3077840
Socket Head Cap Screw
Cummins®

The 3077840 Socket Head Cap Screw is a specialized fastener produced by Cummins, a leading manufacturer in the commercial truck industry. This screw is designed for use in various applications within commercial trucks, contributing to the secure assembly of components and the overall reliability of the vehicle.

Basic Concepts of Socket Head Cap Screws

A Socket Head Cap Screw is a type of fastener characterized by a hexagonal socket in the head, allowing for efficient tightening and loosening using a hex key. These screws are commonly used in mechanical assemblies to secure components due to their strength, precision fit, and ease of use. They function by providing a strong, durable connection between parts, ensuring that assemblies remain intact under various operational stresses ¹.

Purpose of the 3077840 Socket Head Cap Screw in Trucks

In commercial trucks, the 3077840 Socket Head Cap Screw plays a role in securing critical components and assemblies. Its applications range from engine components to chassis parts, where it ensures that parts remain firmly attached under the demanding conditions of heavy-duty use. The screw’s functional importance lies in its ability to provide a secure, lasting connection that contributes to the truck’s operational efficiency and safety ².

Key Features

The 3077840 Socket Head Cap Screw is distinguished by several key features that enhance its performance and durability. Its design includes a hexagonal socket head that allows for easy and precise tightening. The screw is made from high-quality materials, ensuring resistance to corrosion and wear. The threading is designed to provide a strong grip, minimizing the risk of loosening over time. Additionally, any unique attributes, such as a special coating or treatment, further contribute to its reliability in heavy-duty applications.

Benefits

Using the 3077840 Socket Head Cap Screw offers several benefits. It improves assembly efficiency due to its easy-to-use design, allowing for quick and precise fastening. The screw enhances structural integrity by providing a strong, durable connection between components. Its long-term reliability is particularly valuable in heavy-duty applications, where components are subjected to significant stress and environmental factors.

Installation Guidelines

Proper installation of the 3077840 Socket Head Cap Screw is crucial for ensuring a secure and lasting fastening. The process involves selecting the appropriate hex key for the screw size, aligning the screw with the designated hole, and tightening it to the recommended torque specification. Using the correct tools and following best practices, such as avoiding over-tightening, ensures that the screw performs its intended function effectively.

Troubleshooting and Maintenance

Common issues with Socket Head Cap Screws include loosening due to vibration or corrosion over time. To address these issues, regular inspections are recommended to check for signs of wear or corrosion. If a screw appears loose, it should be re-tightened to the specified torque. In cases of significant corrosion, replacement may be necessary. Maintenance tips include applying a corrosion-resistant coating to the screws and ensuring that all fasteners are checked during routine vehicle inspections.

Cummins: Manufacturer Overview

Cummins Inc. is a globally recognized leader in the design, manufacture, and distribution of engines and related technologies. With a history spanning over a century, Cummins has established a reputation for quality, innovation, and reliability in the commercial truck industry. The company’s extensive product range includes engines, filtration systems, and aftermarket parts, all designed to meet the demanding requirements of heavy-duty applications. Cummins’ commitment to excellence makes it a trusted source for high-quality truck components, including the 3077840 Socket Head Cap Screw.

Cummins Socket Head Cap Screw 3077840 Compatibility

The Cummins Socket Head Cap Screw part number 3077840 is a versatile component designed to fit a variety of Cummins engines. This screw is commonly used in engine assembly and maintenance, providing a secure fastening solution for various parts and components.

ISB Series Engines

The Socket Head Cap Screw 3077840 is compatible with several ISB series engines, including:

• ISB CM2150
• ISB5.9 CM2880 B110
• ISB5.9 CM2880 B140
• ISB5.9 CM2880 B149
• ISB6.7 CM2250
• ISB6.7 CM2350 B101

These engines are known for their robust performance and reliability, often used in heavy-duty applications.

ISM Series Engines

The screw also fits the following ISM series engines:

• ISM CM570/870
• ISM CM876
• ISM11 CM876 SN

These engines are designed for medium-duty applications, providing a balance of power and efficiency.

ISX Series Engines

The Socket Head Cap Screw 3077840 is also suitable for the following ISX series engines:

• ISX CM871
• ISX15 CM2250
• ISX15 CM2350 X101

These engines are typically used in on-highway and vocational applications, known for their high performance and durability.

QSB and QSK Series Engines

This screw is compatible with the following QSB and QSK series engines:

• QSB5.9 CM2880 B115
• QSK19G

These engines are often used in off-road and industrial applications, designed to handle tough conditions.

QSM and QSX Series Engines

The Socket Head Cap Screw 3077840 also fits the following QSM and QSX series engines:

• QSM11 CM876
• QSX15 CM2250
• QSX15 CM2250 ECF
• QSX15 CM2350 X105

These engines are typically used in vocational and on-highway applications, known for their reliability and efficiency.

X Series Engines

Finally, the screw is compatible with the following X series engines:

• X12 CM2350 X119B
• X15 CM2350 X116B
• X15 CM2350 X123B
• X15 CM2450 X134B

These engines are designed for a variety of applications, providing a range of power options.

By ensuring compatibility with these engines, the Socket Head Cap Screw 3077840 plays a crucial role in maintaining the integrity and performance of Cummins engines across various applications.

Role of Part 3077840 Socket Head Cap Screw in Engine Systems

The part 3077840 Socket Head Cap Screw is integral to the secure assembly and operation of various engine components. It ensures the proper fastening of the Arrangement components, which are essential for the structural integrity and alignment of engine parts.

In the Crankcase Breather system, this screw plays a role in maintaining the seal and connection between the breather and the Crankcase. This is important for managing pressure within the crankcase and ensuring efficient ventilation.

The screw is also used in the Valve Cover assembly, where it helps to secure the cover to the engine block, preventing oil leaks and ensuring that the valve train operates in a sealed environment.

For the Breather Adapter and Camshaft Pilot, the Socket Head Cap Screw ensures these components are firmly attached, which is vital for the precise operation of the camshaft and overall engine timing.

In the Front Gear and Valve covers, this screw contributes to the secure mounting of these covers, which protect internal components and maintain the engine’s structural integrity.

The Electronic Control Pressure Valve and Fuel Pump systems also benefit from the secure fastening provided by this screw. It ensures that these components are correctly positioned and operate under the required conditions.

Furthermore, in the Fuel Pump Adapter, Injector, and Inspection Gauge assemblies, the screw’s role is to provide a stable and secure connection, which is essential for accurate fuel delivery and engine performance monitoring.

In the Module Engine Control and Pump Fuel systems, the screw ensures that these critical control units are properly mounted, contributing to the reliable operation of the engine’s fuel and control systems.

Lastly, in the Upfit Kit and various other engine modifications, the Socket Head Cap Screw is used to secure additional components, ensuring that aftermarket upgrades are safely and effectively integrated into the engine system.

Conclusion

The 3077840 Socket Head Cap Screw is a critical component in the assembly and maintenance of Cummins engines. Its design and features ensure secure fastening, durability, and reliability in heavy-duty applications. Proper installation and maintenance are essential to maximize its performance and longevity.