3927220
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3927220, is a component manufactured by Cummins, a leader in the commercial truck industry. This screw is significant in the maintenance and operation of commercial trucks, providing a reliable fastening solution that ensures the integrity of various truck components.

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 deep into the material ¹. This design allows for efficient torque application and reduces the risk of damage to the fastened material. Within mechanical systems, these screws are used to secure components that require a high degree of stability and resistance to vibration.

Purpose and Role in Truck Operation

This Cummins part plays a role in the operation and maintenance of commercial trucks by securing critical components that are subject to significant stress and vibration. Its application areas within truck mechanics include fastening engine components, securing chassis parts, and attaching body panels. The screw’s design ensures that these components remain firmly in place, contributing to the overall safety and performance of the truck ².

Key Features

The 3927220 features a hexagonal flange head that provides a larger surface area for torque application, enhancing the screw’s resistance to loosening under vibration. It is composed of high-strength materials, ensuring durability and reliability in demanding truck environments. Additionally, the screw’s design includes features that facilitate easy installation and removal, reducing maintenance time and effort ³.

Benefits

Using the 3927220 offers several benefits. Its design provides improved fastening security, making it less susceptible to vibration loosening compared to standard cap screws. The ease of installation and removal also contributes to efficient maintenance procedures, allowing for quick component changes or repairs. Furthermore, the screw’s robust construction ensures long-lasting performance, reducing the need for frequent replacements.

Installation and Usage

Proper installation of the 3927220 involves adhering to specified torque values to ensure optimal performance and longevity. It is important to use the correct tools and techniques to apply the recommended torque, avoiding over-tightening which can lead to damage, or under-tightening which may compromise the fastening security. Best practices include cleaning the fastening area to remove any debris or contaminants that could affect the screw’s grip.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibration and corrosion in exposed environments. Troubleshooting steps may involve re-tightening the screw to the specified torque or replacing it if damage or corrosion is present. Regular maintenance, such as inspecting for signs of wear or corrosion and ensuring proper torque, can prolong the lifespan of the screw and ensure continued reliable performance.

Safety Considerations

When working with Hexagon Flange Head Cap Screws, it is important to follow safety practices to prevent accidents. This includes using the appropriate tools for installation and removal, wearing protective equipment to guard against injury from sharp edges or flying debris, and storing screws in a dry, organized manner to prevent corrosion and ensure easy access during maintenance procedures.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and quality, Cummins has established a strong reputation in the commercial truck industry. The company’s commitment to excellence is evident in its wide range of products, including the 3927220, which exemplifies Cummins’ dedication to providing reliable and high-performance components for the trucking sector.

Cummins Engine Compatibility with Part 3927220

The Hexagon Flange Head Cap Screw, part number 3927220, manufactured by Cummins, is a versatile component that fits into various engine models. This screw is designed to secure components within the engine assembly, ensuring stability and reliability. Below is a detailed description of how this part integrates with different Cummins engines.

Small Bore Engines

• 15N CM2380 M104B
• A1400
• A1700
• A2000
• A2300

In these smaller engines, the 3927220 screw is often used to fasten various components, including covers and housings, ensuring they remain securely in place during operation.

Medium Bore Engines

• B3.3
• C GAS PLUS CM556
• C8.3 G

For these medium-sized engines, the screw is utilized in securing larger components such as intake and exhaust manifolds, as well as other critical engine housings.

Large Bore Engines

• D4.0 CM2620 D103B
• F2.8 CM2620 F135B
• F3.8 CM2620 F137B
• F4.5 CM2620 F139B
• F4.5 CM2620 F141C

In these larger engines, the 3927220 screw is employed in securing heavy-duty components, such as turbocharger housings and other large engine covers, ensuring they can withstand the higher stresses and torques present in larger engines.

Industrial and Marine Engines

• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB5.9G CM2180
• ISB6.7 G CM2180 B118
• ISBE CM2150
• ISBE CM800
• ISBE4 CM850
• ISC CM850

These engines, often used in industrial and marine applications, utilize the 3927220 screw to secure a variety of components, including engine blocks, cylinder heads, and other heavy-duty parts that require robust fastening solutions.

High-Performance Engines

• ISF2.8 CM2220 F117
• ISF2.8 CM2220 F129
• ISF3.8 CM2220 AN

In high-performance engines, the 3927220 screw is used to secure components that must endure extreme conditions, such as high temperatures and pressures. This includes critical parts like turbocharger housings and other high-stress components.

The 3927220 Hexagon Flange Head Cap Screw is a critical component in the assembly and maintenance of Cummins engines, ensuring that various parts remain securely fastened under different operational conditions.

Role of Part 3927220 Hexagon Flange Head Cap Screw in Engine Systems

This part is integral to the assembly and secure functioning of various engine components. Its robust design ensures reliable fastening, which is essential for the operational integrity of the following systems:

Air Control Valve

In the air control valve system, the Hexagon Flange Head Cap Screw secures components that regulate the airflow into the engine, ensuring optimal performance and efficiency.

Air Fuel Mixer

Within the air fuel mixer, this screw plays a role in fastening parts that blend air and fuel in the correct proportions, which is vital for combustion efficiency.

Air Heater Starting Aid

For the air heater starting aid, the screw is used to secure heating elements that facilitate easier engine starts in cold conditions by warming the intake air.

Air Intake Connection

In the air intake connection, it ensures that all components are tightly fastened, preventing air leaks that could affect engine performance.

Air Intake Manifold

The screw is essential in the air intake manifold for securing manifold components, ensuring a smooth and consistent airflow to the cylinders.

Air Starter Plumbing

In air starter plumbing, it secures fittings and connections, ensuring that the air starter system functions without leaks or failures.

Crankcase Breather

For the crankcase breather system, the screw helps in securing the breather components, which are crucial for maintaining proper pressure within the crankcase.

Engine Coolant Vent

In the engine coolant vent system, it ensures that vent components are securely fastened, allowing for safe release of excess pressure from the cooling system.

Exhaust Recirculation

Within the exhaust recirculation system, the screw secures components that recirculate a portion of the exhaust gas back into the intake, reducing emissions.

Front Gear Housing

In the front gear housing, it is used to secure gears and housing components, ensuring smooth operation and durability.

Fuel Control Module

For the fuel control module, the screw secures electronic and mechanical components that regulate fuel delivery to the engine.

Fuel Injection Pump

In the fuel injection pump system, it ensures that pump components are securely fastened, maintaining precise fuel injection timing and pressure.

Fuel Valve Control Module

Within the fuel valve control module, the screw secures valves and control components, ensuring accurate fuel flow regulation.

Gear Fuel Pump

For the gear fuel pump, it secures pump components, ensuring reliable fuel delivery under various engine conditions.

Hardware 12V Valve/Electric Kit

In the hardware 12V valve/electric kit, the screw is used to secure electrical and valve components, ensuring reliable operation of the system.

Injector

Within the injector system, it secures injector components, ensuring precise fuel delivery to each cylinder.

Injector Plumbing

In injector plumbing, the screw secures fittings and connections, ensuring a leak-free fuel delivery system.

Kit

For various kits, the screw is used to secure components, ensuring that all parts are properly assembled and function as intended.

HHP 12V VLV/ELEC

In the HHP 12V valve/electric system, it secures electrical and valve components, ensuring reliable operation.

Multiple Key-Off Kit

Within the multiple key-off kit, the screw secures components that facilitate engine shutdown procedures, ensuring safety and efficiency.

Oil Control Valve

For the oil control valve system, it secures valve components, ensuring proper oil flow and pressure regulation.

Oil Replenishing System

In the oil replenishing system, the screw secures components that maintain optimal oil levels within the engine.

Radiator

Within the radiator system, it ensures that all components are securely fastened, maintaining efficient cooling of the engine.

Service Kit

For service kits, the screw is used to secure various components, ensuring that all parts are properly assembled during maintenance procedures.

Turbocharger Coolant Plumbing

In turbocharger coolant plumbing, it secures fittings and connections, ensuring efficient cooling of the turbocharger.

Turbocharger Plumbing

Within turbocharger plumbing, the screw secures all components, ensuring reliable and efficient turbocharger operation.

Conclusion

The 3927220 Hexagon Flange Head Cap Screw is a vital component in the maintenance and operation of commercial trucks and Cummins engines. Its design and features ensure reliable fastening of critical components, contributing to the overall safety, performance, and longevity of the vehicle. Proper installation, regular maintenance, and adherence to safety practices are essential for maximizing the benefits of this part.