3930975
Hexagon Head Cap Screw
Cummins®

The Cummins Hexagon Head Cap Screw, part number 3930975, is a critical component in the maintenance and operation of commercial trucks. This screw ensures the secure assembly of various truck components, contributing to the vehicle’s reliability and performance.

Basic Concepts of Hexagon Head Cap Screws

Hexagon Head Cap Screws are fasteners with a hexagonal head, designed for efficient tightening and loosening using a wrench or socket. They convert torque into clamping force, securing components within mechanical systems. Typically made from steel, stainless steel, or alloy steel, these screws offer varying levels of strength, corrosion resistance, and durability ¹.

Purpose of the 3930975 Hexagon Head Cap Screw in Truck Operation

This Cummins part plays a specific role in commercial trucks by securing critical components and systems. It is commonly associated with engine components, chassis parts, and other assemblies requiring robust fastening to withstand heavy-duty use ².

Key Features of the 3930975 Hexagon Head Cap Screw

The 3930975 is distinguished by its thread pitch for a secure fit and its head design for easy installation and removal. It may also feature special coatings or treatments to enhance corrosion resistance and longevity ³.

Benefits of Using the 3930975 Hexagon Head Cap Screw

Utilizing this screw offers advantages such as improved performance due to secure fastening, enhanced durability from its material properties, and ease of use during installation and maintenance. It provides a reliable solution for heavy-duty applications compared to alternative fasteners.

Installation and Usage Guidelines

Proper installation of the 3930975 involves using the appropriate torque settings specified by the manufacturer to achieve the correct clamping force without over-tightening. Special considerations may include using thread lockers or anti-seize compounds to prevent loosening or corrosion.

Troubleshooting Common Issues

Typical problems with the 3930975 include loosening, corrosion, or damage. Regular inspection for signs of wear or failure and reapplying thread lockers or anti-seize compounds as needed can address these issues. In cases of significant corrosion or damage, replacement may be necessary.

Maintenance Tips

Regular maintenance of the 3930975 is crucial for ensuring its longevity and reliable performance. This includes periodic inspection intervals to check for signs of wear, corrosion, or loosening. Cleaning the screw and its surrounding area can help prevent the accumulation of debris that may lead to premature failure.

Cummins: A Brief Overview

Cummins Inc. is a leading manufacturer in the commercial truck industry, known for its wide range of products and commitment to quality and innovation. With a history of producing reliable and high-performance components, Cummins continues to be a trusted name in the industry, dedicated to advancing technology and meeting customer needs.

Cummins Hexagon Head Cap Screw 3930975 in Engine Applications

The Cummins Hexagon Head Cap Screw 3930975 is a critical component in the assembly and maintenance of various Cummins engines, including the 6B5.9. This screw provides a secure fastening solution, ensuring that engine components remain tightly secured under operational stresses.

Engine Compatibility

• 6B5.9 Engine: The 3930975 screw is utilized in the 6B5.9 engine to secure various engine parts, ensuring structural integrity and operational efficiency. Its design allows for easy installation and removal, which is crucial during routine maintenance and repairs.

Functional Importance

The hexagon head design of the screw facilitates easy torque application with standard wrenches or sockets, making it a practical choice for engine assembly and maintenance. The material composition of the screw is engineered to withstand the high temperatures and pressures typical in engine environments, ensuring durability and reliability.

Installation and Maintenance

Proper installation of the 3930975 screw is essential to prevent loosening under operational conditions. Technicians should follow the manufacturer’s torque specifications to ensure the screw is tightened to the correct tension, which is vital for maintaining engine performance and longevity.

Application in Engine Assembly

In the assembly of the 6B5.9 engine, the 3930975 screw is often used to fasten components such as engine blocks, cylinder heads, and other critical assemblies. Its robust design and precise manufacturing standards make it a preferred choice for securing engine parts that require high reliability and strength.

Role of Part 3930975 Hexagon Head Cap Screw in Engine Systems

Drive System Integration

In the drive system, the 3930975 Hexagon Head Cap Screw is utilized to secure various components essential for transmitting power from the engine to the wheels. This includes fastening the driveshaft to the differential, ensuring a stable and reliable connection. Additionally, it is employed in securing the mounting brackets for the drive system, which are pivotal for maintaining the alignment and integrity of the drive components. The screw’s robust design ensures that these connections remain firm under the dynamic loads and vibrations experienced during operation.

Fan Assembly Application

Within the fan assembly, the 3930975 Hexagon Head Cap Screw plays a significant role in maintaining the structural integrity and operational efficiency of the cooling system. It is used to attach the fan blades to the fan hub, ensuring that the blades are securely held in place as they rotate at high speeds. Furthermore, it fastens the fan assembly to the engine block or radiator, providing a stable foundation for the fan to operate effectively. This secure attachment is vital for the consistent airflow required to dissipate heat from the engine, contributing to the overall thermal management of the system.

Conclusion

The Cummins Hexagon Head Cap Screw 3930975 is a vital component in the maintenance and operation of commercial trucks and engines. Its design, material properties, and application in critical systems underscore its importance in ensuring the reliability and performance of heavy-duty vehicles. Regular maintenance and proper installation are essential to maximize the benefits of this screw in demanding applications.