4353890
Hexagon Head Cap Screw
Cummins®

Introduction

The Hexagon Head Cap Screw is a fundamental component in commercial trucks, providing secure fastening solutions that are vital for the integrity and safety of truck assemblies. Manufactured by Cummins, a renowned name in the commercial truck industry, the 4353890 Hexagon Head Cap Screw exemplifies the quality and reliability that Cummins is known for. This screw plays a significant role in various fastening applications within commercial trucks, ensuring that components remain securely attached under demanding conditions.

Basic Concepts of Hexagon Head Cap Screw

A Hexagon Head Cap Screw is characterized by its hexagonal head, which allows for efficient tightening and loosening using a wrench or socket. The design of the screw includes a threaded shaft that engages with the internal threads of a nut or a tapped hole, creating a strong and durable connection. In fastening applications, the Hexagon Head Cap Screw is utilized to join components together, providing structural integrity and resistance to vibration and movement.

Purpose of the 4353890 Hexagon Head Cap Screw in Truck Operation

The 4353890 Hexagon Head Cap Screw is specifically designed to play a role in the assembly and maintenance of commercial trucks. It is used in various applications where secure fastening is required, such as attaching engine components, securing chassis parts, and fastening body panels. The screw’s design ensures that it can withstand the rigors of truck operation, including exposure to vibrations, varying temperatures, and mechanical stress.

Key Features

The 4353890 Hexagon Head Cap Screw boasts several key features that enhance its performance and reliability. It is constructed from high-quality materials, typically a grade of steel that offers excellent strength and durability. The screw features a coarse thread type, which provides a strong grip and resistance to loosening. The hexagonal head design allows for easy installation and removal using standard tools, ensuring convenience during maintenance procedures.

Benefits

Utilizing the 4353890 Hexagon Head Cap Screw offers several advantages. Its durable construction ensures long-lasting performance, reducing the need for frequent replacements. The screw’s design provides ease of use, allowing for quick and efficient installation. Additionally, the hexagonal head offers resistance to loosening, maintaining a secure connection even under dynamic conditions.

Installation Process

Proper installation of the 4353890 Hexagon Head Cap Screw is vital to ensure optimal performance and safety. Begin by selecting the appropriate size and type of screw for the application. Use a tap to create threads in the hole if necessary. Align the screw with the hole and begin threading it in by hand to avoid cross-threading. Once started, use a wrench or socket to tighten the screw to the recommended torque specification, ensuring a secure fit without over-tightening.

Troubleshooting Common Issues

Common issues with Hexagon Head Cap Screws include loosening, corrosion, and damage to the head. To address loosening, ensure that the screw is tightened to the proper torque specification and consider using a thread locker for added security. Corrosion can be prevented by using screws made from corrosion-resistant materials and applying a protective coating. If the head of the screw becomes damaged, replace the screw to maintain the integrity of the fastening.

Maintenance Tips

Regular maintenance of Hexagon Head Cap Screws is important to prolong their lifespan and ensure continued reliable performance. Inspect screws periodically for signs of loosening, corrosion, or damage. Tighten screws as needed and replace any that show signs of wear or failure. Applying a protective coating can help prevent corrosion and extend the life of the screws.

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 strong reputation for quality, innovation, and reliability in the commercial truck industry. The company offers a wide range of products and services designed to meet the needs of customers in various industries, including transportation, construction, and agriculture.

Hexagon Head Cap Screw 4353890 in Cummins Engines

The Cummins part number 4353890, a Hexagon Head Cap Screw, is a critical component in various Cummins engine models. This screw is integral to the assembly and maintenance of several engine types, ensuring structural integrity and operational efficiency.

F3.8 CM2350 Series

The F3.8 CM2350 engine, part of the Cummins F-Series, utilizes the 4353890 screw in its assembly. This engine is known for its reliability and efficiency, often used in various industrial applications. The screw plays a vital role in securing various engine components, ensuring that the engine operates smoothly under different conditions.

QSB6.7 CM2350 and QSF3.8 CM2350

Both the QSB6.7 CM2350 and QSF3.8 CM2350 engines incorporate the 4353890 screw in their design. These engines are part of the Cummins QSB and QSF series, which are widely used in agricultural and industrial machinery. The screw is essential in maintaining the structural integrity of these engines, particularly in areas subjected to high stress and vibration.

QSG12/X12 CM2350

The QSG12/X12 CM2350 engine, another variant in the Cummins lineup, also employs the 4353890 screw. This engine is designed for heavy-duty applications, providing robust performance and durability. The screw is used in critical areas where it helps to secure components that are exposed to extreme conditions.

QSL9 CM2350 and QSX15 CM2350

The QSL9 CM2350 and QSX15 CM2350 engines, both part of the Cummins QSL and QSX series, also feature the 4353890 screw. These engines are known for their power and reliability, often used in construction and mining equipment. The screw is crucial in maintaining the alignment and stability of various engine parts, ensuring optimal performance and longevity.

Role of Part 4353890 Hexagon Head Cap Screw in Engine Systems

The part 4353890 Hexagon Head Cap Screw is integral in securing various components within engine systems, ensuring stability and proper function. In the context of the Diesel Exhaust Fluid (DEF) system, this screw plays a significant role in maintaining the integrity of the DEF tank and its associated components.

DEF Tank Assembly

Within the DEF tank assembly, the 4353890 Hexagon Head Cap Screw is used to fasten the tank to its mounting brackets. This secure attachment prevents any movement or shifting of the tank, which could lead to leaks or improper function of the DEF system. The screw’s hexagonal head allows for easy and precise tightening, ensuring a snug fit that withstands the vibrations and stresses encountered during engine operation.

DEF Tank Connections

The screw is also employed in securing the various connections to the DEF tank, such as the inlet and outlet pipes. These connections are vital for the proper flow of DEF into and out of the tank. By using the 4353890 Hexagon Head Cap Screw, engineers and mechanics can ensure that these connections remain tight and sealed, preventing any DEF leaks that could affect the performance of the Selective Catalytic Reduction (SCR) system.

DEF System Integrity

In addition to the tank and connections, the 4353890 Hexagon Head Cap Screw is used in other areas of the DEF system to maintain overall integrity. This includes securing DEF injectors, sensors, and other components that are essential for the accurate delivery and monitoring of DEF. The screw’s robust design ensures that these components remain firmly in place, contributing to the reliable operation of the DEF system.

Conclusion

By utilizing the 4353890 Hexagon Head Cap Screw in these applications, engineers and mechanics can enhance the durability and performance of the DEF system, ultimately supporting the efficient reduction of emissions in diesel engines. The 4353890 Hexagon Head Cap Screw is a fundamental component in several Cummins engine models, ensuring the integrity and efficiency of these engines across various applications.