4012919
Socket Head Cap Screw
Cummins®

Introduction

The Socket Head Cap Screw 4012919, produced by Cummins, is a specialized fastener designed for use in various applications within commercial trucks. This screw contributes to the secure assembly of components and the overall integrity of the vehicle’s structure.

Basic Concepts of Socket Head Cap Screws

Socket Head Cap Screws feature a hexagonal socket in the head, allowing for efficient tightening and loosening with a compatible tool. They are used in mechanical assemblies for their strength, precision fit, and ability to distribute load evenly across the joint. These screws convert torque into clamping force, securely holding components together ¹.

Purpose of Socket Head Cap Screw 4012919 in Truck Operation

This Cummins part is utilized in applications requiring high strength and resistance to loosening. It secures critical components, ensuring they remain firmly in place under various operating conditions, thereby contributing to the truck’s reliability and performance ².

Key Features

The Socket Head Cap Screw 4012919 is made from high-strength materials, ensuring durability under stress. Its design includes a precise thread pitch and a hexagonal socket head for efficient and secure fastening. It may also feature a unique coating or treatment to improve resistance to corrosion and wear, extending its service life in demanding environments ³.

Benefits

Using this part offers several benefits, including high strength, durable construction, and easy installation and removal. Its resistance to loosening ensures that components remain securely fastened, even under vibration and dynamic loads, enhancing the safety and reliability of the truck.

Installation and Usage

Proper installation of the Socket Head Cap Screw 4012919 is crucial for optimal performance and longevity. It should be installed using the correct torque specifications to ensure the proper clamping force is achieved without over-tightening. Using the appropriate tool for the hexagonal socket ensures that the screw is tightened evenly, preventing cross-threading and damage to the screw head.

Troubleshooting and Maintenance

Common issues with Socket Head Cap Screws include loosening over time due to vibration or dynamic loads, and corrosion in exposed applications. Regular inspection and maintenance can help identify and address these issues before they lead to component failure. Tightening screws to the manufacturer’s torque specifications during routine maintenance can prevent loosening, while applying a corrosion-resistant coating can protect against environmental damage.

Compatibility and Applications

The Socket Head Cap Screw 4012919 is designed for use in specific applications within commercial truck systems. Its compatibility with other components is ensured through precise manufacturing tolerances and material selection. This screw is commonly used in engine assemblies, chassis components, and other critical areas where secure fastening is required.

Safety Considerations

When handling and installing the Socket Head Cap Screw 4012919, it is important to follow safety guidelines to prevent accidents and ensure compliance with industry standards. This includes using the correct tools and torque specifications, wearing appropriate personal protective equipment, and ensuring that the work area is free from hazards. Adhering to these safety practices helps protect both the installer and the integrity of the truck’s components.

Cummins: A Brief 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 has established a reputation for quality, reliability, and innovation in the commercial truck industry. The company’s product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of commercial transportation.

Socket Head Cap Screw (Part 4012919) in Cummins Engines

The Socket Head Cap Screw, identified by the part number 4012919, is a critical component in the assembly and maintenance of Cummins engines. This part is specifically designed to provide a secure fastening solution in various engine configurations.

Application in Cummins Engines

QSV81G and QSV91G Engines

The Socket Head Cap Screw (4012919) is integral to the assembly of both the QSV81G and QSV91G engines. These engines utilize this screw in several key areas to ensure structural integrity and operational efficiency.

• Cylinder Head Attachment: The screw is often used to secure the cylinder head to the engine block, ensuring a tight seal that is crucial for maintaining combustion efficiency and preventing leaks.

• Turbocharger Mounting: In turbocharged engines, this screw is employed to mount the turbocharger to its housing, which is vital for maintaining the precise alignment and connection necessary for optimal turbocharger performance.

• Accessory Drive Components: The Socket Head Cap Screw is also used to fasten various accessory drive components, such as pulleys and brackets, ensuring they remain securely in place under the high rotational forces encountered during engine operation.

The use of the Socket Head Cap Screw in these engines highlights its importance in maintaining the structural and operational integrity of Cummins engines. The design and material of the screw ensure it can withstand the high stresses and temperatures typical in engine environments, contributing to the overall reliability and longevity of the engine.

Role of Part 4012919 Socket Head Cap Screw in Engine Systems

The 4012919 Socket Head Cap Screw is an integral component in various engine systems, ensuring the secure assembly and operation of several key parts.

In the Air Assembly Cleaner, this screw plays a role in fastening components that ensure the air entering the engine is clean and free from contaminants, which is essential for optimal engine performance.

Within the Air Fuel Assembly Mixer and Assembly Mixer Air Fuel, the 4012919 screw is used to secure parts that mix air and fuel in the correct proportions. This precise mixture is vital for efficient combustion and overall engine efficiency.

For the Cleaner, Air component, the screw helps in maintaining the structural integrity of the cleaner unit, ensuring that it functions correctly to remove impurities from the air before it reaches the engine.

In the Gas Module P=1, 25bar and Gas Module P=1, 8bar, the 4012919 screw is employed to fasten components that regulate gas pressure. Accurate pressure regulation is necessary for the safe and efficient operation of the gas system within the engine.

The Module, Fuel Control utilizes this screw to secure elements that control the fuel supply to the engine. Proper fuel control is essential for maintaining engine performance and fuel efficiency.

In the Module Gas and Module P=3bar Gas, the screw ensures that gas modules are securely assembled. This is important for the consistent delivery of gas to the engine, which is crucial for stable engine operation.

Overall, the 4012919 Socket Head Cap Screw is a fundamental component in these engine systems, contributing to the secure and efficient operation of various assemblies and modules.

Conclusion

The Socket Head Cap Screw 4012919 by Cummins is a critical component in the assembly and maintenance of commercial trucks and Cummins engines. Its high strength, durable construction, and resistance to loosening ensure the secure fastening of critical components, contributing to the reliability and performance of the vehicle. Proper installation, regular maintenance, and adherence to safety guidelines are essential for maximizing the benefits of this part.