between parts ³.

Key Features

The 4982142 Twelve Point Cap Screw boasts several key features that enhance its performance in heavy-duty applications. Its dodecagonal head design allows for better torque application and reduced risk of cam-out. The screw is made from high-strength alloy steel, which provides excellent durability and resistance to corrosion. It also features precise threading that ensures a secure fit and easy installation. Additionally, the screw is designed to meet specific torque specifications, ensuring consistent performance across applications.

Benefits

The benefits of using the 4982142 Twelve Point Cap Screw include improved torque application, which leads to more secure fastening. The reduced risk of cam-out ensures that the screw can be tightened more consistently, minimizing the potential for loosening over time. Enhanced fastening security contributes to the overall performance and reliability of the truck, reducing the likelihood of component failure due to loose fasteners. These attributes make this part an excellent choice for applications where durability and secure fastening are critical.

Troubleshooting and Maintenance

Common issues associated with Twelve Point Cap Screws include loosening, corrosion, and damage. Regular inspection of these screws is recommended to ensure they remain in good condition. Maintenance practices should include checking for signs of wear or corrosion and tightening as necessary. If a screw shows significant damage or corrosion, it should be replaced to maintain the reliability of the truck. Proper maintenance of these screws contributes to the longevity and performance of the vehicle.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes diesel and natural gas engines, as well as related technologies. With a history of innovation and expertise in the commercial vehicle industry, Cummins is committed to providing high-quality components that enhance the performance and reliability of trucks. The 4982142 Twelve Point Cap Screw is a testament to Cummins’ dedication to delivering durable and efficient solutions for the heavy-duty truck market.

Twelve Point Cap Screw in Cummins Engines

The Twelve Point Cap Screw, identified by part number 4982142, is a critical component in several Cummins engines, ensuring robust and reliable assembly. This screw is engineered to provide superior strength and stability, essential for maintaining the integrity of engine structures under operational stress.

B3.3 Engine Series

In the B3.3 engine series, the Twelve Point Cap Screw is utilized in various applications, including securing engine components and ensuring proper alignment. Its design allows for precise torque application, which is vital for maintaining the engine’s operational efficiency and longevity. The screw’s twelve-point profile provides better grip and reduces the likelihood of cam-out, a common issue with traditional hex-head screws.

Grouping of Applications

The Twelve Point Cap Screw is integral in several key areas within the B3.3 engine series:

• Engine Block Assembly: It is used to secure the engine block to the cylinder head, ensuring that all components are tightly fastened and properly aligned.
• Turbocharger Mounting: This screw is often employed in mounting the turbocharger to the engine, a critical application where precise torque and stability are necessary.
• Accessory Drive Systems: It is also used in the assembly of accessory drive systems, ensuring that pulleys and belts are securely fastened and properly aligned.

The use of the Twelve Point Cap Screw in these applications highlights its importance in maintaining the structural integrity and operational efficiency of Cummins engines.

Role of Part 4982142 Twelve Point Cap Screw in Engine Components

The 4982142 Twelve Point Cap Screw is integral in securing and maintaining the structural integrity of various engine components.

In the block, this cap screw is utilized to fasten components that require high tensile strength and resistance to loosening due to vibrations. Its twelve-point design ensures that it can be tightened and loosened with precision, minimizing the risk of rounding off the screw head.

Within the cylinder, the Twelve Point Cap Screw plays a role in securing cylinder head components, ensuring a tight seal and proper alignment. This is essential for maintaining compression and preventing leaks, which are vital for engine performance.

The cylinder block assembly often incorporates this cap screw to secure critical components such as main bearings, gaskets, and other structural elements. Its design allows for consistent torque application, which is necessary for the uniform distribution of forces within the cylinder block.

In a long block configuration, which includes the cylinder block, crankshaft, pistons, and other essential components, the Twelve Point Cap Screw is used extensively. It secures the cylinder head to the block, fastens the oil pan, and attaches various brackets and mounts. This ensures that all components remain firmly in place, even under the high stresses and vibrations encountered during engine operation.

Conclusion

The 4982142 Twelve Point Cap Screw by Cummins is a critical component in both truck and engine assemblies, providing superior strength, stability, and secure fastening. Its unique design and high-strength materials ensure consistent performance and reliability in heavy-duty applications. Regular maintenance and proper use of this part are essential for maintaining the structural integrity and operational efficiency of commercial trucks and Cummins engines.