205413
Twelve Point Cap Screw
Cummins®

The Twelve Point Cap Screw, Part #205413, is a specialized fastener produced by Cummins, a leading manufacturer in the commercial truck industry. This part is designed for use in commercial trucks, where it plays a role in securing various components and contributing to the overall structural integrity of the vehicle.

Basic Concepts of Twelve Point Cap Screws

A Twelve Point Cap Screw is a type of fastener that features a twelve-sided head, as opposed to the more common six-sided head found on standard cap screws. This design offers several advantages, including improved torque application and reduced risk of cam-out during tightening ¹. Twelve Point Cap Screws are commonly used in mechanical assemblies where precision and reliability are paramount.

Purpose and Role in Truck Operation

This Cummins part serves a specific purpose in the operation of commercial trucks. It is used to secure components that require a high degree of stability and resistance to vibration. By providing a secure fastening solution, this part contributes to the structural integrity of the truck, ensuring that critical components remain in place under various operating conditions.

Key Features

The Twelve Point Cap Screw Part #205413 boasts several key features that enhance its performance and durability. Its twelve-point design allows for more precise torque application and reduces the likelihood of the tool slipping off the screw head. The material composition of the screw is chosen for its strength and resistance to wear and corrosion, ensuring long-lasting performance in demanding environments ². Additionally, the threading specifications are designed to provide a secure grip, further contributing to the reliability of the fastening solution.

Benefits

The benefits of using the Twelve Point Cap Screw Part #205413 include improved torque application, which allows for more precise and controlled tightening. The reduced risk of cam-out enhances the efficiency of the installation process. The enhanced grip provided by the screw’s design ensures that components remain securely fastened, even under vibration and stress. Furthermore, the increased resistance to wear and corrosion prolongs the lifespan of the fastener, offering reliable performance over time ³.

Installation Considerations

Proper installation of the Twelve Point Cap Screw Part #205413 is crucial for ensuring secure and reliable fastening. It is important to adhere to the specified torque values to avoid over-tightening or under-tightening, both of which can compromise the integrity of the fastening. Recommended tools for installation include a torque wrench to ensure accurate torque application and a socket that matches the twelve-point design of the screw head. Following best practices, such as cleaning the mating surfaces and inspecting the screw for damage before installation, will contribute to a successful fastening solution.

Troubleshooting and Maintenance

Common issues related to Twelve Point Cap Screws may include loosening, corrosion, or damage. Regular inspection of the screws can help identify these issues early, allowing for timely maintenance or replacement. To prolong the lifespan of the fastener and ensure continued reliable performance, it is recommended to clean and lubricate the screw periodically, especially in environments where exposure to moisture or corrosive substances is likely.

Cummins 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 has established a strong reputation in the commercial truck industry for producing high-quality, reliable components. The company’s product offerings include a wide range of engines, powertrains, and aftermarket parts, all designed to meet the demanding requirements of commercial truck applications. Cummins’ commitment to innovation, quality, and customer satisfaction has made it a trusted name in the industry.

Twelve Point Cap Screw 205413 in Cummins Engines

This Cummins part is a critical component in various Cummins engine models. This screw is integral to the assembly and maintenance of these engines, ensuring proper alignment and secure fastening of components.

K19, K38, and K50 Engines

The Twelve Point Cap Screw 205413 is utilized in the K19, K38, and K50 engines. These engines are known for their robust design and reliability, often used in heavy-duty applications. The screw’s twelve-point design provides a better grip and reduces the likelihood of stripping, making it ideal for high-torque applications.

QSK38 Engines

In the QSK38 engines, the Twelve Point Cap Screw 205413 is used in both the QSK38 CM2150 MCRS and QSK38 CM850 MCRS models. These engines are designed for demanding industrial and marine applications, where durability and performance are paramount. The screw’s precision ensures that critical components remain securely fastened under varying operational conditions.

QSK50 Engines

For the QSK50 engines, the Twelve Point Cap Screw 205413 is employed in the QSK50 CM2150 K107, QSK50 CM2150 MCRS, QSK50 CM2350 K108, and QSK50 CM2350 MCRS models. These engines are engineered for high-performance and efficiency, often used in power generation and marine sectors. The screw’s high strength and precise fit are essential for maintaining the integrity of the engine’s components during operation.

The consistent use of the Twelve Point Cap Screw 205413 across these engines underscores its importance in ensuring the reliability and longevity of Cummins engines.

Role of Part 205413 Twelve Point Cap Screw in Engine Systems

This part is integral to the assembly and securement of various components within engine systems. Its application ensures stability, alignment, and efficient operation of the engine’s mechanical and auxiliary systems. Below are the specific areas where this cap screw is employed:

Actuator Mounting Bracket

The actuator mounting bracket relies on the Twelve Point Cap Screw to firmly attach the actuator to the engine frame. This securement is vital for the precise operation of the actuator, which controls various engine functions.

Air Cleaner and Air Compressor

In the air cleaner and air compressor systems, the Twelve Point Cap Screw is used to fasten components such as the compressor mounting and the arrangement of the oil fill. This ensures a tight seal and proper alignment, which is essential for efficient air filtration and compression.

Cam Follower Cover Mounting

The cam follower cover, which protects the camshaft and its followers, is mounted using the Twelve Point Cap Screw. This secure attachment prevents any misalignment that could lead to increased wear or failure of the cam followers.

Compressor and Air Systems

Within the compressor and air systems, the Twelve Point Cap Screw is utilized in the compressor mounting and the hand hole cover support mounting. This ensures that all components remain securely in place, maintaining the integrity of the compressed air system.

Hand Hole and Cover Mountings

The hand hole cover and its support mounting are critical for accessing internal engine components for maintenance or repair. The Twelve Point Cap Screw provides a robust connection, ensuring that the cover remains securely in place during operation.

Crankcase Explosion Valve and Dipstick Systems

The crankcase explosion valve, designed to release pressure in case of an explosion, is mounted using the Twelve Point Cap Screw. Similarly, the dipstick fill & breather and oil dipstick and fill systems rely on this cap screw for secure attachment, ensuring accurate oil level readings and proper ventilation.

Fuel Supply Plumbing

In the fuel supply plumbing, the Twelve Point Cap Screw is employed to secure connections and fittings. This is essential for maintaining the integrity of the fuel lines, preventing leaks, and ensuring a consistent fuel supply to the engine.

Turbocharger Mounting and Coolant Plumbing

The turbocharger mounting benefits from the use of the Twelve Point Cap Screw, ensuring that the turbocharger is firmly attached to the engine. Additionally, in the turbocharger coolant plumbing, this cap screw secures fittings and connections, maintaining the efficiency of the cooling system.

Oil Bayonet and Fill

The oil bayonet and fill system, which allows for easy and clean oil changes, utilizes the Twelve Point Cap Screw to ensure a secure and leak-free connection. This is vital for maintaining proper oil levels and preventing contamination.

Conclusion

In summary, the part 205413 Twelve Point Cap Screw plays a significant role in the securement and efficient operation of various engine components, contributing to the overall reliability and performance of the engine system.