4374074
Twelve Point Cap Screw
Cummins®

This article provides an overview of the Twelve Point Cap Screw, part #4374074, 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 Twelve Point Cap Screw is a type of fastener characterized by its twelve-sided head, which provides a larger contact area and reduces the likelihood of cam-out compared to traditional hex cap screws. It is commonly used in applications requiring high torque and resistance to loosening ¹.

Purpose of the 4374074 Twelve Point Cap Screw

The 4374074 Twelve Point Cap Screw plays a role in securing various components within the truck’s engine and chassis. It ensures that parts remain firmly attached under significant stress and vibration, contributing to the overall reliability and safety of the vehicle ².

Key Features

• Twelve-sided head design for improved torque application and reduced cam-out.
• Manufactured from high-strength materials to withstand substantial loads.
• Precision threading for secure and consistent fastening.
• Compatible with a variety of applications within the truck’s engine and chassis.

Benefits

• Enhanced torque application efficiency due to the twelve-point design.
• Increased resistance to loosening under vibration and dynamic loads.
• Durable construction ensures long-term reliability in demanding environments.
• Versatile use across different truck components ³.

Troubleshooting and Maintenance

Regular inspection of the Twelve Point Cap Screws is recommended to ensure they remain tight and free of damage. Signs of wear, corrosion, or loosening should be addressed promptly to prevent failure. Proper torque specifications should be followed during installation to avoid over-tightening or under-tightening ⁴.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. Known for its commitment to quality and innovation, Cummins serves commercial truck, bus, construction, agricultural, and power generation markets worldwide.

Twelve Point Cap Screw 4374074 Compatibility with Cummins Engines

The Twelve Point Cap Screw part number 4374074, manufactured by Cummins, is a crucial component in several of their engine models. This part is designed to provide secure fastening in various engine applications, ensuring structural integrity and operational efficiency. Below is a detailed description of its compatibility across different engine models:

ISX15 Series

• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

The Twelve Point Cap Screw 4374074 is integral to the ISX15 series engines, providing robust fastening for critical engine components. Its design ensures that the screw can withstand the high torque and stress levels typical in these engines, contributing to their durability and performance.

QSX15 Series

• QSX15 CM2250
• QSX15 CM2250 ECF
• QSX15 CM2350 X105

In the QSX15 series, the Twelve Point Cap Screw 4374074 is used in various applications to secure components that are subject to significant mechanical forces. Its twelve-point design offers better grip and resistance to cam-out, which is essential for maintaining the integrity of the engine’s structure.

X15 Series

• X15 CM2350 X116B
• X15 CM2350 X123B
• X15 CM2450 X134B

The X15 series engines also benefit from the use of the Twelve Point Cap Screw 4374074. This screw is used in applications where high precision and reliability are paramount. Its compatibility with these models ensures that the engine components remain securely fastened, enhancing the overall performance and longevity of the engine.

Each of these engine models relies on the Twelve Point Cap Screw 4374074 for its specific fastening needs, demonstrating the versatility and importance of this component in Cummins’ engine designs.

Role of Part 4374074 Twelve Point Cap Screw in Engine Systems

The part 4374074 Twelve Point Cap Screw is instrumental in securing various components within engine systems, ensuring stability and integrity during operation.

In the block assembly, this cap screw is utilized to fasten the block to the engine frame or other supporting structures. Its twelve-point design allows for enhanced torque application, reducing the risk of cam-out and providing a more secure fit. This is particularly important in the block, where vibrations and thermal expansions are common, necessitating a fastening solution that can withstand dynamic loads.

Within the cylinder assembly, the Twelve Point Cap Screw is employed to secure cylinder heads, gaskets, and other ancillary components. The screw’s design ensures that it can be tightened to precise specifications, maintaining the necessary compression and sealing integrity required for optimal engine performance. This is essential for preventing leaks and ensuring that the combustion process occurs within the designed parameters.

Overall, the part 4374074 Twelve Point Cap Screw plays a significant role in maintaining the structural integrity and operational efficiency of engine components, facilitating reliable and sustained performance.

Conclusion

The Twelve Point Cap Screw, part #4374074, manufactured by Cummins, is a vital component in the engine and chassis of commercial trucks. Its twelve-sided head design, high-strength material, and precision threading provide enhanced torque application, increased resistance to loosening, and durable construction. Regular maintenance and proper installation are essential to ensure the long-term reliability and safety of the vehicle.