4381986
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 4381986, is a component manufactured by Cummins, a well-established name in the commercial truck industry. This screw is significant in the maintenance and operation of commercial trucks, providing reliable fastening solutions that contribute to the overall integrity and performance of truck systems.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and flanged base. The hexagonal head allows for efficient torque application using standard tools, while the flange provides additional surface area to distribute load and prevent the screw from sinking into softer materials. In the context of truck components, this screw is utilized to secure various parts, ensuring they remain firmly in place under operational stresses.

Purpose and Role in Truck Operation

This Cummins part plays a role in the operation and maintenance of commercial trucks by securing critical components. It is applied in various truck systems, including engine mounts, chassis assemblies, and body panels. By providing a secure fastening solution, it helps maintain the structural integrity and alignment of these components, which is vital for the truck’s performance and safety.

Key Features

The 4381986 features a hexagonal head design that facilitates easy and precise torque application. Its flange characteristics offer enhanced load distribution and prevent the screw from embedding into the material it is fastening. Additionally, the screw is crafted from high-quality materials that provide durability, corrosion resistance, and the ability to withstand high tensile stresses, making it suitable for demanding truck applications.

Benefits

Using this part offers several benefits. It provides enhanced fastening security due to its design, which resists loosening under vibration—a common issue in truck operations. The ease of installation and removal is another advantage, as the hexagonal head allows for straightforward application and removal using standard tools. Additionally, its resistance to corrosion ensures longevity and reliable performance in various environmental conditions.

Installation Process

Proper installation of the 4381986 involves several steps to ensure optimal performance. Begin by cleaning the installation area to remove any debris or contaminants. Next, align the screw with the designated hole and start threading it in by hand to avoid cross-threading. Once the screw is started, use a torque wrench to tighten it to the specified torque setting, ensuring it is secure without over-tightening, which could damage the screw or the material it is fastening.

Troubleshooting and Maintenance

Common issues with this part may include loosening due to vibration or corrosion over time. To address loosening, re-torque the screw to the specified setting. If corrosion is present, clean the affected area thoroughly and consider applying a corrosion-resistant coating to prevent future issues. Regular inspection and maintenance of the screw will help prolong its lifespan and ensure continued reliable performance.

Cummins: Manufacturer Overview

Cummins is a reputable manufacturer with a long-standing history in the commercial truck industry. Known for its commitment to quality and innovation, Cummins produces a wide range of truck components, including the 4381986. The company’s reputation is built on its dedication to delivering reliable, high-performance parts that meet the demanding requirements of commercial truck applications.

Hexagon Flange Head Cap Screw (Part 4381986) in Cummins Engines

The Cummins Hexagon Flange Head Cap Screw, part number 4381986, is a critical component in several Cummins engine models. This screw is designed to provide secure fastening in various applications within the engine assembly. Here’s how it fits into specific Cummins engine models:

QSK60 Series

• QSK60 CM500 and QSK60 CM850 MCRS: In these engines, the part 4381986 is utilized for securing various engine components, ensuring that parts remain tightly fastened under operational stresses. This screw is particularly important in maintaining the integrity of the engine’s structural components.

• QSK60 G CM2358 K110: This engine variant also employs the Hexagon Flange Head Cap Screw for similar purposes. The screw’s design allows for easy installation and removal, which is crucial during maintenance and repair operations.

QSK60G

• QSK60G: In this engine model, the part 4381986 is used to fasten components that are subject to high mechanical loads. The screw’s flange head provides a larger surface area for torque application, ensuring that the fastening is both secure and reliable.

The use of the Hexagon Flange Head Cap Screw in these engines highlights its importance in maintaining the structural integrity and operational efficiency of the engine. Its design and material properties make it suitable for the demanding conditions within these engine systems.

Role of Part 4381986 Hexagon Flange Head Cap Screw in Engine Systems

This part is integral in securing various components within engine systems, ensuring stability and proper function.

Filter Assembly

In the filter assembly, the 4381986 screw is utilized to fasten the filter housing to the engine block or the filter base. This secure attachment is essential for maintaining the integrity of the filtration system, ensuring that contaminants are effectively removed from the engine oil before it circulates through the engine components. The screw’s hexagonal flange head provides a robust connection that resists loosening due to vibrations, which is common in engine operations.

Lubricating Oil System

Within the lubricating oil system, the 4381986 screw plays a significant role in attaching the oil pump to the engine block. The oil pump is responsible for circulating lubricating oil throughout the engine, reducing friction and wear on moving parts. The secure fastening provided by the screw ensures that the oil pump remains firmly in place, allowing it to operate efficiently without the risk of detachment or misalignment.

Additionally, the screw is used in the assembly of the oil filter housing, ensuring a leak-proof seal that prevents oil loss and maintains optimal lubrication levels. This is vital for the longevity and performance of the engine, as consistent lubrication is necessary to protect against metal-to-metal contact and subsequent wear.

Conclusion

The 4381986 Hexagon Flange Head Cap Screw, through its reliable fastening capabilities, contributes to the overall efficiency and durability of engine systems by ensuring that critical components remain securely in place and function as intended. Its design, material properties, and application in various engine systems underscore its importance in maintaining the structural integrity and operational efficiency of commercial trucks and engines.