3331581
Hexagon Flange Head Cap Screw
Cummins®

The Cummins Hexagon Flange Head Cap Screw (Part #3331581) is a specialized fastener designed for use in heavy-duty truck components. This part is significant due to its robust design and reliable performance, which contribute to the overall durability and efficiency of truck assemblies.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of bolt characterized by its hexagonal head and flanged base. The hexagonal head allows for easy tightening and loosening using a wrench or socket, while the flange provides additional surface area for distribution of clamping force. In the context of heavy-duty trucks, this screw operates by securing various components and assemblies, ensuring they remain firmly in place under significant stress and vibration.

Purpose and Role in Truck Operation

This Cummins part plays a specific role in heavy-duty trucks by securing critical components and assemblies. Its primary function is to maintain structural integrity and operational efficiency by providing a strong, stable connection between parts. This screw is often used in applications where high tensile strength and resistance to loosening are required, such as in engine mounts, frame assemblies, and other high-stress areas.

Key Features

The 3331581 features a hexagonal head design that facilitates easy installation and removal using standard tools. The flange at the base of the screw head enhances the distribution of clamping force, reducing the risk of component damage. Additionally, the screw is typically made from high-strength materials, such as alloy steel, which contribute to its durability and resistance to corrosion. These features collectively ensure reliable performance in demanding truck applications.

Benefits

This part offers several benefits, including enhanced fastening strength and resistance to loosening. Its design allows for secure attachment of components, even under dynamic loads and vibrations commonly experienced in heavy-duty trucks. Furthermore, the screw’s compatibility with various truck components ensures versatile application across different assemblies, contributing to improved truck performance and reliability.

Installation and Usage

Proper installation of the 3331581 is crucial for ensuring secure fastening. It is recommended to follow torque specifications provided by the manufacturer to achieve the optimal clamping force without over-tightening, which could lead to damage. Best practices include using the correct tools and ensuring that the screw and mating surfaces are clean and free of debris to prevent galling and ensure a proper fit.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibration and corrosion. Regular inspection for signs of wear, such as rust or deformation, is recommended to identify potential problems early. Maintenance practices, such as applying an anti-seize compound during installation and periodic re-torqueing, can help prolong the lifespan of the screw and ensure optimal performance. If signs of significant wear or damage are observed, replacement of the screw may be necessary to maintain safety and efficiency.

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 is renowned for its commitment to quality and innovation in the automotive and heavy-duty truck industry. The company’s extensive product offerings and reputation for reliability make it a trusted name among professionals in the field. Cummins’ dedication to manufacturing high-quality components, such as the 3331581, underscores its role as a leader in the industry.

Hexagon Flange Head Cap Screw (Part 3331581) in Cummins Engines

The Hexagon Flange Head Cap Screw, part number 3331581, manufactured by Cummins, is a critical component in the assembly and maintenance of several Cummins engine models. This part is designed to provide secure fastening in various engine applications, ensuring the integrity and functionality of the engine’s components.

QSK50 and CM2350 Engines

In the QSK50 and CM2350 engines, the Hexagon Flange Head Cap Screw is utilized in several key areas. These engines, known for their robust performance and reliability, often require precise and durable fastening solutions to maintain operational efficiency. The 3331581 part is typically employed in securing engine covers, housings, and other critical assemblies, ensuring that these components remain tightly fastened under the demanding conditions of engine operation.

K108 Engine

The K108 engine also benefits from the use of the Hexagon Flange Head Cap Screw. This engine, designed for heavy-duty applications, relies on the 3331581 part to secure various engine components, including but not limited to, the cylinder head, intake and exhaust manifolds, and other structural elements. The screw’s design allows for easy installation and removal, which is crucial during routine maintenance and repairs.

Common Applications

Across these engines, the Hexagon Flange Head Cap Screw is integral to maintaining the structural integrity of the engine. Its flange head design provides a larger bearing surface, which helps in distributing the load more evenly, reducing the risk of stripping or damaging the threads. This is particularly important in high-stress environments where the engine operates under significant load and vibration.

The use of the 3331581 part in these engines underscores Cummins’ commitment to quality and reliability. By employing such a well-engineered component, Cummins ensures that their engines can withstand the rigors of demanding applications while maintaining optimal performance and longevity.

Hexagon Flange Head Cap Screw (Part 3331581) in Engine Systems

The Hexagon Flange Head Cap Screw, identified by part number 3331581, is a vital fastening component in various engine systems. Its primary role is to securely attach and maintain the integrity of multiple engine components, ensuring they function as intended under operational conditions.

Crankcase Breather

In the crankcase breather system, the Hexagon Flange Head Cap Screw is utilized to fasten the breather housing to the crankcase. This connection is essential for managing pressure within the crankcase by allowing gases to escape, which prevents the buildup of harmful contaminants and maintains optimal engine performance. The screw’s flange head design provides additional surface area for a more secure fit, reducing the risk of loosening due to engine vibrations.

By effectively securing the crankcase breather, the Hexagon Flange Head Cap Screw contributes to the overall reliability and efficiency of the engine, ensuring that the breather system operates within specified parameters. This, in turn, helps in prolonging the lifespan of the engine by maintaining a clean and pressurized crankcase environment.

Conclusion

The Cummins Hexagon Flange Head Cap Screw (Part #3331581) is a critical component in the automotive and heavy-duty truck industry, providing reliable fastening solutions for various engine and truck components. Its robust design, ease of installation, and resistance to loosening make it an essential part for maintaining the structural integrity and operational efficiency of heavy-duty engines and trucks. Proper installation, regular maintenance, and timely replacement are key to ensuring the longevity and performance of this part in demanding applications.