3697974
Hexagon Flange Head Cap Screw
Cummins®

The Cummins Hexagon Flange Head Cap Screw, part number 3697974, is a specialized fastener designed for use in heavy-duty trucks. This part is integral to the structural integrity and operational efficiency of various truck components. Cummins, a renowned name in the automotive and heavy-duty truck industry, ensures that this part meets stringent quality and performance standards ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is characterized by its hexagonal head and a flange beneath the head. The hexagonal head allows for efficient tightening and loosening using a wrench or socket, while the flange provides a larger bearing surface that distributes the load more evenly, reducing the risk of the screw sinking into the material. This design is particularly beneficial in mechanical systems where stability and resistance to loosening are paramount ².

Purpose and Role in Truck Operation

The 3697974 Hexagon Flange Head Cap Screw plays a significant role in the operation of heavy-duty trucks. It is used in various applications, including securing engine components, transmission parts, and chassis assemblies. Its design ensures that critical components remain firmly attached, contributing to the overall reliability and safety of the truck ³.

Key Features

The 3697974 Hexagon Flange Head Cap Screw features a hexagonal head that facilitates easy and precise tightening. The flange beneath the head enhances the screw’s stability by providing a larger contact area. Additionally, the screw is crafted from high-strength materials, ensuring durability and resistance to wear and corrosion in demanding environments.

Benefits

The benefits of using the 3697974 Hexagon Flange Head Cap Screw include enhanced stability due to its flange design, which prevents the screw from sinking into the material. Its hexagonal head allows for efficient and secure fastening. The material properties ensure durability and resistance to loosening, making it suitable for heavy-duty applications where reliability is crucial.

Installation and Usage

Proper installation of the 3697974 Hexagon Flange Head Cap Screw involves using the correct torque specifications to ensure the screw is tightened to the manufacturer’s recommended levels. This prevents over-tightening, which can damage the screw or the material, and under-tightening, which can lead to loosening. It is also important to use the appropriate tools to avoid damaging the hexagonal head.

Troubleshooting and Maintenance

Common issues with the 3697974 Hexagon Flange Head Cap Screw include loosening and corrosion. Regular inspection and maintenance can help identify these issues early. If loosening is detected, the screw should be re-tightened to the specified torque. Corrosion can be mitigated by ensuring the screw is made from corrosion-resistant materials and by applying appropriate coatings or treatments.

Manufacturer - Cummins

Cummins is a leading manufacturer in the automotive and heavy-duty truck industry, known for its commitment to quality and innovation. With a rich history and a strong reputation, Cummins ensures that its products, including the 3697974 Hexagon Flange Head Cap Screw, meet the highest standards of performance and reliability. Their dedication to continuous improvement and customer satisfaction underscores their position as a trusted provider in the industry.

Hexagon Flange Head Cap Screw 3697974 in Cummins Engines

The Cummins Hexagon Flange Head Cap Screw part number 3697974 is a critical component used in various Cummins engines. This screw is designed to provide a secure fastening solution, ensuring that engine components remain tightly secured during operation. Here is a detailed look at how this part fits into different Cummins engines:

ISG11 CM2880 G108 and ISG12 CM2880 G107

Both the ISG11 CM2880 G108 and ISG12 CM2880 G107 engines utilize the 3697974 screw for securing various engine components. This screw is often used in applications where a strong and reliable fastening method is required, such as attaching engine covers or other structural parts.

ISG12 G CMOH6.0 G111

In the ISG12 G CMOH6.0 G111 engine, the 3697974 screw plays a crucial role in maintaining the integrity of the engine assembly. Its flange head design ensures a broad bearing surface, which is essential for distributing the load evenly and preventing damage to the engine components.

QSG12/X12 CM2350 G110

The QSG12/X12 CM2350 G110 engine also incorporates the 3697974 screw in its construction. This screw is typically used in areas where high torque and vibration resistance are necessary, ensuring that the engine components remain securely fastened under demanding conditions.

X11 CM2670 X126B and X12 CM2350 X119B

Both the X11 CM2670 X126B and X12 CM2350 X119B engines benefit from the use of the 3697974 screw. This part is often used in the assembly of engine covers and other structural elements, providing a reliable fastening solution that can withstand the operational stresses of these engines.

X12 CM2670 X121B and X13 CM2670 X122B

The X12 CM2670 X121B and X13 CM2670 X122B engines also integrate the 3697974 screw into their design. This screw is essential for securing various components, ensuring that the engine maintains its structural integrity and operates efficiently.

In summary, the Cummins Hexagon Flange Head Cap Screw part number 3697974 is a versatile and essential component in multiple Cummins engine models. Its design and functionality make it suitable for a variety of applications within these engines, providing the necessary strength and reliability for secure fastening.

Hexagon Flange Head Cap Screw in Engine Systems

The Hexagon Flange Head Cap Screw, part 3697974, is instrumental in the assembly and maintenance of various engine components. Its design and functionality make it suitable for securing and aligning parts that are subject to high stress and vibration.

Block Assembly

In the context of engine blocks, the Hexagon Flange Head Cap Screw is often used to fasten components that require a secure and stable connection. The flange head provides additional surface area, which helps distribute the load more evenly across the block material. This is particularly important in areas where the block interfaces with other components, such as the cylinder head or sump. The screw’s hexagonal shape ensures that it can be tightened with precision, minimizing the risk of over-tightening or stripping, which could compromise the integrity of the block.

Cylinder Alignment

When it comes to cylinder alignment, the Hexagon Flange Head Cap Screw plays a significant role in maintaining the precise positioning of cylinders within the engine block. The flange head design allows for better torque application, ensuring that the cylinders are held firmly in place. This is essential for the proper functioning of the pistons, as any misalignment can lead to increased wear and reduced engine efficiency. The screw’s robust construction also helps in withstanding the high temperatures and pressures generated during engine operation, making it a reliable choice for critical applications.

Conclusion

The Cummins Hexagon Flange Head Cap Screw, part number 3697974, is a critical component in the operation and maintenance of heavy-duty trucks and Cummins engines. Its design, featuring a hexagonal head and flange, ensures secure fastening and stability under demanding conditions. Proper installation and maintenance are essential to maximize the benefits of this part, ensuring the reliability and efficiency of the truck and engine systems.