4900394
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 4900394, is a component manufactured by Cummins, a well-established name in the commercial truck industry. This screw is integral to the maintenance and operation of commercial trucks, providing a reliable means of securing various components. Cummins is renowned for its high-quality parts and comprehensive product range, making the 4900394 Hexagon Flange Head Cap Screw a trusted choice for truck maintenance professionals ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and flange feature. In the automotive industry, these screws are commonly used to secure components that require a high degree of stability and resistance to vibration. In heavy-duty trucks, they are particularly valuable for applications where components are subjected to significant stress and movement, such as in the engine compartment or chassis ².

Purpose and Function

The 4900394 Hexagon Flange Head Cap Screw plays a role in the operation of a truck by securing critical components and contributing to the overall structural integrity of the vehicle. Its primary function is to provide a strong, stable connection between parts, ensuring that they remain firmly in place under various operating conditions. This is particularly important in heavy-duty trucks, where components are exposed to substantial stress and vibration.

Key Features

The 4900394 Hexagon Flange Head Cap Screw is distinguished by several key features. Its hexagonal head allows for efficient tightening and loosening using a wrench, providing a secure grip that minimizes the risk of slippage. The flange feature at the base of the screw head distributes the load more evenly across the surface, enhancing the screw’s stability and reducing the likelihood of it pulling through the material. Additionally, the screw is typically made from high-strength materials, such as alloy steel, which contributes to its durability and resistance to corrosion.

Benefits

Using the 4900394 Hexagon Flange Head Cap Screw offers several advantages. Its design enhances durability, making it suitable for long-term use in demanding environments. The flange feature provides additional resistance to loosening, which is crucial in applications where vibrations are common. Furthermore, the hexagonal head allows for easy installation and removal, facilitating maintenance procedures and reducing downtime.

Installation Process

Proper installation of the 4900394 Hexagon Flange Head Cap Screw is vital to ensure optimal performance and longevity. Begin by selecting the appropriate drill bit to create a pilot hole that matches the screw’s diameter. This step helps to prevent the material from splitting during installation. Next, align the screw with the pilot hole and use a wrench to tighten it securely. It is important to achieve the correct torque specification to ensure the screw is adequately tightened without overstressing the material.

Troubleshooting and Maintenance

Common issues associated with Hexagon Flange Head Cap Screws include loosening due to vibration and corrosion. To identify problems, regularly inspect the screws for signs of wear, such as rust or damage to the head. If a screw appears loose, it should be tightened to the specified torque or replaced if necessary. To prolong the lifespan of the screws, apply a corrosion-resistant coating and ensure that all components are properly aligned during installation to minimize stress on the fasteners.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. Founded in 1919, Cummins has a long-standing reputation for innovation and quality in the commercial truck industry. The company offers a wide range of products, including engines, powertrains, and aftermarket parts, all designed to meet the rigorous demands of heavy-duty applications. Cummins’ commitment to excellence and customer satisfaction has established it as a trusted partner in the commercial truck sector.

Cummins Hexagon Flange Head Cap Screw 4900394 in Engine Applications

The Cummins Hexagon Flange Head Cap Screw, part number 4900394, is a critical component in various engine applications. This screw is designed to provide secure fastening in environments where high strength and durability are paramount.

A1400 and A1700 Engines

In the A1400 and A1700 engines, the 4900394 screw is often utilized in areas requiring robust fastening solutions. These engines, known for their reliability and efficiency, benefit from the screw’s ability to withstand high stress and maintain a tight seal. The screw’s design ensures that it can handle the operational demands of these engines, contributing to their overall performance and longevity.

A2000 and A2300 Engines

For the A2000 and A2300 engines, the 4900394 screw plays a crucial role in securing various components. These engines, which are part of a larger family of high-performance engines, require components that can endure significant mechanical stress. The screw’s hexagonal flange head provides a large surface area for torque application, ensuring that the fastening remains secure under operational conditions. This is particularly important in maintaining the integrity of engine assemblies and preventing potential failures.

Common Usage Across Engine Models

Across the A1400, A1700, A2000, and A2300 engines, the 4900394 screw is employed in several key areas. These include securing engine covers, attaching critical sub-assemblies, and ensuring the stability of various engine components. The screw’s design, featuring a flange head and a robust shank, allows for effective load distribution and resistance to loosening, which is essential in maintaining engine performance and safety.

Hexagon Flange Head Cap Screw in Engine Systems

The Hexagon Flange Head Cap Screw (part 4900394) is a versatile fastener that plays a significant role in securing various components within engine systems. Its design allows for efficient torque transfer and secure fastening, making it suitable for a range of applications.

Exhaust Manifold

In the exhaust manifold, the Hexagon Flange Head Cap Screw is used to attach the manifold to the engine block. This ensures a tight seal, preventing exhaust leaks and maintaining efficient exhaust flow. The flange head provides additional surface area for better load distribution, reducing the risk of screw pull-out under thermal stress.

Fan Pilot Spacer

For the fan pilot spacer, this screw is essential in maintaining the correct spacing between the fan and the engine components. Proper spacing ensures optimal airflow and cooling efficiency, which is vital for engine performance and longevity. The flange head also aids in aligning the fan correctly during installation.

Filter

When securing filters, such as oil or air filters, the Hexagon Flange Head Cap Screw ensures a leak-proof seal. This is particularly important for the lubricating oil filter, where any leakage can lead to insufficient lubrication and potential engine damage. The screw’s design allows for easy tightening and removal, facilitating regular maintenance.

Manifold and Exhaust

In both the manifold and exhaust systems, these screws are used to attach various components, ensuring they remain securely in place under high temperatures and vibrations. The flange head offers enhanced stability, which is crucial for components that experience significant thermal expansion and contraction.

Oil Pan and Pan

For the oil pan and other pans within the engine system, the Hexagon Flange Head Cap Screw is used to attach the pan to the engine block. This ensures that the pan remains securely fastened, preventing oil leaks and maintaining the integrity of the lubrication system. The screw’s robust design is well-suited to withstand the pressures and temperatures associated with engine oil.

Lubricating Oil System

Within the lubricating oil system, these screws are often used to secure oil passages and fittings. Ensuring these components are tightly fastened is essential for maintaining consistent oil pressure and flow, which is critical for engine lubrication and cooling.

Conclusion

Overall, the Hexagon Flange Head Cap Screw (part 4900394) is an indispensable component in engine systems, providing reliable fastening solutions across a variety of applications. Its robust design, ease of installation, and resistance to loosening make it a preferred choice for securing critical components in heavy-duty engines.