3074630
Twelve Point Cap Screw
Cummins®

The 3074630 Twelve Point Cap Screw by Cummins is a specialized fastener designed for heavy-duty truck maintenance. Cummins, a renowned manufacturer in the automotive industry, produces this component to ensure the structural integrity and functionality of truck components. This screw plays a significant role in various truck systems, contributing to the overall performance and reliability of heavy-duty vehicles.

Basic Concepts of Twelve Point Cap Screws

A Twelve Point Cap Screw is a type of fastener characterized by its twelve-sided head, which offers several advantages over traditional hex cap screws. The twelve-point design reduces the likelihood of cam-out, where the fastener rounds off during tightening, and provides a more secure grip. This design allows for more precise torque application and reduces the risk of damage to the screw head. Cap screws are threaded fasteners used to secure components together, often with the aid of a nut or directly into a tapped hole ¹.

Purpose and Role in Truck Operation

This Cummins part is integral to the operation and maintenance of heavy-duty trucks. It is utilized in various critical areas, including engine assemblies and transmission systems. By providing a secure and reliable fastening solution, this screw helps maintain the structural integrity of these components, ensuring they function correctly under demanding conditions. Its application in these systems is vital for the overall performance and longevity of the truck ².

Key Features

This part boasts several key features that enhance its performance and durability. It is made from high-strength materials, ensuring it can withstand the rigors of heavy-duty applications. The screw has a specific thread pitch designed for optimal engagement and load distribution. Additionally, it may feature special coatings or treatments to improve corrosion resistance and reduce friction, further enhancing its reliability in harsh operating environments ³.

Benefits

Using the 3074630 Twelve Point Cap Screw offers several benefits. Its design allows for improved torque application, reducing the risk of over-tightening or under-tightening. The twelve-point head provides greater resistance to loosening compared to standard hex cap screws, ensuring a more secure fastening solution. Additionally, the screw’s durability and resistance to corrosion make it suitable for long-term use in demanding conditions ⁴.

Installation Guidelines

Proper installation of the 3074630 Twelve Point Cap Screw is crucial for ensuring a secure and lasting fastening solution. Follow these guidelines for optimal results:

1. Use the appropriate torque specifications provided by the manufacturer to avoid over-tightening or under-tightening.
2. Employ recommended tools, such as a torque wrench, to achieve precise torque application.
3. Ensure the mating surfaces are clean and free of debris to promote proper engagement.
4. Follow best practices for tightening, such as using a crisscross pattern for multi-fastener applications, to ensure even load distribution.

Troubleshooting and Maintenance

Common issues associated with Twelve Point Cap Screws include loosening, corrosion, and damage to the screw head. Regular inspection can help identify these problems early. Maintenance tips to prolong the life of the fastener include:

• Inspecting the screw periodically for signs of wear or corrosion.
• Tightening the screw to the specified torque if loosening is detected.
• Applying a corrosion-resistant coating if necessary to protect against environmental factors.
• Replacing the screw if significant damage or wear is observed to prevent failure.

Cummins: Manufacturer Overview

Cummins Inc. is a leading manufacturer in the diesel engine industry, with a rich history of innovation and quality. Founded in 1919, Cummins has established itself as a trusted name in the automotive sector, known for its commitment to producing reliable and high-performance engines and components. The company’s expertise in diesel technology and its dedication to quality ensure that products like the 3074630 Twelve Point Cap Screw meet the demanding requirements of heavy-duty applications.

Twelve Point Cap Screw in Cummins Engines

The Twelve Point Cap Screw part number 3074630, manufactured by Cummins, plays a crucial role in the assembly and maintenance of various Cummins engines. This screw is integral to the structural integrity and operational efficiency of the engines, ensuring that components are securely fastened and aligned.

QSK19 CM850

In the QSK19 CM850 engine, the Twelve Point Cap Screw is utilized in several key areas. It is often found in the engine block, where it helps to secure the cylinder head to the engine block, ensuring a tight seal and preventing leaks. Additionally, this screw is used in the mounting of various engine components, such as the turbocharger and exhaust manifold, which are critical for maintaining the engine’s performance and reliability.

MCRS, V903

For the MCRS and V903 engines, the Twelve Point Cap Screw is similarly essential. In these engines, the screw is often used in the transmission and drivetrain components, where it helps to secure the transmission housing and other related parts. This ensures that the drivetrain operates smoothly and efficiently, with minimal wear and tear.

The use of the Twelve Point Cap Screw in these engines highlights Cummins’ commitment to quality and durability. By employing such a reliable fastener, Cummins ensures that the engines can withstand the rigors of heavy-duty applications while maintaining optimal performance.

Role of Part 3074630 Twelve Point Cap Screw in Engine Systems

In the intricate assembly of engine systems, the part 3074630 Twelve Point Cap Screw serves as a fundamental fastening element. Its application spans across various components, ensuring secure and reliable connections.

Motor and Starting Components

The Twelve Point Cap Screw is extensively used in the motor and starting components of an engine. In the starting motor, it fastens critical parts together, maintaining the structural integrity necessary for the motor’s operation. Similarly, in the starter motor wet applications, this screw ensures that components remain securely attached, even in environments where moisture or other fluids are present.

Mounting and Starter Motor Applications

In mounting applications, the Twelve Point Cap Screw plays a significant role. It is employed in the starter mounting process, where it secures the starter motor to the engine block. This connection is vital for the proper alignment and function of the starter motor. Additionally, in starting mounting motor setups, the screw ensures that the starting mechanism is firmly attached, allowing for efficient and reliable engine starts.

Starter and Starter Motor Integration

The integration of the starter with the engine system also benefits from the use of the Twelve Point Cap Screw. It is used to fasten the starter to various engine components, ensuring a stable and secure connection. In the starter motor assembly, this screw is crucial for attaching the motor to its housing and other related parts, contributing to the overall durability and performance of the starter motor.

Conclusion

In summary, the 3074630 Twelve Point Cap Screw is a key component in the fastening and secure attachment of various engine system parts, playing a significant role in the reliable operation of motor and starting components. Its design, durability, and application in critical engine areas underscore its importance in maintaining the performance and longevity of heavy-duty trucks.