3967867
Socket Head Cap Screw
Cummins®

The Socket Head Cap Screw 3967867, manufactured by Cummins, is a specialized fastener designed for use in commercial truck applications. Cummins, a well-established name in the commercial truck industry, produces this screw to meet the demanding requirements of truck mechanics and maintenance. This screw is integral to ensuring the reliability and efficiency of truck operations.

Basic Concepts of Socket Head Cap Screws

Socket Head Cap Screws are a type of fastener characterized by a hexagonal socket in the head, allowing for easy installation and removal using a hex key. These screws are commonly used in mechanical and automotive applications due to their strength, precision fit, and resistance to loosening. They function by providing a secure and durable connection between components, ensuring that parts remain firmly in place under various operating conditions ¹.

Purpose of the 3967867 Socket Head Cap Screw in Truck Operations

This Cummins part plays a specific role in the operation and maintenance of commercial trucks. It is utilized in areas where secure fastening is required, such as in engine components, chassis assemblies, and other critical truck mechanics applications. This screw helps maintain the integrity of truck parts, ensuring they withstand the rigors of heavy-duty use ².

Key Features

The 3967867 Socket Head Cap Screw boasts several key features that enhance its performance and durability. It is composed of high-strength materials, ensuring it can withstand significant stress and load. The design includes a precise hexagonal socket for easy installation and a cap head that provides a low profile. Additionally, the screw may feature unique characteristics such as corrosion-resistant coatings or specialized threading to improve grip and stability ³.

Benefits

Using the 3967867 Socket Head Cap Screw in truck maintenance and repair offers several benefits. It provides improved fastening strength, ensuring components remain securely attached. The ease of installation with a hex key reduces the time required for maintenance tasks. Furthermore, its resistance to wear and corrosion extends the lifespan of the screw, making it a reliable choice for long-term use in commercial trucks.

Installation and Usage Guidelines

Proper installation of the 3967867 Socket Head Cap Screw involves several steps to ensure optimal performance. Begin by selecting the appropriate hex key for the screw size. Insert the hex key into the socket and align the screw with the designated hole. Turn the hex key clockwise to drive the screw into place, ensuring it is seated properly. Use a torque wrench to achieve the recommended torque specifications for the screw, which can be found in the manufacturer’s guidelines. This ensures the screw is tightened to the correct level without over-tightening, which could damage the screw or the surrounding components.

Troubleshooting and Maintenance

Common issues with Socket Head Cap Screws include loosening over time due to vibration or wear. To troubleshoot, inspect the screw for signs of damage or corrosion. If the screw appears worn, replacement may be necessary. Regular maintenance involves checking the tightness of the screw periodically and reapplying torque as needed. Additionally, ensuring the screw and surrounding areas are clean and free of debris can prevent premature wear and corrosion.

Cummins: Manufacturer Overview

Cummins Inc. is a leading manufacturer in the commercial truck industry, known for its high-quality engines and components. Founded in 1919, Cummins has a long history of innovation and excellence. The company offers a wide range of products, including engines, filtration systems, and aftermarket parts, all designed to meet the rigorous demands of commercial trucking. Cummins’ reputation for reliability and performance makes it a preferred manufacturer for critical truck components, ensuring that parts like the 3967867 Socket Head Cap Screw deliver consistent and dependable performance.

Compatibility with Cummins Engines

The Socket Head Cap Screw part number 3967867, manufactured by Cummins, is a critical component in various engine assemblies. This part is designed to provide secure fastening in applications where a flush, smooth surface is required, making it ideal for use in engine environments where aesthetics and functionality are paramount.

ISB Series Engines

The ISB series engines, including the ISB CM2150, ISB CM850, ISB/ISD6.7 CM2150 SN, ISB6.7 CM2250, ISB6.7 CM2350 B101, and ISB6.7 G CM2180 B118, utilize the Socket Head Cap Screw 3967867 in several key areas. These engines are known for their robust design and high performance, and the screw is used to secure various components, ensuring the integrity and reliability of the engine’s structure.

• ISB CM2150 and ISB CM850: These engines benefit from the screw’s secure fastening capabilities, particularly in the assembly of engine covers and housings.
• ISB/ISD6.7 CM2150 SN: The screw is used in the assembly of the turbocharger and other critical components, ensuring they remain tightly secured under operational stresses.
• ISB6.7 CM2250 and ISB6.7 CM2350 B101: These engines use the screw in the assembly of the cylinder head and other internal components, providing a reliable fastening solution.
• ISB6.7 G CM2180 B118: The screw is employed in the assembly of the engine’s exhaust system, ensuring that all parts are securely fastened and aligned.

ISBE Series Engines

The ISBE series engines, including the ISBE CM2150 and ISBE4 CM850, also incorporate the Socket Head Cap Screw 3967867 in their design. These engines are designed for heavy-duty applications and require components that can withstand high stress and provide reliable fastening.

• ISBE CM2150: The screw is used in the assembly of the engine’s fuel system and other critical components, ensuring they remain securely fastened.
• ISBE4 CM850: This engine uses the screw in the assembly of the engine’s cooling system and other internal components, providing a reliable fastening solution.

The Socket Head Cap Screw 3967867 is a versatile and essential component in the assembly of Cummins engines, providing the necessary secure fastening for a variety of applications. Its use across different engine series highlights its importance in maintaining the structural integrity and performance of these engines.

Role of Part 3967867 Socket Head Cap Screw in Engine Systems

The part 3967867 Socket Head Cap Screw is integral to the assembly and operation of various engine components. In the drive system, this screw secures critical components, ensuring that the drive mechanism operates smoothly and efficiently. Its application here is essential for maintaining the structural integrity and alignment of the drive components.

In the fan assembly, the Socket Head Cap Screw plays a significant role in attaching the fan blades to the fan hub. This secure attachment is vital for the fan’s balanced rotation, which is necessary for effective cooling of the engine. The screw’s design allows for precise torque application, ensuring that the fan operates within specified parameters.

For the recirculation system, the Socket Head Cap Screw is used to fasten components that manage the flow of gases back into the engine for re-burning. This helps in reducing emissions and improving fuel efficiency. The screw’s robust construction ensures that it can withstand the high temperatures and pressures present in the recirculation system.

In the exhaust system, the Socket Head Cap Screw is employed to secure components such as catalytic converters and mufflers. This ensures that the exhaust system remains intact, facilitating the efficient expulsion of gases from the engine. The screw’s corrosion-resistant properties are particularly beneficial in this application, given the harsh environment of the exhaust system.

Lastly, in the seal installer, the Socket Head Cap Screw is used to secure the installation tool in place. This ensures that seals are installed with the correct amount of pressure, preventing leaks and ensuring the engine’s components are properly sealed. The screw’s ease of use with various tools makes it an ideal choice for this application.

Conclusion

The 3967867 Socket Head Cap Screw is a critical component in the maintenance and operation of commercial trucks and Cummins engines. Its robust design, ease of installation, and resistance to wear and corrosion make it an essential part for ensuring the reliability and efficiency of truck and engine systems. Proper installation and regular maintenance of this screw are vital for the continued performance and longevity of the components it secures.