3251767
Hexagon Head Cap Screw
Cummins®

The Cummins Hexagon Head Cap Screw, part number 3251767, is a critical component in the maintenance and operation of commercial trucks. Cummins, a prominent manufacturer in the commercial truck industry, produces a variety of parts designed to enhance the performance and reliability of truck systems. This part plays a significant role in securing various truck components, ensuring stability and durability.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is a fastener characterized by its hexagonal head, which allows for efficient tightening and loosening using a wrench or socket. These screws are widely used in mechanical assemblies to secure components together. Their design ensures a strong grip and resistance to loosening, making them suitable for applications where stability and durability are required ¹.

Purpose of the 3251767 Hexagon Head Cap Screw in Truck Operation

This Cummins part is utilized in various applications within commercial trucks. It secures components in engine assemblies, transmission systems, and other critical areas where reliable fastening is necessary. By providing a stable connection, this screw contributes to the overall integrity and performance of the truck’s mechanical systems ².

Key Features of the 3251767 Hexagon Head Cap Screw

The 3251767 Hexagon Head Cap Screw is designed with specific characteristics to enhance its performance. Its hexagonal head shape allows for easy engagement with tools, ensuring precise installation. The screw features a particular threading type that provides a strong grip on mating components. Additionally, it may include special coatings or treatments to improve resistance to corrosion and wear, extending its service life in demanding environments ³.

Benefits of Using the 3251767 Hexagon Head Cap Screw

Using this part offers several advantages. It provides improved fastening security, ensuring that components remain firmly in place under various operating conditions. The screw’s design resists vibration loosening, maintaining a stable connection over time. Additionally, its compatibility with standard tools allows for easy installation and removal, facilitating maintenance procedures ⁴.

Installation and Usage Guidelines

Proper installation of the 3251767 Hexagon Head Cap Screw is crucial for optimal performance. Follow these steps for installation:

1. Ensure the mating surfaces are clean and free of debris.
2. Align the screw with the designated hole.
3. Use a wrench or socket to tighten the screw to the specified torque, ensuring a secure fit without over-tightening.
4. Verify the connection is stable and the screw is properly seated.

Troubleshooting and Maintenance Tips

Common issues with the 3251767 Hexagon Head Cap Screw may include corrosion or stripping. To prevent these problems:

• Regularly inspect the screw and surrounding components for signs of wear or damage.
• Apply a corrosion-resistant coating if operating in harsh environments.
• Use the correct tools and torque specifications during installation to avoid over-tightening or damage ⁵.

Cummins: Manufacturer Overview

Cummins Inc. is a leading manufacturer in the commercial truck industry, known for its wide range of high-quality products. With a history of innovation and reliability, Cummins provides components that meet the demanding requirements of commercial truck operations. The company’s reputation for quality ensures that parts like the 3251767 Hexagon Head Cap Screw are designed to deliver consistent performance and durability.

Hexagon Head Cap Screw 3251767 in Cummins Engines

The Cummins Hexagon Head Cap Screw part number 3251767 is a versatile component used across various Cummins engine models. This screw is integral to the assembly and maintenance of several engine types, ensuring secure fastening and reliable performance.

ISM Series Engines

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

The ISM series engines, including the ISM CM570, ISM CM570/870, ISM CM876, and ISM11 CM876 SN, utilize the 3251767 screw in various applications. This screw is critical for maintaining the structural integrity of the engine by securing different components together, ensuring that the engine operates smoothly and efficiently.

L10 Engines

• L10 CELECT
• L10 MECHANICAL

In the L10 engine lineup, both the L10 CELECT and L10 MECHANICAL models incorporate the 3251767 screw. This screw is essential for fastening parts that require precise alignment and secure attachment, contributing to the overall durability and performance of the engine.

M11 Engines

• M11 CELECT PLUS
• M11 MECHANICAL

The M11 CELECT PLUS and M11 MECHANICAL engines also feature the 3251767 screw. This component is used in various critical assemblies within these engines, ensuring that all parts are firmly attached and properly aligned, which is crucial for the engine’s operational efficiency and longevity.

QSM11 Engine

• QSM11 CM570

The QSM11 CM570 engine incorporates the 3251767 screw in its design. This screw is used in several key areas of the engine, providing the necessary fastening strength and reliability to maintain the engine’s structural integrity.

V903 Engine

• V903

The V903 engine also utilizes the 3251767 screw. This component is essential for securing various parts within the engine, ensuring that the engine operates with the required precision and reliability.

The consistent use of the 3251767 Hexagon Head Cap Screw across these diverse engine models highlights its importance in maintaining the structural and functional integrity of Cummins engines.

Role of Part 3251767 Hexagon Head Cap Screw in Engine Systems

In the intricate assembly of engine systems, the 3251767 Hexagon Head Cap Screw serves as a fundamental fastening component, ensuring the secure attachment of various parts. Its application spans across multiple components, each playing a distinct role in the overall functionality and efficiency of the engine.

Accessories

The 3251767 screw is often utilized in the attachment of engine accessories. These accessories, which may include sensors, gauges, and control units, require a reliable fastening solution to ensure they remain securely in place during operation. The screw’s hexagonal head allows for easy tightening and loosening, facilitating maintenance and adjustments.

Auxiliary Pump

In systems featuring an auxiliary pump, the 3251767 screw is employed to secure the pump to its mounting bracket. This ensures the pump operates efficiently without the risk of detachment or misalignment, which could lead to performance issues or damage.

Arrangement and Lifting

During the arrangement and lifting of engine components, the 3251767 screw plays a key role in securing parts in their designated positions. Whether it’s attaching a lifting bracket or ensuring components are correctly aligned, this screw provides the necessary stability.

Damper and Vibration Control

In applications involving dampers and vibration control mechanisms, the 3251767 screw is used to fasten these components to the engine frame. This helps in maintaining the integrity of the vibration dampening system, ensuring smooth operation and reducing wear on other engine parts.

Flywheel

The attachment of the flywheel to the engine crankshaft often involves the use of the 3251767 screw. This ensures the flywheel is securely fastened, allowing for efficient energy transfer and smooth engine operation.

Mounting

Various engine components require secure mounting to the engine block or frame. The 3251767 screw is commonly used in these applications to provide a strong and reliable connection, ensuring components remain in place under operational stresses.

Air Compressor

In systems with an air compressor, the 3251767 screw is used to attach the compressor to its mounting plate. This ensures the compressor operates efficiently and remains securely in place, contributing to the overall performance of the engine system.

Mounting Plate

The screw is also integral in securing mounting plates to the engine block. These plates often serve as a base for other components, and the reliable fastening provided by the 3251767 screw is essential for the structural integrity of the engine assembly.

Radiator and Resistor

In cooling systems, the 3251767 screw is used to attach the radiator and resistor to their respective mounts. This ensures these components are securely positioned, allowing for efficient heat dissipation and maintaining optimal engine temperature.

Corrosion and Water Outlet Mounting

To combat corrosion and ensure the longevity of engine components, the 3251767 screw is used in water outlet mountings. This helps in maintaining a secure and leak-free connection, crucial for the efficient circulation of coolant throughout the engine system.

Conclusion

The Cummins Hexagon Head Cap Screw, part number 3251767, is a vital component in the maintenance and operation of commercial trucks. Its robust design, ease of use, and compatibility with various engine systems make it an indispensable part for ensuring the reliability and performance of truck engines. Proper installation and maintenance of this screw are essential for the longevity and efficiency of the engine systems it supports.