3926863
Hexagon Flange Head Cap Screw
Cummins®

Introduction

The Hexagon Flange Head Cap Screw, specifically Part #3926863 by Cummins, is a vital component in commercial truck maintenance. Cummins, a renowned manufacturer, produces this screw, which is integral to the assembly and operation of heavy-duty trucks. This overview will delve into the specifics of this screw, its applications, and the reasons behind its trusted use in the commercial trucking sector.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and flange, which provides a larger bearing surface and aids in preventing the screw from being driven too far into the material ¹. In the automotive industry, these screws are commonly used for their strength and reliability. In heavy-duty trucks, they are particularly valuable for securing components that require robust fastening solutions, such as engine parts, chassis elements, and various structural assemblies.

Purpose and Role in Truck Operation

The 3926863 Hexagon Flange Head Cap Screw plays a significant role in the operation of trucks by ensuring the secure attachment of critical components. Its design allows for efficient distribution of clamping force, which is crucial for maintaining the integrity of truck assemblies under various operational stresses ². This screw contributes to the overall stability and reliability of the truck, facilitating smooth and safe operation.

Key Features

The 3926863 Hexagon Flange Head Cap Screw is distinguished by several key features. Its hexagonal head allows for easy tightening and loosening using standard tools, while the flange provides additional surface area to distribute the load and prevent damage to the fastened material. The screw is typically made from high-strength materials, ensuring durability and resistance to wear. Additionally, its design includes features that enhance performance, such as a precise thread pitch for optimal engagement and a coating that provides corrosion resistance.

Benefits

Using the 3926863 Hexagon Flange Head Cap Screw offers several advantages. The screw’s robust construction provides superior fastening strength, making it ideal for applications where high loads and vibrations are common. Its resistance to corrosion ensures longevity, even in harsh operating environments ³. Furthermore, the screw’s design facilitates easy installation and removal, reducing maintenance time and effort.

Installation and Usage

Proper installation of the 3926863 Hexagon Flange Head Cap Screw is crucial for ensuring optimal performance. It is recommended to follow torque specifications provided by the manufacturer to achieve the correct clamping force without over-tightening, which could lead to damage. Using the appropriate tools and techniques, such as a torque wrench, ensures that the screw is installed to the manufacturer’s standards, promoting reliable operation and longevity.

Troubleshooting and Maintenance

Common issues with the 3926863 Hexagon Flange Head Cap Screw may include corrosion or loosening over time. Regular inspection and maintenance can help identify and address these problems early. If corrosion is detected, cleaning the affected area and reapplying a protective coating can help prevent further degradation. For screws that have loosened, re-tightening to the specified torque is recommended. Additionally, ensuring that mating surfaces are clean and free of debris can enhance the screw’s performance and lifespan.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a rich history of innovation and quality, Cummins has established a strong reputation in the commercial truck industry. The company’s commitment to excellence is reflected in its wide range of products, including the 3926863 Hexagon Flange Head Cap Screw. Professionals trust Cummins-manufactured parts for their reliability, performance, and durability, making them a preferred choice in the industry.

Hexagon Flange Head Cap Screw 3926863 in Cummins Engines

The Hexagon Flange Head Cap Screw part number 3926863, manufactured by Cummins, is a critical component in various Cummins engine models. This screw is integral to the assembly and maintenance of these engines, ensuring secure fastening and structural integrity.

6C8.3 and G8.3 Series

In the 6C8.3 and G8.3 engines, the 3926863 screw is used in several key areas. These engines, known for their robust performance, require reliable fastening solutions to maintain the integrity of their components under high stress conditions. The screw’s design allows for precise and secure attachment, which is crucial for the engine’s operation.

ISB/ISD Series

The ISB/ISD series, including models such as ISB CM550, ISB/ISD4.5 CM2150 B119, ISB/ISD6.7 CM2150 SN, and ISB/ISD4.5 CM2220 D108, also utilize the 3926863 screw. These engines are designed for heavy-duty applications, and the screw’s durability and strength are essential for maintaining the structural integrity of the engine components.

ISBE and ISC Series

The ISBE CM2150, ISBE4 CM850, ISC CM2150, ISC CM554, ISC CM850, and ISC8.3 CM2250 engines incorporate the 3926863 screw in various applications. These engines are known for their versatility and efficiency, and the screw’s precise fit ensures that all components are securely fastened, contributing to the engine’s overall performance.

ISL Series

The ISL CM2150, ISL CM554, ISL G CM2180, ISL9 CM2150 SN, and ISL9 CM2250 engines also feature the 3926863 screw. These engines are designed for a range of applications, from industrial to transportation, and the screw’s reliability is crucial for maintaining the engine’s performance and longevity.

GTA8.3 CM558 and C GAS PLUS CM556

The GTA8.3 CM558 and C GAS PLUS CM556 engines use the 3926863 screw in specific applications. These engines are designed for specialized uses, and the screw’s precision and strength are essential for ensuring that all components are securely fastened.

B6.7 CM2670 B153B

The B6.7 CM2670 B153B engine also incorporates the 3926863 screw. This engine is known for its reliability and efficiency, and the screw’s design ensures that all components are securely fastened, contributing to the engine’s overall performance.

4B3.9 and 6B5.9

The 4B3.9 and 6B5.9 engines use the 3926863 screw in various applications. These engines are designed for specific uses, and the screw’s precision and strength are essential for maintaining the engine’s performance and longevity.

The 3926863 Hexagon Flange Head Cap Screw is a versatile and essential component in many Cummins engine models, ensuring that all parts are securely fastened and the engine operates efficiently.

Role of Part 3926863 Hexagon Flange Head Cap Screw in Engine Systems

The part 3926863 Hexagon Flange Head Cap Screw is a versatile fastener utilized across various components within engine systems. Its design allows for secure and reliable fastening, ensuring the integrity and performance of the engine.

Alternator Mounting

In alternator mounting applications, the Hexagon Flange Head Cap Screw secures the alternator to the engine block. This ensures stable operation and efficient power generation.

Block and Cylinder

When used in conjunction with the block and cylinder, this screw plays a role in maintaining the structural integrity of these core engine components. It helps in securing various covers and brackets that are essential for the engine’s operation.

Bracket Expansion Mounting

For bracket expansion mounting, the screw is employed to fasten expansion brackets, which are critical for accommodating thermal expansion and contraction within the engine system.

Compressor and Air Components

In compressor and air system applications, the screw is used to secure compressor housings and air intake components, ensuring they remain firmly in place during operation.

Cover and Front Gear

The screw is also utilized in securing covers and front gear components. This includes the front gear cover, where it ensures that the cover remains tightly sealed to protect internal components.

Cylinder Block

Within the cylinder block, the Hexagon Flange Head Cap Screw is used to fasten various accessories and components, contributing to the overall stability and performance of the engine.

Drive Components

For drive components such as the fan drive and water pump, the screw ensures that these parts are securely attached to the engine, allowing for efficient operation and heat management.

Front Cover Hardware Kit

In the front cover hardware kit, this screw is a key component for assembling and securing the front cover, which protects the front end of the engine.

Long Block and Short Block Applications

In both long block and short block configurations, the screw is used extensively to secure various components, ensuring that the engine maintains its structural integrity during assembly and operation.

Mounting and Gear Cover

For mounting gear covers and other components, the Hexagon Flange Head Cap Screw provides a reliable fastening solution, ensuring that these parts remain in place under various operating conditions.

Repair Kit and Timing Pin Housing

In repair kits and timing pin housing applications, the screw is used to reassemble and secure components, facilitating efficient engine repairs and maintenance.

Conclusion

The 3926863 Hexagon Flange Head Cap Screw by Cummins is a critical component in the maintenance and operation of heavy-duty trucks and various Cummins engine models. Its robust design, reliability, and ease of use make it an essential fastener in the commercial trucking industry. Proper installation and maintenance of this screw ensure the longevity and performance of truck and engine assemblies.