3093789
Twelve Point Cap Screw
Cummins®

The Twelve Point Cap Screw, identified by part number 3093789, is a component manufactured by Cummins, a leading name in the commercial truck industry. This screw plays a significant role in the maintenance and operation of commercial trucks, ensuring the integrity and efficiency of various mechanical assemblies.

Basic Concepts of Twelve Point Cap Screws

A Twelve Point Cap Screw is a type of fastener characterized by its hexagonal socket head, which allows for increased contact area and reduced cam-out during tightening. This design facilitates more precise torque application compared to traditional hex-head screws. Twelve Point Cap Screws are commonly used in mechanical assemblies where high torque and secure fastening are required ¹.

Role of the 3093789 Twelve Point Cap Screw in Truck Operation

The 3093789 Twelve Point Cap Screw is integral to the operation and maintenance of commercial trucks. It is utilized in various applications where secure fastening is crucial, such as in engine components, chassis assemblies, and other critical areas. By providing a reliable and robust fastening solution, this screw helps maintain the structural integrity and operational efficiency of the truck ².

Key Features

The 3093789 Twelve Point Cap Screw boasts several key features that enhance its functionality. Its design includes a twelve-point socket head, which offers improved torque application and reduced risk of cam-out. The screw is made from high-quality materials, ensuring durability and resistance to corrosion. Additionally, its precise manufacturing tolerances guarantee a secure fit in applications, contributing to the overall reliability of the fastening solution ³.

Benefits of Using the 3093789 Twelve Point Cap Screw

Utilizing the 3093789 Twelve Point Cap Screw in truck maintenance offers several advantages. The screw’s design allows for more consistent torque application, reducing the likelihood of over-tightening or under-tightening. Its resistance to loosening ensures that fastenings remain secure over time, even under demanding conditions. Furthermore, the ease of use provided by the twelve-point head simplifies installation and removal, enhancing efficiency in maintenance procedures.

Installation Guidelines

Proper installation of the 3093789 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 apply the specified torque, ensuring that the screw is tightened to the manufacturer’s recommendations. It is important to follow best practices, such as tightening in a criss-cross pattern for multiple screws, to achieve even distribution of force and prevent distortion of the fastened components.

Troubleshooting Common Issues

Common issues associated with Twelve Point Cap Screws may include loosening over time, corrosion, or damage to the screw head. Loosening can often be addressed by re-tightening the screw to the specified torque. Corrosion may require cleaning and the application of a suitable anti-corrosion treatment. If the screw head is damaged, replacement of the screw is recommended to maintain the integrity of the fastening.

Maintenance Tips

Regular maintenance of the 3093789 Twelve Point Cap Screw is important to ensure its longevity and reliability. Inspect the screw periodically for signs of corrosion, damage, or loosening. Clean the screw and mating surfaces as needed to prevent buildup of contaminants. Follow the manufacturer’s guidelines for torque specifications during re-tightening or replacement to maintain the fastening’s effectiveness.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality, reliability, and innovation in the commercial truck industry. The company’s extensive product range includes engines, powertrains, and aftermarket parts, all designed to meet the demanding requirements of commercial transportation.

Twelve Point Cap Screw in Cummins Engines

The Twelve Point Cap Screw part number 3093789, manufactured by Cummins, is a critical component in several of their engine models. This part is integral to the assembly and functionality of the engines, ensuring that various parts are securely fastened and aligned.

QST30 CM2350 T101 and QST30 CM552 Engines

In the QST30 CM2350 T101 and QST30 CM552 engines, the Twelve Point Cap Screw 3093789 plays a vital role in maintaining the structural integrity and operational efficiency of the engine. This screw is used in areas where high torque and secure fastening are required, ensuring that components remain tightly secured under various operational conditions.

The use of a twelve-point profile in the cap screw design allows for better grip and reduced rounding of the fastener head, which is crucial for maintaining the torque specifications and ensuring the longevity of the screw. This design feature is particularly beneficial in high-stress environments typical of engine assemblies.

The precise placement and application of the Twelve Point Cap Screw 3093789 in these engines highlight its importance in the overall assembly process. It is used in various locations within the engine to secure different parts, contributing to the engine’s overall performance and reliability.

Part 3093789 Twelve Point Cap Screw Component Usage

The part 3093789 Twelve Point Cap Screw is integral to the assembly and maintenance of various engine components. Its primary function is to secure and fasten different parts together, ensuring they remain in place under the high stress and vibrations typical of engine operation.

In the camshaft and gear assembly, the Twelve Point Cap Screw is used to attach the camshaft to the cylinder head. This secures the camshaft in position, allowing it to operate the valves via the cam lobes with precision and reliability.

Within the fuel manifold, this cap screw plays a role in fastening the manifold to the engine block. This ensures a tight seal, preventing fuel leaks and maintaining the integrity of the fuel delivery system.

The cylinder head is another area where the Twelve Point Cap Screw is extensively used. It secures the head to the engine block, creating a sealed combustion chamber. Proper fastening is essential for maintaining compression and preventing coolant or oil leaks.

In the injector system, these cap screws are employed to attach injectors to the fuel rail or directly to the cylinder head. This ensures that the injectors are held firmly in place, allowing for accurate fuel delivery and consistent engine performance.

Overall, the part 3093789 Twelve Point Cap Screw is a fundamental component in the secure assembly of engine parts, contributing to the reliability and performance of the engine system.

Conclusion

The 3093789 Twelve Point Cap Screw is a vital component in the maintenance and operation of commercial trucks, particularly in Cummins engines. Its design, featuring a twelve-point socket head, ensures precise torque application and secure fastening, which are critical for the structural integrity and efficiency of truck engines. Proper installation, regular maintenance, and troubleshooting of common issues are essential to maximize the performance and longevity of this Cummins part.