3907860
Hexagon Flange Head Cap Screw
Cummins®

This article provides an overview of the Hexagon Flange Head Cap Screw, part number 3907860, manufactured by Cummins. It covers the basic concepts, purpose, key features, benefits, and maintenance suggestions for this component, which is used in commercial trucks.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by a hexagonal head and a flange that provides additional surface area for torque application. It is commonly used in applications requiring secure and durable fastening ¹.

Purpose and Function

The 3907860 Hexagon Flange Head Cap Screw plays a role in securing various components within a commercial truck. It is designed to withstand high levels of stress and provide a reliable connection between parts, ensuring the structural integrity and performance of the truck ².

Key Features

• Hexagonal head for easy tightening with standard tools.
• Flange provides additional torque application surface.
• High-strength material construction for durability.
• Designed for use in demanding environments typical of commercial trucks.

Benefits

• Enhanced torque application due to the flange design.
• Increased resistance to loosening under vibration and stress.
• Reliable performance in harsh operating conditions.
• Long-lasting durability, reducing the need for frequent replacements.

Troubleshooting and Maintenance

Regular inspection of the Hexagon Flange Head Cap Screw is recommended to ensure it remains secure and undamaged. Signs of wear or loosening should be addressed promptly to prevent potential failures. Proper torque specifications should be followed during installation to avoid over-tightening or under-tightening ³.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. The company is known for its commitment to quality and innovation in the automotive and industrial sectors.

Compatibility with Cummins Engines

The Cummins Hexagon Flange Head Cap Screw part number 3907860 is a versatile component designed to fit a variety of Cummins engines. This screw is integral in securing various engine parts, ensuring the integrity and functionality of the engine assembly.

B Series Engines

• B3.9, B4.5, B5.9, B5.9 CM2670 B166C, B5.9 G, B5.9 GAS PLUS CM556, B6.7 CM2670 B153B, B6.7 G CMOH6.0 B125

  The B series engines, ranging from B3.9 to B6.7, benefit from the 3907860 screw in securing critical components. This screw is often used in applications where a strong, reliable fastening is required, such as in the cylinder head or other engine blocks.

C Series Engines

• C GAS PLUS CM556, C8.3 G

  The C series engines, including the C GAS PLUS CM556 and C8.3 G, also utilize the 3907860 screw. These engines, known for their robust design, require a reliable fastening solution to maintain the structural integrity of the engine.

G Series Engines

• G5.9, G8.3, G8.3 CM558, GTA8.3 CM558

  The G series engines, such as the G5.9, G8.3, and GTA8.3 CM558, incorporate the 3907860 screw in several applications. This screw is essential for securing various engine parts, ensuring that the engine operates smoothly and efficiently.

ISB Series Engines

• ISB (Chrysler), ISB CM2150, ISB CM550, ISB CM850, ISB/ISD6.7 CM2150 SN, ISB5.9G CM2180, ISB6.7 CM2250, ISB6.7 CM2350 B101, ISB6.7 G CM2180 B118

  The ISB series engines, which include a wide range of models such as ISB CM2150, ISB CM550, and ISB6.7 CM2350 B101, all utilize the 3907860 screw. This screw is critical in securing various components within these engines, ensuring that they perform optimally under different operating conditions.

The 3907860 screw’s compatibility across these diverse engine models highlights its importance in maintaining the structural integrity and performance of Cummins engines.

Role of Part 3907860 Hexagon Flange Head Cap Screw in Engine Systems

The Part 3907860 Hexagon Flange Head Cap Screw is integral in securing various components within engine systems, ensuring stability and proper function. Its application spans across multiple assemblies and subsystems, contributing to the overall integrity and performance of the engine.

Assembly Lubricating Oil Cooler Cover

In the assembly of the lubricating oil cooler cover, the Hexagon Flange Head Cap Screw plays a significant role. It secures the cover to the cooler, ensuring a tight seal that prevents oil leaks and maintains the efficiency of the cooling process. This is essential for regulating the temperature of the engine oil, which is vital for engine longevity and performance.

Cooler and Heat Exchanger

When integrating the cooler with the heat exchanger, the Hexagon Flange Head Cap Screw ensures that these components are firmly attached. This secure attachment is necessary for optimal heat transfer, which is crucial for maintaining the engine oil at an appropriate temperature. Efficient heat exchange directly impacts the engine’s operational efficiency and durability.

Oil Filter and Full Flow Oil System

In the oil filter and full flow oil system, the screw is used to mount the oil filter to the engine block or filter head. This secure mounting is essential for the filter to effectively remove contaminants from the oil, ensuring that the engine components are well-lubricated and protected from wear.

Oil Level Gauge and Oil Pan

The Hexagon Flange Head Cap Screw is also employed in attaching the oil level gauge to the oil pan. Accurate measurement of oil levels is critical for maintaining proper lubrication within the engine. Additionally, it secures the oil pan to the engine block, ensuring that the pan remains stable and does not shift during operation, which could lead to oil leaks.

Turbocharger Plumbing and Keel Cooler

In turbocharger plumbing and keel cooler installations, the screw ensures that all connections are tight and secure. This is important for maintaining the integrity of the plumbing system, preventing leaks, and ensuring that the turbocharger and keel cooler operate efficiently. Proper plumbing is essential for the turbocharger to function correctly, enhancing engine performance.

Support and Front Engine Mounts

The screw is also utilized in support and front engine mounts. These mounts need to be securely fastened to withstand the vibrations and stresses generated during engine operation. Stable mounting is essential for the engine’s alignment and overall performance.

Lubricating Oil Filter Head and Kit

In the lubricating oil filter head and kit, the Hexagon Flange Head Cap Screw ensures that all components are correctly assembled and securely fastened. This is vital for the filter’s effectiveness in cleaning the oil and for the overall reliability of the lubrication system.

Service and Short Engine Kit

Within service and short engine kits, the screw is used to reassemble and secure various engine components after maintenance or repair. Proper reassembly is essential for restoring the engine to its optimal working condition.

Guard and Pan Oil Mounting

The screw also plays a role in securing guards and pan oil mountings. These components protect sensitive engine parts and ensure that the oil pan remains in place, contributing to the engine’s safety and operational stability.

Conclusion

In summary, the Part 3907860 Hexagon Flange Head Cap Screw is a versatile fastener that ensures the secure attachment of various engine components, contributing to the engine’s efficiency, durability, and overall performance.

References