206511
Twelve Point Cap Screw
Cummins®

The Twelve Point Cap Screw, identified by part number 206511, is a specialized fastener produced by Cummins, a leading manufacturer in the commercial truck industry. This screw is integral to the assembly and maintenance of various truck components, ensuring secure and reliable fastening. Cummins is renowned for its high-quality parts and innovative solutions, making the 206511 Twelve Point Cap Screw a trusted component in the industry ¹.

Basic Concepts

A Twelve Point Cap Screw is a type of fastener characterized by its twelve-sided head, which provides a larger contact area compared to traditional hex screws. This design allows for better torque application and reduced risk of cam-out during tightening. Within a truck’s mechanical system, the Twelve Point Cap Screw functions by securely fastening components together, ensuring structural integrity and operational efficiency ².

Purpose and Role in Truck Operation

The 206511 Twelve Point Cap Screw plays a significant role in the operation and maintenance of commercial trucks. It is used in various applications, including engine components, transmission systems, and chassis assemblies. By providing a secure and durable fastening solution, this screw helps maintain the structural integrity of critical truck parts, ensuring reliable performance and longevity ³.

Key Features

The 206511 Twelve Point Cap Screw features a twelve-point design, which offers several advantages over traditional hex screws. This design allows for more precise torque application and reduces the likelihood of stripping or cam-out. The screw is typically made from high-strength materials, such as alloy steel, to enhance its durability and resistance to wear. Additionally, the screw may include features like a corrosion-resistant coating to improve its performance in harsh environments.

Benefits

The 206511 Twelve Point Cap Screw offers several benefits that contribute to its effectiveness in commercial truck applications. Its twelve-point design allows for improved torque application, ensuring a secure and lasting fit. The screw’s resistance to stripping enhances its reliability, reducing the need for frequent replacements. Furthermore, the enhanced security provided by the twelve-point head helps prevent loosening, which is crucial for maintaining the integrity of truck components.

Installation and Usage Guidelines

Proper installation of the 206511 Twelve Point Cap Screw is essential for ensuring a secure and lasting fit. Begin by cleaning the mating surfaces to remove any debris or contaminants. Use a torque wrench to apply the recommended torque specifications, which can be found in the manufacturer’s guidelines. It is important to follow the specified torque values to avoid over-tightening or under-tightening, both of which can compromise the screw’s effectiveness. Additionally, ensure that the screw is installed in the correct orientation to maximize its performance.

Troubleshooting and Maintenance

Common issues associated with Twelve Point Cap Screws include loosening, corrosion, and wear. To address these issues, regularly inspect the screws for signs of damage or wear. If a screw appears loose, re-tighten it to the specified torque value. In cases of corrosion, clean the affected area and apply a corrosion-resistant coating to prevent further degradation. Routine maintenance and inspection can help prolong the lifespan and effectiveness of the screw.

Safety Considerations

When working with the 206511 Twelve Point Cap Screw, it is important to observe several safety guidelines. Always wear appropriate personal protective equipment, such as gloves and safety glasses, to protect against injury. Use the correct tools, such as a torque wrench, to ensure accurate torque application. Additionally, follow all manufacturer guidelines and recommendations for handling, installation, and maintenance to ensure a safe and effective working environment.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. Founded in 1919, Cummins has a long-standing reputation for innovation and quality in the commercial truck industry. The company offers a wide range of products and services, including engines, powertrains, and aftermarket parts, all designed to meet the demanding needs of commercial truck operators. Cummins’ commitment to excellence and customer satisfaction has established it as a trusted name in the industry.

Twelve Point Cap Screw 206511 in Cummins Engines

The Twelve Point Cap Screw 206511, manufactured by Cummins, plays a critical role in the assembly and operation of several Cummins engine models. This part is integral to ensuring the structural integrity and operational efficiency of the engines.

K38 and K50 Engines

In the K38 and K50 engines, the Twelve Point Cap Screw 206511 is used in various applications, providing secure fastening for components that require high strength and precision. These engines benefit from the robust nature of the screw, which helps maintain the alignment and stability of critical parts under operational stress.

QSK38 CM2150 MCRS and QSK38 CM850 MCRS

For the QSK38 CM2150 MCRS and QSK38 CM850 MCRS engines, the Twelve Point Cap Screw 206511 is employed in several key areas. These engines, known for their reliability and performance, utilize the screw to secure components that are subject to significant mechanical forces. The screw’s design ensures that these parts remain tightly fastened, contributing to the overall durability and longevity of the engine.

QSK50 CM2150 K107 and QSK50 CM2150 MCRS

In the QSK50 CM2150 K107 and QSK50 CM2150 MCRS engines, the Twelve Point Cap Screw 206511 is used in various configurations to fasten and secure components. These engines are designed for heavy-duty applications, and the screw’s ability to withstand high loads and provide a strong, reliable connection is crucial. The screw’s twelve-point design allows for easier and more efficient tightening, which is essential in these demanding environments.

QSK50 CM2350 K108

The QSK50 CM2350 K108 engine also incorporates the Twelve Point Cap Screw 206511 in its construction. This engine, like its counterparts, relies on the screw to maintain the structural integrity of various components. The screw’s high strength and precision ensure that parts remain securely fastened, even under the most rigorous conditions.

The consistent use of the Twelve Point Cap Screw 206511 across these Cummins engines highlights its importance in maintaining the performance and reliability of the engines. The screw’s design and material properties make it an ideal choice for securing components in these high-performance engines.

Role of Part 206511 Twelve Point Cap Screw in Engine Systems

In the intricate assembly of engine systems, the part 206511 Twelve Point Cap Screw serves as a fundamental fastening element, ensuring the secure attachment and alignment of various components. This screw is integral in the following applications:

• Bracket Fan Mounting: The Twelve Point Cap Screw is utilized to firmly attach the fan bracket to the engine frame. This securement is essential for maintaining the fan’s position and operational stability during engine operation.

• Fan Drive Arrangement: Within the fan drive system, this screw plays a role in connecting the drive components to the fan, ensuring smooth and efficient power transmission from the engine to the fan.

• Heat Exchanger: The screw is employed in the assembly of the heat exchanger, where it helps in securing the various plates and components that facilitate heat exchange between the engine’s cooling system and the ambient air.

• Heat Exchanger Mounting: It is also used in the mounting of the heat exchanger to the engine, providing a stable and vibration-resistant connection that is vital for the exchanger’s efficiency and durability.

• Rear Engine Support: In the rear support structure of the engine, the Twelve Point Cap Screw contributes to the overall stability and integrity of the engine’s framework, ensuring that all components remain securely in place under operational stress.

The application of the part 206511 Twelve Point Cap Screw across these components underscores its importance in maintaining the structural integrity and functional reliability of engine systems. Its role in securing and aligning critical parts ensures that the engine operates efficiently and withstands the rigors of continuous use.

Conclusion

The 206511 Twelve Point Cap Screw is a vital component in the assembly and maintenance of commercial truck engines, particularly those manufactured by Cummins. Its unique design, high-strength materials, and corrosion-resistant features make it an ideal fastening solution for various engine components. Proper installation, regular maintenance, and adherence to safety guidelines are essential for maximizing the performance and longevity of this Cummins part.