4387100
Hexagon Head Cap Screw
Cummins®

The Cummins Hexagon Head Cap Screw, part number 4387100, is a specialized fastener designed for use in commercial trucks. Cummins, a well-established name in the commercial truck industry, produces a range of components that ensure the reliability and efficiency of heavy-duty vehicles. This part is integral to the fastening needs of these trucks, providing secure and durable connections in various applications.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is a type of fastener characterized by its hexagonal head, which allows for efficient tightening and loosening using standard tools such as wrenches or sockets. The design of the hexagon head ensures that the tool engages with the screw without slipping, providing a secure grip. In fastening applications, these screws play a role by joining components together, distributing loads, and withstanding various stresses without failure ¹.

Purpose and Role in Truck Operation

This Cummins part plays a specific role in the operation and maintenance of commercial trucks. It is used in various truck components, including engine mounts, chassis assemblies, and other critical areas where secure fastening is required. By providing a reliable connection, this screw helps maintain the structural integrity and performance of the truck, ensuring that components remain securely in place under operational stresses.

Key Features

The 4387100 Hexagon Head Cap Screw boasts several key features that enhance its performance and reliability. It is made from high-quality materials, typically a grade of steel that offers excellent strength and durability. The screw features a coarse thread, which provides a strong grip and efficient load distribution. The hexagonal head design allows for easy installation and removal using standard tools, ensuring convenience during maintenance procedures.

Benefits

Using the 4387100 Hexagon Head Cap Screw offers several benefits. Its durable material composition ensures long-lasting performance, even under demanding conditions. The screw’s resistance to loosening helps maintain secure connections over time, reducing the need for frequent re-tightening. Additionally, the ease of use with standard tools simplifies installation and maintenance processes, making it a practical choice for commercial truck applications.

Installation Guidelines

Proper installation of the 4387100 Hexagon Head Cap Screw is vital to ensure optimal performance and longevity. Begin by cleaning the installation area to remove any debris or contaminants. Use a tap to create a threaded hole if necessary, ensuring it matches the screw’s thread type. Insert the screw and tighten it using a wrench or socket, applying the recommended torque specification to avoid over-tightening, which could damage the screw or the component being fastened.

Troubleshooting Common Issues

Common issues with Hexagon Head Cap Screws may include loosening over time, corrosion, or damage to the head. To address loosening, ensure the screw is tightened to the proper torque specification during installation. If corrosion is present, clean the affected area and consider applying a corrosion-resistant coating to the screw. In cases of head damage, replace the screw to maintain secure fastening.

Maintenance Tips

Regular maintenance of the 4387100 Hexagon Head Cap Screw is important to prevent corrosion, wear, and ensure continued reliable performance. Inspect the screw periodically for signs of loosening or damage. Clean the screw and surrounding area to remove any buildup of dirt or contaminants. Applying a lubricant or corrosion-resistant coating can help protect the screw from environmental factors, extending its service life.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emissions technologies. With a history spanning over a century, Cummins has established a strong reputation in the commercial truck industry for producing reliable and high-performance components. The company’s extensive product range and commitment to innovation make it a trusted partner for commercial truck manufacturers and operators worldwide.

Cummins Hexagon Head Cap Screw 4387100 in Engine Applications

This Cummins part is a critical component in various Cummins engine models, ensuring secure fastening and structural integrity. This screw is integral to the assembly and maintenance of the QSK50, CM2150, and MCRS engines.

In the QSK50 engine, the 4387100 screw is utilized in several key areas, including the engine block and various sub-assemblies. Its robust design and high-strength properties make it ideal for withstanding the operational stresses and temperatures encountered in this engine.

For the CM2150 engine, the 4387100 screw plays a vital role in securing the engine’s internal and external components. Its precision engineering ensures that all parts are tightly fastened, contributing to the engine’s overall reliability and performance.

Similarly, in the MCRS engine, the 4387100 screw is employed in critical fastening applications. Its use in this engine underscores its importance in maintaining the structural integrity and operational efficiency of the MCRS.

The consistent use of the 4387100 screw across these engines highlights its versatility and reliability in demanding engine environments. Cummins’ commitment to quality and performance is evident in the design and application of this screw, ensuring that it meets the rigorous demands of modern engine technology.

Role of Part 4387100 Hexagon Head Cap Screw in Various Components

The 4387100 Hexagon Head Cap Screw is instrumental in securing and maintaining the integrity of several key components within engine systems.

Aftertreatment Device

In the aftertreatment device, the 4387100 screw is utilized to fasten components such as the diesel particulate filter (DPF) and selective catalytic reduction (SCR) systems. It ensures that these components remain securely attached, which is essential for the efficient reduction of emissions and the overall performance of the aftertreatment system.

Arrangement

Within the engine arrangement, the 4387100 screw plays a significant role in assembling various sub-components. It is commonly used to secure engine mounts, brackets, and other structural elements, ensuring that the engine remains stable and aligned during operation.

Pressure Regulator Valve

The pressure regulator valve relies on the 4387100 screw to maintain its structural integrity. This screw is used to attach the valve to its housing, ensuring that it can withstand the pressures it regulates without leaking or malfunctioning.

Rain Cap

On the rain cap, the 4387100 screw is employed to secure the cap to the engine compartment. This not only protects the engine from environmental elements but also ensures that the cap remains in place under various driving conditions, contributing to the longevity and reliability of the engine system.

Conclusion

The Cummins Hexagon Head Cap Screw, part number 4387100, is a vital component in the commercial truck industry, providing secure and durable fastening solutions for various engine and truck components. Its robust design, high-strength properties, and ease of use make it an essential part for maintaining the structural integrity and performance of commercial trucks. Proper installation, regular maintenance, and addressing common issues ensure the longevity and reliability of this critical fastener.