3074354
Twelve Point Cap Screw
Cummins®

The Twelve Point Cap Screw, Part #3074354, manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. Its design and functionality are tailored to meet the demanding requirements of heavy-duty applications, ensuring reliable performance and durability in various truck components.

Basic Concepts of Twelve Point Cap Screws

A Twelve Point Cap Screw is a type of fastener characterized by its hexagonal socket head, which provides a larger contact area compared to traditional hex-head screws. This design allows for higher torque application without the risk of cam-out, making it suitable for applications where secure fastening is required ¹. In the automotive industry, these screws are commonly used in engine components, chassis assemblies, and other critical areas where vibration and stress are prevalent.

Purpose of the 3074354 Twelve Point Cap Screw in Truck Operation

This Cummins part plays a significant role in the operation and maintenance of commercial trucks. It is utilized in various truck components, including engine mounts, transmission housings, and chassis structures. By providing a secure and stable connection, this screw helps maintain the integrity of these components under the rigorous conditions encountered in heavy-duty truck operations.

Key Features of the 3074354 Twelve Point Cap Screw

The 3074354 Twelve Point Cap Screw boasts several distinctive characteristics that enhance its functionality and durability. Its twelve-point design allows for increased torque application and reduced risk of stripping. The screw is made from high-strength materials, ensuring it can withstand the high loads and vibrations typical in commercial truck environments. Additionally, its precise manufacturing tolerances ensure a snug fit in mating components, contributing to the overall structural integrity of the assembly ².

Benefits of Using the 3074354 Twelve Point Cap Screw

Utilizing the 3074354 Twelve Point Cap Screw offers several advantages. The screw’s design enables improved torque application, which is crucial for securing heavy components in place. Its resistance to loosening under vibration ensures that connections remain tight over time, reducing the need for frequent re-tightening. Furthermore, the enhanced structural integrity provided by this screw contributes to the longevity and reliability of truck assemblies.

Installation and Usage Guidelines

Proper installation of the 3074354 Twelve Point Cap Screw is vital to ensure optimal performance and longevity. Begin by cleaning the mating surfaces to remove any debris or contaminants. Use a torque wrench to install the screw, applying the recommended torque specification to avoid over-tightening, which could damage the screw or the component. It is also advisable to use a thread lubricant to facilitate installation and reduce the risk of galling ³.

Troubleshooting Common Issues

Typical problems that may arise with the 3074354 Twelve Point Cap Screw include loosening due to vibration, corrosion, or damage from over-tightening. To address these issues, regularly inspect the screw and its mating components for signs of wear or corrosion. If loosening is detected, re-tighten the screw to the specified torque. In cases of corrosion, clean the affected areas and apply a corrosion-resistant coating. If the screw is damaged, replace it with a new one to maintain the integrity of the assembly.

Maintenance Tips

To prolong the service life of the 3074354 Twelve Point Cap Screw, regular maintenance is recommended. Inspect the screw and its mating components during routine service intervals, looking for signs of wear, corrosion, or loosening. Clean the screw and surrounding areas to remove any debris or contaminants. Perform torque checks to ensure the screw remains properly tightened. Applying a corrosion-resistant coating can also help protect the screw from environmental factors.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a rich history dating back to 1919, Cummins has established a strong reputation in the commercial truck industry for producing reliable and high-performance components. The company’s extensive product range includes engines, powertrains, and aftermarket parts, all designed to meet the demanding requirements of heavy-duty applications. Cummins’ commitment to innovation and quality ensures that its products, like the 3074354 Twelve Point Cap Screw, deliver exceptional performance and durability in commercial truck operations.

Twelve Point Cap Screw 3074354 in Cummins Engines

The Twelve Point Cap Screw part number 3074354, manufactured by Cummins, is a critical component in several of their engine models. This part is integral to the assembly and maintenance of these engines, ensuring structural integrity and proper functioning.

G855 Series

The G855 series, which includes the G855 CM558 and GTA855 CM558 (CM2358), utilizes the 3074354 cap screw in various applications. These engines are known for their robust design and high performance, and the cap screw plays a vital role in maintaining the alignment and stability of engine components.

G101 Series

The G101 engine also incorporates the 3074354 cap screw. This engine is part of the G series and is designed for heavy-duty applications, requiring reliable fastening solutions to withstand the stresses of continuous operation.

N14 Series

The N14 series, which includes the N14 G and N14 MECHANICAL engines, employs the 3074354 cap screw in its construction. These engines are known for their durability and efficiency, and the cap screw is essential for securing various engine parts and ensuring proper assembly.

NH/NT 855 Series

The NH/NT 855 engine also utilizes the 3074354 cap screw. This engine is part of the NH/NT series and is designed for agricultural and industrial applications, where reliability and performance are critical.

QSK Series

The QSK45 CM500 and QSK60 CM500 engines both feature the 3074354 cap screw. These engines are part of the QSK series and are known for their high power output and efficiency. The cap screw is used in various applications within these engines to ensure proper fastening and alignment of components.

Role of Part 3074354 Twelve Point Cap Screw in Engine Systems

The part 3074354 Twelve Point Cap Screw is integral to the assembly and operation of various engine components. In the Electronically Controlled Brake Module (EBm), this cap screw secures the manifold to the water housing, ensuring a tight seal that prevents leaks and maintains efficient coolant flow. It also plays a role in attaching the thermostat, which is vital for regulating engine temperature by controlling the flow of coolant between the engine and the radiator.

In the lubricating oil pump, the Twelve Point Cap Screw is used to fasten components that ensure the pump operates smoothly, delivering the necessary lubrication to engine parts. This helps in reducing friction and wear, contributing to the longevity of the engine.

Additionally, the cap screw is employed in the assembly of the water pump, where it secures parts that facilitate the circulation of coolant throughout the engine. This is essential for dissipating heat and maintaining optimal engine operating temperatures.

The Twelve Point Cap Screw also finds its application in the water manifold and the water outlet flange. In these components, it ensures that connections are secure, preventing coolant loss and maintaining the integrity of the cooling system.

Overall, the part 3074354 Twelve Point Cap Screw is a fundamental fastener in engine systems, contributing to the secure assembly and efficient operation of critical components.

Conclusion

The 3074354 Twelve Point Cap Screw is a vital component in the assembly and maintenance of commercial truck engines and components. Its design, characterized by a twelve-point head, allows for increased torque application and reduced risk of stripping, making it suitable for heavy-duty applications. The screw’s high-strength material and precise manufacturing tolerances ensure it can withstand the rigorous conditions encountered in truck operations. Regular maintenance and proper installation are crucial to prolonging the service life of this part and ensuring the reliability and performance of truck assemblies.