3331596
Hexagon Flange Head Cap Screw
Cummins®

The Hexagonal Flange Head Cap Screw, identified by part number 3331596, is a specialized fastener produced by Cummins, a leading manufacturer in the commercial truck industry. This screw is integral to the assembly and maintenance of various components within commercial trucks, ensuring secure and reliable fastening solutions.

Basic Concepts

A Hexagonal Flange Head Cap Screw is a type of bolt characterized by its hexagonal head and a flange beneath the head. This design allows for efficient tightening and loosening using a wrench or socket, while the flange provides additional surface area to distribute the load and prevent the screw from sinking into the material. In the context of a truck’s mechanical system, these screws are used to fasten components that require high strength and resistance to vibration ¹.

Purpose and Role in Truck Operation

This Cummins part plays a significant role in the operation of commercial trucks by securely fastening critical components. Its application areas include engine mounts, transmission housings, and various chassis components. The screw’s design ensures that these components remain firmly in place, even under the dynamic loads and vibrations experienced during truck operation ².

Key Features

The 3331596 boasts several key features that enhance its performance and durability. Its hexagonal flange head design allows for easy and efficient tightening, reducing the risk of cross-threading and damage to the fastener. The screw is typically made from high-strength materials, such as alloy steel, which provides excellent resistance to corrosion and wear. Additionally, the flange beneath the head helps distribute the load more evenly, reducing the likelihood of the screw pulling through the material ³.

Benefits

The benefits of using the 3331596 include improved fastening security, resistance to vibration loosening, and enhanced load distribution. The screw’s design ensures a tight and secure fit, minimizing the risk of component failure due to loosening. Its resistance to corrosion and wear makes it suitable for use in harsh environments, while the flange helps to distribute loads more evenly, prolonging the service life of both the screw and the fastened components.

Installation and Usage Guidelines

Proper installation of the 3331596 is crucial for ensuring optimal performance and longevity. It is recommended to use a torque wrench to achieve the specified torque settings, which can be found in the manufacturer’s guidelines. This ensures that the screw is tightened to the correct tension, avoiding over-tightening, which can lead to stripping, or under-tightening, which can result in loosening. Additionally, it is important to clean the mating surfaces before installation to prevent corrosion and ensure a proper fit.

Troubleshooting and Maintenance

Common issues with the 3331596 include loosening and corrosion. Regular inspections should be conducted to check for signs of wear or damage. If loosening is detected, the screw should be re-tightened to the specified torque settings. In cases of corrosion, the affected area should be cleaned, and an appropriate corrosion-resistant coating should be applied. Regular maintenance and timely replacement of worn screws can help prolong the service life of the fastener and the components it secures.

Safety Considerations

When working with the 3331596, it is important to follow proper safety practices. This includes wearing appropriate personal protective equipment (PPE), such as gloves and safety glasses, to protect against injury. The screw should be handled and stored in a dry, clean environment to prevent corrosion. Additionally, proper disposal practices should be followed to ensure environmental safety, especially if the screw is made from materials that could be harmful if not disposed of correctly.

Cummins Overview

Cummins is a well-established manufacturer with a strong reputation in the commercial truck industry. Founded in 1919, Cummins has a long history of innovation and quality, offering a wide range of products including engines, transmissions, and aftermarket parts. The company is known for its commitment to reliability, performance, and customer satisfaction, making it a trusted name among commercial truck operators and maintenance professionals.

Hexagonal Flange Head Cap Screw 3331596 in Cummins Engines

The 3331596, manufactured by Cummins, is a critical component in various Cummins engine models. This screw is designed to secure different parts within the engine, ensuring structural integrity and operational efficiency. Here is how it fits into specific engine models:

G855 CM558 and GTA855 CM558 (CM2358) G101

In the G855 CM558 and GTA855 CM558 (CM2358) G101 engines, the 3331596 is used to fasten components that require a robust connection. These engines, known for their high power output, benefit from the screw’s ability to withstand significant stress and maintain a secure hold.

KTA19GC and KTA19GC CM558

For the KTA19GC and KTA19GC CM558 engines, the 3331596 is integral in securing various engine parts. Its design ensures that the screw can handle the operational demands of these engines, providing a reliable fastening solution.

QSK19 Series

In the QSK19 series engines, including QSK19 CM2350 K105, QSK19 CM2350 K114, QSK19 CM500, QSK19 CM850 MCRS, and QSK19G, the 3331596 is used to fasten critical components. These engines, which are known for their versatility and performance, rely on the screw to maintain the integrity of their assemblies.

QSK50 Series

The QSK50 series engines, such as QSK50 CM2150 K107, QSK50 CM2350 K108, and QSK95 CM2350 K111, also utilize the 3331596. This screw is essential in securing parts that are subject to high stress and require a dependable fastening solution.

The use of the 3331596 across these engines highlights its versatility and importance in maintaining the structural integrity and operational efficiency of Cummins engines.

Role of Part 3331596 in Engine Systems

The 3331596 is integral in securing various components within engine systems, ensuring stability and proper function. Here’s how it fits into the provided components:

Air Crossover Mounting and Arrangement

The screw is used to secure the air crossover mounting, ensuring that the air crossover arrangement remains stable. This stability is essential for maintaining the correct airflow between the engine’s cylinders, which is vital for balanced combustion and engine performance.

Crankcase Breather Arrangement

In the crankcase breather arrangement, the screw helps in securing the breather components. This ensures that the crankcase ventilation system functions correctly, allowing for the release of gases and preventing pressure build-up within the crankcase.

Fuel Governor Arrangement

For the fuel governor arrangement, the screw is employed to fasten the governor components. This secure attachment ensures that the fuel governor operates efficiently, regulating fuel flow to the engine and maintaining optimal performance.

Oil Pan Arrangement

The screw plays a role in the oil pan arrangement by securing the oil pan mounting. This ensures that the oil pan remains firmly in place, allowing for effective oil circulation and lubrication of engine components.

Turbocharger and Cleaner Air Connection

In the turbocharger and cleaner air connection, the screw is used to secure the connections. This ensures a tight and leak-free seal, which is essential for maintaining the turbocharger’s efficiency and the cleanliness of the air intake system.

Air Crossover and Air Intake Connection

For the air crossover and air intake connection, the screw secures these critical components. This ensures that the air intake system remains intact, providing a consistent airflow to the engine cylinders.

Electronic Control Module Kit and Wiring Harness

The screw is utilized in the electronic control module kit and the wiring harness arrangement. It secures the electronic control module and ensures that the wiring harness remains in place, which is vital for the proper functioning of the engine’s electronic systems.

Engine Lubricating Primer and Fuel Control Module

In the engine lubricating primer and fuel control module, the screw ensures that these components are securely mounted. This stability is important for the consistent operation of the lubricating system and the precise control of fuel delivery.

Governor (Electronic and Fuel)

For both the electronic and fuel governors, the screw secures the governor components. This ensures that the governors can accurately regulate engine functions, contributing to efficient engine operation.

Oil Pan Mounting and Plumbing

Finally, in the oil pan mounting and plumbing arrangement, the screw secures the oil pan and plumbing components. This ensures that the oil system remains intact, allowing for effective lubrication and cooling of engine parts.

Conclusion

The 3331596 Hexagonal Flange Head Cap Screw is a vital component in the assembly and maintenance of commercial trucks and Cummins engines. Its design, featuring a hexagonal head and flange, ensures efficient tightening, resistance to corrosion, and enhanced load distribution. Proper installation, regular maintenance, and adherence to safety practices are essential for maximizing the performance and longevity of this part. The screw’s role in securing critical components within engine systems underscores its importance in maintaining the structural integrity and operational efficiency of commercial trucks and engines.