3081566
Twelve Point Cap Screw
Cummins®

Introduction

The Twelve Point Cap Screw, specifically Part #3081566 by Cummins, is a specialized fastener designed for heavy-duty truck applications. Cummins, a renowned manufacturer in the heavy-duty truck and engine industry, produces this component to meet the demanding requirements of truck operations. This screw plays a significant role in ensuring the structural integrity and operational efficiency of heavy-duty trucks ¹.

Basic Concepts of Twelve Point Cap Screws

A Twelve Point Cap Screw is a type of fastener characterized by its hexagonal socket head, which allows for increased torque application compared to traditional hex-head screws. This design reduces the likelihood of cam-out, where the driver slips out of the fastener head, and provides a more secure fit. In the automotive industry, these screws are commonly used in applications requiring high strength and resistance to loosening, such as in engine components, chassis assemblies, and other critical areas ².

Purpose of the 3081566 Twelve Point Cap Screw in Truck Operations

The 3081566 Twelve Point Cap Screw by Cummins is utilized in various applications within heavy-duty trucks. It plays a role in securing components that are subject to significant stress and vibration, such as engine mounts, transmission housings, and frame assemblies. Its design ensures a tight and reliable connection, contributing to the overall durability and performance of the truck ³.

Key Features

The 3081566 Twelve Point Cap Screw features a robust design with a twelve-point socket head that enhances torque application and reduces the risk of stripping. It is manufactured from high-strength materials, typically alloy steel, which provides excellent resistance to wear and corrosion. The screw’s threaded design ensures a secure fit, while its finish may include coatings or treatments to further enhance durability and protect against environmental factors ⁴.

Benefits of Using the 3081566 Twelve Point Cap Screw

Utilizing the 3081566 Twelve Point Cap Screw offers several advantages. Its design allows for improved torque application, ensuring that components are securely fastened. The screw’s resistance to loosening is particularly beneficial in applications subject to vibration and dynamic loads. Additionally, its durability in harsh operating conditions contributes to the longevity of the fastener, reducing the need for frequent replacements and maintenance ⁵.

Installation Guidelines

Proper installation of the 3081566 Twelve Point Cap Screw is crucial for optimal performance and safety. Begin by ensuring the mating surfaces are clean and free of debris. Use a torque wrench to apply the specified torque, which should be referenced from the manufacturer’s guidelines to avoid over-tightening or under-tightening. It is also recommended to use a thread lubricant to facilitate installation and prevent galling. Follow best practices for tightening sequences to ensure even distribution of load across the fastener ⁶.

Troubleshooting and Maintenance

Common issues with Twelve Point Cap Screws include loosening due to vibration, corrosion, and wear. Regular inspection and maintenance can help identify and address these issues early. If corrosion is detected, cleaning the affected area and applying a corrosion-resistant coating may be necessary. In cases of wear or damage, replacement of the screw is recommended to maintain the integrity of the assembly ⁷.

Safety Considerations

When working with the 3081566 Twelve Point Cap Screw, it is important to observe safety practices and precautions. Use personal protective equipment (PPE) such as gloves and safety glasses to protect against injury. Ensure that tools and equipment are in good condition and used according to manufacturer recommendations. Follow safe handling procedures to prevent accidents and ensure a secure working environment ⁸.

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 has established a reputation for innovation, quality, and reliability in the heavy-duty truck and engine manufacturing industry. The company’s product range includes engines, powertrain components, and aftermarket parts, all designed to meet the rigorous demands of commercial and industrial applications ⁹.

Twelve Point Cap Screw 3081566 in Cummins Engines

The Twelve Point Cap Screw 3081566, manufactured by Cummins, is a critical component in various Cummins engines. This screw is integral to the assembly and maintenance of these engines, ensuring structural integrity and operational efficiency.

QSK19 Series

In the QSK19 series, which includes the QSK19 CM500 and QSK19G engines, the 3081566 screw is used in several key areas. It is employed in the engine’s mounting system, securing various components to the engine block. This ensures that the engine remains stable and properly aligned during operation.

QSK45 and QSK60 Series

For the QSK45 CM500 and QSK60 CM500 engines, the 3081566 screw is utilized in both the engine block and the cylinder head assembly. Its role here is crucial for maintaining the structural integrity of these components, which are subjected to high stress and temperature during operation.

The QSK60 CM850 MCRS engine also relies on the 3081566 screw. It is used in the engine’s exhaust system, where it helps to secure the exhaust manifold and other related components. This ensures that the exhaust system remains intact under the high pressures and temperatures of engine operation.

QSK60 G Series

In the QSK60 G series, which includes the QSK60 G CM2358 K110 and QSK60G engines, the 3081566 screw is used in the engine’s fuel injection system. It is employed to secure various components of the fuel injection system, ensuring that the system operates efficiently and reliably.

The 3081566 screw’s twelve-point design provides a better grip and more surface area for torque application, making it ideal for the demanding environments within these engines. Its use across various Cummins engines highlights its versatility and importance in maintaining the structural and operational integrity of these powerful machines ¹⁰.

Role of Part 3081566 Twelve Point Cap Screw in Engine Systems

The part 3081566 Twelve Point Cap Screw is integral to the secure assembly and operation of various engine components. Its application ensures the stability and precise functioning of the following components:

• Rocker Lever: This component relies on the Twelve Point Cap Screw to maintain its position and alignment. The screw’s design allows for efficient torque application, ensuring the rocker lever operates smoothly without undue stress or movement.

• Rocker Lever Assembly: Within the rocker lever assembly, the Twelve Point Cap Screw plays a key role in holding multiple parts together. Its use ensures that the assembly remains intact under the dynamic conditions of engine operation, contributing to consistent valve actuation.

• Rocker Lever Kit: As part of the rocker lever kit, the Twelve Point Cap Screw facilitates the secure attachment of individual components. This is essential for the kit’s overall performance, as it ensures that all parts work in unison without the risk of detachment or misalignment.

• Rocker Lever Top Level Assembly Shaft: The shaft within the top-level assembly of the rocker lever benefits from the precise fastening provided by the Twelve Point Cap Screw. This ensures that the shaft remains firmly in place, allowing for accurate and reliable transmission of motion to the valves.

• Rocker Top Level Assembly Lever: Finally, in the rocker top-level assembly lever, the Twelve Point Cap Screw is used to secure the lever to its mounting points. This is vital for maintaining the lever’s position and ensuring it can effectively transfer motion from the camshaft to the valves, contributing to the engine’s overall efficiency and performance ¹¹.

Conclusion

The 3081566 Twelve Point Cap Screw by Cummins is a critical component in the assembly and maintenance of heavy-duty trucks and engines. Its robust design, high-strength materials, and resistance to wear and corrosion make it an ideal choice for applications requiring secure fastening and durability. Proper installation, regular maintenance, and adherence to safety practices are essential to ensure the optimal performance and longevity of this part.

References