137795
Hexagon Head Cap Screw
Cummins®

Introduction to Hexagon Head Cap Screws

Hexagon head cap screws, commonly known as hex bolts, are essential fasteners across various industries, especially in commercial trucks. These screws feature a hexagonal socket head, enabling torque application with a wrench or socket. This design ensures a secure and reliable connection, making them ideal for high-stress applications ¹.

The Role of Hexagon Head Cap Screws in Truck Engines

In truck engines, hexagon head cap screws are crucial for assembling and maintaining critical components. They secure engine blocks, cylinder heads, and other vital parts. The robust construction of these screws ensures components remain firmly attached, even under the demanding conditions of commercial truck operations ².

Purpose and Functionality of Cummins Part #137795

The Cummins part #137795 hexagon head cap screw is engineered for use in Cummins engines. This screw is designed to withstand the high temperatures, pressures, and vibrations inherent in heavy-duty truck engines. Its primary role is to provide a robust and reliable connection between engine components, ensuring optimal performance and durability ³.

Importance of Hexagon Head Cap Screws in Truck Operations

The reliability of hexagon head cap screws is paramount in commercial truck operations. These screws are fundamental to the structural integrity and operational efficiency of the vehicle. Proper fastening of engine components prevents mechanical failures, reduces maintenance requirements, and enhances overall safety on the road.

Troubleshooting and Maintenance Tips

Consistent inspection and maintenance of hexagon head cap screws are crucial to prevent issues such as loosening, stripping, or failure. Here are some troubleshooting and maintenance tips:

1. Regular Inspections: Routinely check the tightness of hexagon head cap screws using a torque wrench. Ensure they are correctly tightened to the manufacturer’s specifications.

2. Identifying Loose Screws: Inspect for signs of loosening, such as gaps between the screw head and the fastened component. Tighten or replace as necessary.

3. Preventing Stripped Threads: Avoid over-tightening screws, which can lead to stripped threads. Use the appropriate size and grade of wrench or socket to apply the correct torque.

4. Material Considerations: Ensure that the screws are made from materials suitable for the operating environment. For high-temperature applications, consider using heat-resistant alloys.

Cummins: A Leader in Engine Manufacturing

Cummins is a renowned manufacturer of engines and related components for commercial trucks. With a commitment to quality and innovation, Cummins products are engineered to meet the stringent demands of heavy-duty applications. The Cummins part #137795 hexagon head cap screw exemplifies the company’s dedication to delivering reliable and durable components for the commercial truck industry.

Expert Insights and Best Practices

As an expert in commercial truck parts, it is essential to understand the critical role that hexagon head cap screws play in engine assembly and maintenance. Proper utilization and maintenance of these screws can significantly influence the performance and reliability of a truck engine. By adhering to best practices and employing high-quality components like the Cummins part #137795, engineers, mechanics, and fleet operators can ensure their vehicles operate at peak efficiency.

Hexagon Head Cap Screw 137795 in Cummins Engines

The Cummins Hexagon Head Cap Screw part number 137795 is a versatile component used across various Cummins engine models. This screw is integral to the assembly and maintenance of these engines, ensuring secure fastening of various parts.

Models Featuring the 137795 Screw

4B3.9, 6B5.9, G8.3, G855, G855 CM558, GTA855 CM558 (CM2358) G101

These engines, primarily used in heavy-duty applications, benefit from the reliability of the 137795 screw in securing critical components. The screw’s design ensures that parts remain tightly fastened, which is crucial for the performance and longevity of these engines.

K19, K38, K50

The K-series engines, known for their robustness and efficiency, incorporate the 137795 screw in several key areas. Its use in these models highlights its importance in maintaining structural integrity and operational efficiency.

N14 CELECT, N14 G, N14 MECHANICAL, NH/NT 855

The N14 series engines, widely used in both agricultural and industrial applications, rely on the 137795 screw for various assembly tasks. This screw’s precision and strength are essential for the reliable operation of these engines.

QSB5.9 CM850, QSK19 CM2350 K105, QSK19 CM2350 K114, QSK19 CM2350 K144G, QSK19 CM500, QSK19 CM850 MCRS, QSK38 CM2150 MCRS, QSK38 CM850 MCRS, QSK50 CM2150 K107, QSK50 CM2150 MCRS, QSK50 CM2350 K108, QSNT14 CM876 N102

The QSK and QS series engines, known for their high performance and reliability, also utilize the 137795 screw. This screw is crucial in securing various components within these engines, ensuring they operate smoothly and efficiently. The use of this screw across multiple models within the QSK and QS series underscores its versatility and importance in Cummins engine assemblies.

Role of Part 137795 Hexagon Head Cap Screw in Engine Systems

The Part 137795 Hexagon Head Cap Screw is integral to the assembly and securement of various engine components, ensuring the structural integrity and operational efficiency of the engine system.

In the aftercooler water plumbing, this screw is used to fasten fittings and connections, maintaining a secure seal that prevents leaks and ensures efficient cooling of the compressed air.

For the air crossover connection, it plays a role in securing the crossover pipe, which is essential for balanced air distribution between cylinders.

In the air silencer manifold, the screw is employed to attach the manifold to the engine block, reducing noise and vibrations from the air intake system.

The cam follower cover relies on this screw for secure attachment, protecting the cam followers and ensuring smooth operation of the valve train.

For corrosion resistor mounting, the screw is utilized to attach corrosion-resistant components, safeguarding the engine from environmental damage.

In the engine monitoring system, it is used to mount sensors and components, ensuring accurate data collection and system performance monitoring.

The engine oil cooler assembly uses this screw to secure the cooler to the engine, facilitating efficient oil temperature regulation.

In the fuel supply tube, it ensures the secure attachment of the tube, maintaining a consistent fuel supply to the engine.

For the lub oil filter cooler, the screw is crucial for mounting the cooler, which is vital for maintaining the lubrication system’s efficiency.

In the lubricating oil baffle, it is used to secure the baffle, which helps in managing oil flow within the engine.

The lubricating oil cooler and lubricating oil cooler kit both utilize this screw for secure installation, ensuring optimal cooling of the lubricating oil.

For the lubricating oil cooler support, the screw is essential for attaching the support structure, which holds the cooler in place.

In the mounting fan and spacer, it is used to secure the fan and spacer, ensuring proper airflow and cooling.

The oil cooler assembly relies on this screw for secure attachment, which is critical for maintaining oil temperature within operational limits.

In the oil level gauge, it is used to mount the gauge, allowing for accurate monitoring of oil levels.

For the oil replenishing system, the screw ensures the secure attachment of components, facilitating efficient oil replenishment.

In the sump pump and sump pump plumbing, it is used to secure the pump and plumbing connections, ensuring effective oil drainage and circulation.

The throttle cable bracket utilizes this screw for secure attachment, which is essential for precise throttle control.

In the throttle control mounting, it ensures the secure attachment of the throttle control components.

For the torque converter oil cooler, the screw is used to mount the cooler, which is vital for maintaining the torque converter’s operating temperature.

In turbocharger mounting, it secures the turbocharger to the engine, ensuring stable and efficient operation.

The valve cover relies on this screw for secure attachment, protecting the valve train components.

Finally, in the vernier throttle mounting, it is used to securely mount the vernier throttle, allowing for fine adjustments in throttle position.

Conclusion

The Cummins part #137795 hexagon head cap screw is a critical component in the assembly and maintenance of Cummins engines. Its robust design and reliable performance make it indispensable for securing various engine components, ensuring the structural integrity and operational efficiency of the engine system. Proper maintenance and utilization of this screw are essential for the optimal performance and longevity of Cummins engines.