3931411
Hexagon Flange Head Cap Screw
Cummins®

Introduction

The Hexagonal Flange Head Cap Screw, identified by part number 3931411, is a specialized fastener produced by Cummins, a renowned manufacturer in the automotive and heavy-duty truck industry. This screw is integral to the assembly and maintenance of heavy-duty trucks, ensuring secure and reliable connections in various components.

Basic Concepts

Hexagonal Flange Head Cap Screws are designed with a hexagonal head and a flange that provides additional surface area for torque application. These screws are typically made from high-strength materials such as alloy steel, which offers durability and resistance to wear ¹. In the automotive industry, they are commonly used for applications requiring high tensile strength and resistance to loosening, such as in engine components, chassis assemblies, and other critical areas.

Purpose and Function

The 3931411 Hexagonal Flange Head Cap Screw plays a significant role in the operation of heavy-duty trucks. It is used to secure components that experience substantial stress and vibration, ensuring that parts remain firmly in place. This screw contributes to the overall functionality and safety of the vehicle by maintaining the integrity of critical connections ².

Key Features

The primary characteristics of the 3931411 Hexagonal Flange Head Cap Screw include its hexagonal flange head design, which allows for efficient torque application and reduces the risk of cam-out during installation. The cap screw functionality ensures a secure fit, while the flange provides additional stability. Unique attributes such as corrosion resistance and high tensile strength further distinguish this screw from other types ³.

Benefits

Using the 3931411 Hexagonal Flange Head Cap Screw offers several advantages. The design enhances stability by providing a larger contact area, which improves load distribution across the connection. Additionally, the screw’s resistance to loosening ensures that components remain securely fastened, even under dynamic conditions. This contributes to the longevity and reliability of the truck’s assembly.

Installation and Usage

Proper installation of the 3931411 Hexagonal Flange Head Cap Screw is crucial for optimal performance. Recommended torque settings should be followed to ensure a secure fit without over-tightening, which could lead to damage. Compatible materials, such as those specified by Cummins, should be used to maintain the integrity of the connection. Best practices include using the appropriate tools and ensuring that the screw is aligned correctly during installation.

Troubleshooting and Maintenance

Common issues with the 3931411 Hexagonal Flange Head Cap Screw may include corrosion, stripping, or loosening. Regular inspection and maintenance can help identify these problems early. Corrosion can be mitigated by using screws with a protective coating, while stripping may be prevented by adhering to recommended torque settings. If loosening is detected, re-tightening or replacing the screw may be necessary to maintain a secure connection.

Cummins Overview

Cummins is a well-established manufacturer with a strong reputation in the automotive industry. The company is known for its commitment to producing high-quality components that meet rigorous standards. Cummins’ history of innovation and dedication to excellence ensures that their products, including the 3931411 Hexagonal Flange Head Cap Screw, are reliable and perform well in demanding applications.

Hexagonal Flange Head Cap Screw 3931411 in Cummins Engines

The Cummins part number 3931411, a Hexagonal Flange Head Cap Screw, is a critical component in several Cummins engine models. This part is designed to secure various engine components, ensuring structural integrity and operational efficiency. Below is a detailed description of how this screw fits into the specified Cummins engines.

6B5.9

In the 6B5.9 engine, the 3931411 screw is utilized to fasten components that require a robust and reliable connection. Its hexagonal flange head provides a secure grip, while the cap screw ensures that the fastened parts remain tightly in place under operational stresses.

ISB CM2150, ISB6.7 CM2250, ISB6.7 CM2350 B101

The ISB CM2150, ISB6.7 CM2250, and ISB6.7 CM2350 B101 engines share a similar design philosophy, where the 3931411 screw is employed to secure various engine parts. These engines benefit from the screw’s ability to maintain tight connections, which is crucial for the smooth operation of the engine’s internal components.

QSB6.7 CM2250

In the QSB6.7 CM2250 engine, the 3931411 screw is used to fasten components that are subjected to significant mechanical stress. The screw’s design ensures that these parts remain securely fastened, contributing to the engine’s overall durability and performance.

X15 CM2350 X116B

The X15 CM2350 X116B engine also incorporates the 3931411 screw to secure various engine parts. This screw’s hexagonal flange head and cap design provide a reliable fastening solution, ensuring that the engine’s components remain securely in place during operation.

Each of these engines relies on the 3931411 screw to maintain the integrity of its structure and ensure that all fastened components perform optimally under operational conditions.

Role of Part 3931411 Hexagonal Flange Head Cap Screw in Engine Systems

The part 3931411 Hexagonal Flange Head Cap Screw is instrumental in securing various components within engine systems, ensuring stability and reliability in operation.

Air Intake Connection

In the air intake system, the 3931411 screw is used to fasten the air intake connection securely. This connection is vital for directing the airflow into the engine, where it mixes with fuel for combustion. The screw’s hexagonal flange head provides a robust grip, preventing loosening due to vibrations, which is common in engine operations.

Arrangement and Compressor Air Inlet

When it comes to the arrangement of components, particularly around the compressor air inlet, the 3931411 screw plays a significant role. It ensures that the components are held firmly in place, maintaining the precise alignment required for optimal airflow and efficiency. The flange head design allows for easy tightening and adjustment, which is essential during maintenance or modifications.

Connection Stability

The screw is also pivotal in maintaining the integrity of connections within the engine system. Whether it’s securing hoses, pipes, or other components, the 3931411 screw ensures that these connections remain tight and secure, preventing leaks and ensuring consistent performance. Its design is particularly beneficial in high-stress areas where standard screws might fail.

Air Intake System

In the broader air intake system, the 3931411 screw is used to secure various parts, from filters to sensors. Its role in these applications is to provide a secure fastening solution that can withstand the dynamic conditions of engine operation, including temperature fluctuations and mechanical stress.

Conclusion

Overall, the 3931411 Hexagonal Flange Head Cap Screw is a key component in ensuring the structural integrity and operational efficiency of engine systems. Its application across different components highlights its versatility and reliability in demanding environments.