3947206
Studded Flange Cap Screw
Cummins®

The 3947206 Studded Flange Cap Screw is a specialized fastener produced by Cummins, a well-established manufacturer in the automotive industry. This screw is designed for use in heavy-duty trucks, where it plays a role in ensuring the secure assembly of various components. Cummins is renowned for its commitment to quality and innovation in manufacturing, making this screw a reliable choice for demanding applications ¹.

Basic Concepts of Studded Flange Cap Screws

A studded flange cap screw is a type of fastener that includes a threaded stud and a flanged head. The stud extends through the components being joined, and the flange provides a broad surface area for distribution of clamping force. This design allows for efficient load distribution and enhanced stability. In the automotive industry, studded flange cap screws are commonly used in applications requiring high strength and resistance to vibration, such as in engine assemblies and chassis components ².

Purpose of the 3947206 Studded Flange Cap Screw

The 3947206 Studded Flange Cap Screw is specifically designed to play a role in the operation of heavy-duty trucks by securely fastening critical components. It contributes to the assembly and functionality of truck parts by providing a robust and reliable fastening solution. This screw ensures that components remain firmly in place, even under the strenuous conditions encountered in heavy-duty applications.

Key Features

The 3947206 Studded Flange Cap Screw boasts several key features that enhance its performance and durability. It is constructed from high-strength materials, ensuring it can withstand the rigors of heavy-duty use. The design includes a flanged head that distributes clamping force evenly, reducing the risk of component damage. Additionally, the screw features a threaded stud that provides a secure connection, minimizing the likelihood of loosening over time ³.

Benefits

Using the 3947206 Studded Flange Cap Screw offers several benefits. Its high-strength material composition and design elements contribute to improved fastening strength, making it ideal for applications where reliability is paramount. The screw’s resistance to vibration ensures that it remains securely in place, even in dynamic operating conditions. Furthermore, its durability allows for prolonged use, reducing the need for frequent replacements and maintenance.

Installation Process

Proper installation of the 3947206 Studded Flange Cap Screw is crucial for ensuring secure and effective fastening. To install the screw, first, ensure that the components to be joined are properly aligned. Use the appropriate tools to insert the threaded stud through the components and engage the screw with a compatible nut. Tighten the nut to the recommended torque specification to achieve the desired clamping force. It is important to follow best practices, such as using a torque wrench, to ensure consistent and reliable fastening.

Troubleshooting and Maintenance

Common issues associated with studded flange cap screws include loosening due to vibration and corrosion. To troubleshoot these issues, regularly inspect the screw for signs of wear or damage. If loosening is detected, re-tighten the screw to the recommended torque specification. To prevent corrosion, apply a suitable anti-corrosion coating or lubricant. Regular maintenance, such as cleaning and inspecting the screw, will help prolong its life and ensure continued reliable performance.

Cummins: Manufacturer Overview

Cummins Inc. is a leading manufacturer in the automotive industry, with a rich history of innovation and quality. The company is known for its commitment to producing reliable and high-performance components for heavy-duty applications. Cummins’ reputation is built on a foundation of engineering excellence and a dedication to meeting the needs of its customers. The 3947206 Studded Flange Cap Screw is a testament to Cummins’ expertise in designing and manufacturing durable fastening solutions for the automotive industry.

Studded Flange Cap Screw (Part 3947206) Compatibility with Cummins Engines

The Studded Flange Cap Screw, part number 3947206, manufactured by Cummins, is a critical component used in various Cummins engine models. This part is essential for securing flanges and ensuring the integrity of the engine’s sealing and mounting systems.

ISB Series

• ISB CM2150
• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB5.9G CM2180
• ISB6.7 CM2250
• ISB6.7 CM2350 B101
• ISBE CM2150
• ISBE4 CM850

The Studded Flange Cap Screw is integral to the ISB series engines, providing robust fastening for flanges that are crucial for maintaining the engine’s structural and operational integrity. These engines, ranging from 4.5L to 6.7L, benefit from the secure fit and durability of this part.

QSB Series

• QSB4.5 CM2250 EC
• QSB4.5 CM850 (CM2850)
• QSB5.9 CM850
• QSB6.7 CM2250
• QSB6.7 CM2350 B105
• QSB6.7 CM850 (CM2850)
• QSB7 CM2880 B117

In the QSB series, the Studded Flange Cap Screw is used across various engine sizes, from 4.5L to 7L. This part ensures that flanges are tightly secured, which is vital for the proper functioning of these engines. The QSB series engines, known for their versatility and power, rely on this screw for maintaining the alignment and sealing of critical components.

Cross-Series Compatibility

The Studded Flange Cap Screw is designed to be compatible across multiple Cummins engine series, ensuring that it can be used in a variety of applications. This compatibility is achieved through standardized dimensions and materials that meet the stringent requirements of Cummins engines. The screw’s studded design provides enhanced grip and stability, making it suitable for high-stress environments typical of engine operations.

By ensuring a secure fit, the Studded Flange Cap Screw contributes to the overall reliability and performance of Cummins engines, whether in the ISB or QSB series. Its use in these engines underscores its importance in maintaining the structural integrity and operational efficiency of the engine’s flange connections.

Role of Part 3947206 Studded Flange Cap Screw in Engine Systems

The Part 3947206 Studded Flange Cap Screw is integral to the secure assembly and operation of various engine components. Its primary function is to provide a robust fastening solution that ensures components remain firmly in place under the dynamic conditions of engine operation.

In the cooler system, this screw is used to attach the cooler to its mounting brackets, ensuring that it remains stable and aligned correctly for optimal cooling performance.

For the engine oil system, the screw secures critical components such as the oil filter housing and oil passages, maintaining the integrity of the oil flow and preventing leaks.

In the fuel filter mounting setup, the screw plays a key role in attaching the fuel filter to its designated location, ensuring a secure fit that prevents fuel leaks and maintains efficient fuel delivery.

The harness and engine control wiring benefit from the screw’s ability to secure wiring looms and connectors, protecting the wiring from vibrations and ensuring consistent electrical connections.

When it comes to the engine control module (ECM), the screw is employed to mount the ECM securely to its location, safeguarding it from physical damage and ensuring stable operation.

In the fuel filter and long block assemblies, the screw is utilized to fasten various components, ensuring that all parts are correctly aligned and securely held in place.

For the auxiliary pump and its mounting, the screw provides the necessary strength to keep the pump stable, which is essential for its reliable operation within the fuel system.

Overall, the Part 3947206 Studded Flange Cap Screw is a versatile fastener that enhances the reliability and performance of multiple engine systems by ensuring that components are securely and correctly installed.

Conclusion

The 3947206 Studded Flange Cap Screw is a critical component in the assembly and operation of heavy-duty truck engines. Its robust design, high-strength materials, and reliable performance make it an essential part for ensuring the secure fastening of various engine components. Proper installation and maintenance of this screw are vital for the continued reliability and efficiency of engine systems.