3076055
Twelve Point Cap Screw
Cummins®

The Twelve-Point Cap Screw, identified by part number 3076055, is a component manufactured by Cummins, a well-established name in the automotive industry. This screw plays a significant role in the assembly and maintenance of heavy-duty trucks, ensuring the secure fastening of various components. Cummins is renowned for its commitment to quality and innovation, making this Twelve-Point Cap Screw a reliable choice for demanding applications ¹.

Basic Concepts

A Twelve-Point Cap Screw is a type of fastener characterized by its hexagonal-shaped head with twelve points, providing a larger contact area compared to traditional six-point screws. This design allows for more torque to be applied without rounding off the head, which is particularly beneficial in high-stress environments ². In the automotive industry, these screws are commonly used to secure engine components, chassis parts, and other critical assemblies where durability and resistance to loosening are paramount.

Purpose and Role in Truck Operation

This part serves a specific purpose in heavy-duty trucks by securing components that are subject to significant stress and vibration. Its role is to maintain the structural integrity of the truck by ensuring that critical parts remain firmly in place. This is especially important in applications where the failure of a fastener could lead to severe consequences, such as engine damage or compromised vehicle safety.

Key Features

This Cummins part is designed with several key features that enhance its performance and durability. Its twelve-point head design allows for greater torque application and reduced risk of cam-out, making it suitable for high-stress applications. The screw is typically made from high-strength materials, such as alloy steel, which provides excellent resistance to corrosion and wear. Additionally, the screw may feature a coated surface to further protect against environmental factors and improve longevity ³.

Benefits

The advantages offered by the 3076055 include improved fastening strength, enhanced resistance to loosening, and increased longevity in demanding environments. The larger contact area provided by the twelve-point design allows for more torque to be applied, resulting in a more secure fastening. The material composition and potential coatings contribute to the screw’s durability, making it a reliable choice for heavy-duty applications.

Installation Guidelines

Proper installation of this part is crucial to ensure optimal performance and safety. Begin by cleaning the mating surfaces to remove any debris or contaminants. Use a torque wrench to apply the specified torque, ensuring that the screw is tightened to the manufacturer’s recommendations. It is important to avoid over-tightening, as this can lead to damage or failure of the screw or the components being fastened. Follow best practices for thread engagement and consider using a thread locker if recommended by the manufacturer to prevent loosening over time.

Troubleshooting and Maintenance

Common issues associated with Twelve-Point Cap Screws include loosening due to vibration, corrosion, and wear. To troubleshoot these issues, inspect the screw and mating surfaces for signs of damage or corrosion. If loosening is detected, re-tighten the screw to the specified torque and consider applying a thread locker. Regular maintenance practices, such as cleaning and inspecting the screws, can help prolong their lifespan and ensure reliable operation. In cases of severe corrosion or damage, replacement of the screw may be necessary to maintain safety and performance.

Cummins Overview

Cummins 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 quality, innovation, and reliability in the automotive industry. The company offers a wide range of products, including engines, powertrains, and components, serving various markets such as heavy-duty trucks, construction equipment, and industrial applications. Cummins’ commitment to quality is evident in its rigorous testing and manufacturing processes, ensuring that its products meet the highest standards of performance and durability.

Twelve-Point Cap Screw 3076055 in Cummins Engines

The Twelve-Point Cap Screw 3076055 is a critical component in various Cummins engine models, ensuring structural integrity and proper assembly. This part is integral to the assembly of several engine variants, providing a reliable fastening solution.

ISM CM570 and ISM CM570/870

In the ISM CM570 and ISM CM570/870 engines, the Twelve-Point Cap Screw 3076055 is used in multiple applications. Its design allows for precise and secure fastening, which is crucial for maintaining the alignment and stability of engine components under high operational stresses.

ISM CM876 and ISM11 CM876 SN

For the ISM CM876 and ISM11 CM876 SN engines, the cap screw is employed in various critical assemblies. Its twelve-point design ensures a better grip and reduces the likelihood of rounding, which is essential for maintaining the integrity of engine mounts and other structural components.

M11 CELECT and M11 CELECT PLUS

In the M11 CELECT and M11 CELECT PLUS engines, the Twelve-Point Cap Screw 3076055 is utilized in several key areas. Its robust construction and precise threading are vital for the secure attachment of components that experience significant mechanical forces during operation.

QSM11 CM570

The QSM11 CM570 engine also benefits from the use of the Twelve-Point Cap Screw 3076055. This part’s design ensures that critical engine components are fastened securely, contributing to the overall reliability and performance of the engine.

The consistent use of the Twelve-Point Cap Screw 3076055 across these Cummins engine models underscores its importance in maintaining the structural integrity and operational efficiency of the engines.

Role of Part 3076055 Twelve-Point Cap Screw in Engine Systems

The part 3076055 Twelve-Point Cap Screw is instrumental in securing various components within engine systems, ensuring stability and reliable performance.

Engine Brake Systems

In engine brake systems, the Twelve-Point Cap Screw is utilized to fasten components that are subject to significant stress and vibration. Its design allows for a secure fit, which is essential for maintaining the integrity of the engine brake mechanism. This screw is often found in the assembly of the engine brake 411 D 12 / 24 V kit, where it helps in attaching critical parts that contribute to the efficient operation of the braking system.

Engine Brake 411 E Kit

Within the engine brake 411 E kit, the Twelve-Point Cap Screw plays a role in securing the mounting brackets and other structural elements. This ensures that the components remain firmly in place, even under the high loads and dynamic conditions experienced during engine braking. The screw’s robust design is particularly beneficial in this application, providing the necessary strength and reliability.

General Engine Brake Kits

Across various engine brake kits, the Twelve-Point Cap Screw is a common fastener for attaching components such as actuators, brackets, and housings. Its twelve-point design offers enhanced resistance to cam-out, which is vital in high-torque applications typical of engine brake systems. This feature ensures that the screw remains tight and does not loosen over time, contributing to the overall durability of the engine brake assembly.

Rocker Lever Assemblies

In rocker lever assemblies, the Twelve-Point Cap Screw is used to secure the lever to its pivot point. This application demands precision and reliability, as the rocker lever is a key component in translating the motion of the engine brake actuator into the desired braking effect. The screw’s ability to provide a strong, consistent hold is essential for the accurate functioning of the rocker lever mechanism.

Conclusion

The 3076055 Twelve-Point Cap Screw is a vital component in the assembly and maintenance of heavy-duty trucks and Cummins engines. Its unique design, robust construction, and reliable performance make it an essential fastener for securing critical components under high-stress conditions. Proper installation, regular maintenance, and timely replacement are key to ensuring the longevity and safety of the vehicle.