4900266
Hexagon Flange Head Cap Screw
Cummins®

The Hexagonal Flange Head Cap Screw (Part #4900266) manufactured by Cummins is a specialized fastener designed for use in commercial truck components. This screw is integral to ensuring the secure assembly of various truck parts, contributing to the overall reliability and performance of the vehicle.

Basic Concepts

A Hexagonal Flange Head Cap Screw is a type of bolt characterized by its hexagonal head and flange. The hexagonal head allows for efficient tightening and loosening using a wrench, while the flange provides additional surface area to distribute load and prevent the screw from sinking into the material. In the context of a truck’s mechanical system, this screw plays a role in fastening components that require both strength and stability ¹.

Purpose and Role in Truck Operation

This Cummins part serves a vital function in the operation of a truck by securely fastening components that are subject to significant stress and vibration. It is commonly used in applications where the screw needs to resist loosening over time, such as in engine mounts, chassis components, and other critical assemblies. By providing a stable and durable connection, this screw contributes to the integrity and longevity of the truck’s mechanical systems ².

Key Features

The 4900266 boasts several key features that enhance its performance and reliability. Its hexagonal head design allows for easy and precise tightening using a wrench, reducing the risk of damage to the screw or surrounding components. The flange feature provides additional surface area, which helps in distributing the load more evenly and preventing the screw from embedding into the material. The screw is typically made from high-strength materials, such as alloy steel, to ensure durability under heavy-duty conditions. Additionally, the threading is designed to provide a strong grip, further enhancing the screw’s resistance to loosening ³.

Benefits

Using the 4900266 in truck assemblies offers several benefits. The design of the screw contributes to improved stability and enhanced load distribution, which are critical in applications where components are subject to dynamic loads and vibrations. The resistance to loosening ensures that the fastener remains secure over time, reducing the need for frequent maintenance. Additionally, the durability of the screw under heavy-duty conditions makes it a reliable choice for commercial truck applications.

Installation Process

Proper installation of the 4900266 is crucial for ensuring secure and effective fastening. The following steps outline the installation process:

1. Prepare the Surface: Ensure that the surface where the screw will be installed is clean and free of debris.
2. Align the Screw: Position the screw in the designated hole, ensuring it is aligned correctly.
3. Tighten the Screw: Use a wrench to tighten the screw to the specified torque. It is important to follow the manufacturer’s torque specifications to avoid over-tightening or under-tightening, both of which can compromise the integrity of the fastening.
4. Check for Stability: After tightening, check that the screw is secure and that the flange is flush with the surface.

Troubleshooting and Maintenance

Common issues associated with Hexagonal Flange Head Cap Screws include loosening, corrosion, and damage. To troubleshoot these problems:

• Loosening: Check for proper torque and ensure that the screw is not subjected to excessive vibration. Re-tighten if necessary, following the torque specifications.
• Corrosion: Inspect for signs of rust or corrosion. If detected, clean the affected area and apply a corrosion-resistant coating to prevent further degradation.
• Damage: Examine the screw for any signs of wear or damage. Replace the screw if it is compromised to maintain the integrity of the assembly.

Regular maintenance, such as periodic inspection and re-tightening, can help prolong the lifespan of the screw and ensure optimal performance.

Cummins: Manufacturer Overview

Cummins Inc. is a renowned manufacturer with a rich history of producing high-quality automotive components. Established in 1919, Cummins has built a reputation for innovation, reliability, and excellence in the commercial truck industry. The company is committed to delivering products that meet the demanding requirements of heavy-duty applications, ensuring that their components contribute to the safety, efficiency, and durability of commercial vehicles.

Cummins Part 4900266: Hexagonal Flange Head Cap Screw in Engine Applications

The Cummins part 4900266, a Hexagonal Flange Head Cap Screw, is a critical component in the assembly and maintenance of various engine models. This part is designed to provide secure fastening in applications where high strength and durability are essential. The engines that utilize this screw include the A1400, A1700, A2000, and A2300 series.

In the A1400 and A1700 engines, the 4900266 screw is often used in areas requiring robust fastening solutions, such as securing engine covers or housings. Its hexagonal flange head allows for easy and efficient tightening with a wrench, ensuring that components remain securely fastened under operational stresses.

For the A2000 and A2300 engines, the 4900266 screw is similarly employed in critical fastening applications. These engines, typically used in heavy-duty applications, benefit from the screw’s ability to withstand high loads and maintain integrity over extended periods. The use of this screw in these engines ensures that components are held firmly in place, contributing to the overall reliability and performance of the engine.

In all these engines, the 4900266 screw plays a vital role in maintaining structural integrity and ensuring that the engine operates smoothly and efficiently. Its design and material properties make it an ideal choice for the demanding environments these engines operate in.

Part 4900266 Hexagonal Flange Head Cap Screw Component Usage

The part 4900266 Hexagonal Flange Head Cap Screw is instrumental in the assembly and maintenance of various engine systems, particularly within the alternator component. This screw is utilized to secure the alternator to the engine block or bracket, ensuring a stable and reliable connection.

In the alternator, the screw plays a significant role in maintaining the structural integrity of the assembly. It helps to keep the alternator firmly in place, which is essential for the efficient operation of the charging system. The hexagonal flange head design of the screw allows for easy tightening and loosening using a socket wrench, facilitating quick and secure adjustments during maintenance or repair procedures.

Additionally, the flange head of the screw provides a larger surface area for distribution of the clamping force, reducing the risk of damage to the alternator housing or the engine bracket. This feature is particularly beneficial in high-vibration environments typical of engine compartments, where secure fastening is paramount to prevent loosening over time.

Furthermore, the cap screw’s design ensures that it remains flush with the surface it is mounted on, minimizing the risk of interference with other components or causing damage during operation. This is especially important in compact engine bays where space is at a premium, and every component must be precisely positioned.

Conclusion

In summary, the part 4900266 Hexagonal Flange Head Cap Screw is a key component in the reliable and efficient functioning of the alternator within engine systems, providing both structural stability and ease of maintenance.