3900634
Hexagon Flange Head Cap Screw
Cummins®

The Cummins part 3900634, known as the Hexagon Flange Head Cap Screw, is a critical component in commercial truck maintenance. Its robust design and reliable performance make it essential for various mechanical applications. Cummins ensures this part meets high standards of quality and functionality, establishing it as a staple in the industry ¹.

Basic Concepts

The Hexagon Flange Head Cap Screw is characterized by its hexagonal head and flanged base. The hexagonal head allows for efficient torque application using standard tools, while the flange distributes load and prevents the screw from sinking into the material. This design is crucial for securing components within mechanical systems, ensuring stability and integrity ².

Role in Truck Operation

The 3900634 Hexagon Flange Head Cap Screw is vital for the operation of commercial trucks. It secures critical components and assemblies, ranging from engine parts to chassis components. The screw’s design ensures it can withstand significant stress and vibration, contributing to the overall reliability and safety of the vehicle ³.

Key Features

This Cummins part boasts several key features that enhance its performance. Its hexagonal head design allows for easy and secure tightening using common tools. The flange at the base provides additional bearing surface, distributing the load more evenly and preventing the screw from pulling through the material. Additionally, the screw is typically made from high-strength materials, ensuring durability and resistance to corrosion.

Benefits

Using the 3900634 Hexagon Flange Head Cap Screw offers several advantages. Its design resists loosening over time, even under dynamic conditions, which is crucial for maintaining the integrity of truck components. The ease of installation, thanks to its hexagonal head, reduces the time required for maintenance tasks. Furthermore, its robust construction ensures long-term durability, minimizing the need for frequent replacements.

Installation Process

Proper installation of the 3900634 Hexagon Flange Head Cap Screw is crucial for optimal performance. Begin by ensuring the mating surfaces are clean and free of debris. Use a torque wrench to apply the recommended torque specifications to avoid over-tightening, which can damage the screw or the material it is fastening. It is also important to check for proper alignment to ensure the flange sits flush against the surface, maximizing the load-bearing capacity.

Common Applications

The 3900634 Hexagon Flange Head Cap Screw is versatile and finds applications in various parts of commercial trucks. It is commonly used in engine assemblies, chassis components, and other critical areas where secure fastening is required. Its widespread use underscores its importance in maintaining the structural integrity and performance of commercial vehicles.

Troubleshooting and Maintenance

Regular inspection of the 3900634 Hexagon Flange Head Cap Screw can help identify potential issues such as corrosion, loosening, or damage. If any signs of wear or failure are detected, the screw should be replaced promptly to prevent further complications. Maintenance practices such as keeping the screw and surrounding areas clean, and periodically checking torque levels, can prolong its lifespan and ensure continued reliable performance.

Safety Considerations

When working with the 3900634 Hexagon Flange Head Cap Screw, it is important to follow safety guidelines to prevent accidents. Always use the appropriate tools and ensure they are in good condition. Wear personal protective equipment, such as gloves and safety glasses, to protect against potential injuries. Additionally, ensure that the work area is well-lit and free of hazards to maintain a safe working environment.

Cummins Overview

Cummins is a renowned manufacturer with a long-standing reputation in the industry for producing high-quality automotive and heavy-duty truck parts. The company is committed to innovation and excellence, ensuring that its products meet the demanding requirements of commercial applications. Cummins’ dedication to quality and customer satisfaction has established it as a trusted name in the field of automotive manufacturing.

Cummins Engine Compatibility with Hexagon Flange Head Cap Screw Part 3900634

The Cummins Hexagon Flange Head Cap Screw part number 3900634 is a versatile component designed to fit a variety of Cummins engines. This screw is engineered to provide a secure and reliable fastening solution, ensuring the integrity of engine components during assembly and operation.

15N CM2380 M104B, 4B3.9, 6B5.9, 6C8.3, B3.3, B4.5

The part 3900634 is compatible with the 15N CM2380 M104B engine, as well as the 4B3.9, 6B5.9, 6C8.3, B3.3, and B4.5 engines. This screw is often used in applications where a strong and durable fastening method is required, such as securing engine covers or other structural components.

B5.9 G, B5.9 GAS PLUS CM556, B6.7 CM2350 B129B, B6.7 CM2670 B153B, B6.7 CM2670 B164C, B6.7 G CMOH6.0 B125, B6.7S

The Hexagon Flange Head Cap Screw part 3900634 is also suitable for the B5.9 G, B5.9 GAS PLUS CM556, B6.7 CM2350 B129B, B6.7 CM2670 B153B, B6.7 CM2670 B164C, B6.7 G CMOH6.0 B125, and B6.7S engines. These engines benefit from the screw’s ability to withstand high torque and provide a tight seal, which is crucial for maintaining engine performance and longevity.

C GAS PLUS CM556, C8.3 G, F3.8 CM2350 F128C, F3.8 CM2620 F137B, F4.5 CM2620 F139B, F4.5 CM2620 F141C

The part 3900634 is also designed to fit the C GAS PLUS CM556, C8.3 G, F3.8 CM2350 F128C, F3.8 CM2620 F137B, F4.5 CM2620 F139B, and F4.5 CM2620 F141C engines. These engines often require precise and reliable fastening solutions, and the screw’s hexagonal flange head provides a broad surface area for better torque distribution, ensuring a secure fit.

G8.3, G8.3 CM558, GTA8.3 CM558

The Hexagon Flange Head Cap Screw part 3900634 is compatible with the G8.3, G8.3 CM558, and GTA8.3 CM558 engines. These engines benefit from the screw’s ability to maintain a tight and secure connection, which is essential for the proper functioning of engine components.

ISB CM2150, ISB CM550, ISB CM850

Lastly, the part 3900634 is suitable for the ISB CM2150, ISB CM550, and ISB CM850 engines. These engines require robust fastening solutions to ensure that all components are securely held in place, and the screw’s design provides the necessary strength and durability for these applications.

Role of Part 3900634 Hexagon Flange Head Cap Screw in Engine Systems

The part 3900634 Hexagon Flange Head Cap Screw is instrumental in securing and maintaining the integrity of various engine components. Its robust design ensures reliable fastening in high-stress environments.

Air Compressor

In air compressor systems, this screw is used to fasten the compressor housing to its mounting bracket, ensuring stability and preventing vibrations that could lead to component failure.

Alternator Location and Mounting

For alternators, the screw plays a key role in securing the alternator to its designated location on the engine block. This ensures consistent electrical output and reduces the risk of electrical issues due to loose connections.

Alternator Support and Mounting

In alternator support systems, the screw is employed to attach support brackets, providing additional stability to the alternator and enhancing its durability under operational stress.

Camshaft Mounting

Within camshaft assemblies, the screw is utilized to secure the camshaft to the engine block, ensuring precise alignment and smooth operation of the valve train.

Compressor Coolant Plumbing

In compressor coolant systems, the screw is used to fasten plumbing components, ensuring a secure and leak-free connection that maintains efficient coolant flow.

Crankshaft Pulley

For crankshaft pulleys, the screw is critical in attaching the pulley to the crankshaft, ensuring that the pulley operates smoothly and transfers power effectively.

Electrical Accessories

In the mounting of electrical accessories, the screw provides a sturdy attachment point, ensuring that accessories remain securely in place despite engine vibrations.

Exhaust Manifold

The screw is used in exhaust manifold assemblies to secure the manifold to the engine block, ensuring a tight seal that prevents exhaust leaks.

Exhaust Recirculation Air Plumbing

In exhaust recirculation systems, the screw fastens plumbing components, ensuring a secure connection that maintains efficient recirculation of exhaust gases.

Fan Pilot Spacer

For fan pilot spacers, the screw ensures that the spacer is correctly positioned between the fan and the engine, maintaining proper clearance and alignment.

Front Drive Adapter

In front drive adapter systems, the screw is used to secure the adapter to the engine, ensuring a stable connection that transmits power efficiently.

Front Gear Housing

Within front gear housings, the screw fastens the housing to the engine, providing structural integrity and preventing misalignment of gears.

Fuel Control Module

For fuel control modules, the screw secures the module to its mounting location, ensuring stable operation and accurate fuel delivery.

Fuel Pump Drive

In fuel pump drive systems, the screw is used to attach the drive mechanism to the engine, ensuring reliable operation of the fuel pump.

Guard Package

The screw is employed in guard package assemblies to secure guards and shields, protecting sensitive engine components from debris and damage.

Heat Exchanger

In heat exchanger systems, the screw fastens the exchanger to its mounting location, ensuring efficient heat transfer and stable operation.

Intake Connection Mounting

For intake connection mounting, the screw secures the intake system to the engine, ensuring a tight seal and efficient airflow.

Intake Manifold Mounting

In intake manifold systems, the screw is used to attach the manifold to the engine block, ensuring a secure and leak-free connection.

Long Block

Within long block assemblies, the screw is utilized to secure various components, ensuring structural integrity and reliable operation of the engine.

Oil Pan Mounting

For oil pan assemblies, the screw fastens the pan to the engine block, ensuring a secure seal that prevents oil leaks.

Oil Pan Top Level Assembly Adapter

In oil pan top-level assembly adapters, the screw secures the adapter to the pan, ensuring accurate oil level measurement and maintenance.

Rear Gear Train Accessory Drive

Within rear gear train accessory drive systems, the screw is used to attach drive components, ensuring efficient power transmission.

Refrigerant Compressor Mounting

In refrigerant compressor systems, the screw secures the compressor to its mounting location, ensuring stable operation and efficient cooling.

Thermostat Housing

For thermostat housings, the screw fastens the housing to the engine, ensuring a secure seal that maintains proper coolant flow and engine temperature regulation.

Conclusion

The 3900634 Hexagon Flange Head Cap Screw is a vital component in the maintenance and operation of commercial trucks. Its robust design, ease of installation, and reliable performance make it indispensable for securing various engine components and ensuring the overall integrity and safety of the vehicle. Regular maintenance and proper installation are key to maximizing its lifespan and effectiveness.