3966286
Studded Hexagon Cap Screw
Cummins®

The 3966286 Studded Hexagon Cap Screw is a component manufactured by Cummins, a well-established name in the commercial truck industry. This screw is significant in the context of commercial truck components due to its role in securing various parts and assemblies within the truck’s systems. Understanding its function and importance can contribute to better maintenance and operational efficiency of commercial trucks.

Basic Concepts of Studded Hexagon Cap Screws

A studded hexagon cap screw is a type of fastener characterized by a hexagonal head and a threaded shank that extends beyond the head, allowing it to be screwed into a corresponding threaded hole. These screws are commonly used in mechanical assemblies to secure components together. They provide a strong and reliable connection, distributing load effectively across the fastened parts and resisting loosening due to vibration or other dynamic forces ¹.

Role of the 3966286 Studded Hexagon Cap Screw in Truck Operations

This Cummins part plays a specific role in the operation and maintenance of commercial trucks. It is utilized in various truck systems where secure fastening is required. This includes applications in the engine, transmission, and chassis components. By providing a robust connection, it helps maintain the integrity and performance of these critical systems ².

Key Features of the 3966286 Studded Hexagon Cap Screw

The 3966286 is designed with several key features that enhance its performance and durability. Its hexagonal head allows for efficient tightening and loosening using a wrench, ensuring secure installation. The screw is made from high-quality materials, typically steel, which provides strength and resistance to wear. The threading is precise, ensuring a tight and secure fit in the corresponding holes. Additionally, the extended shank allows for greater engagement with the threaded hole, improving the screw’s holding power ³.

Benefits of Using the 3966286 Studded Hexagon Cap Screw

Using this part offers several benefits. It provides improved load distribution across the fastened components, enhancing the overall stability and performance of the assembly. The secure connection it offers reduces the risk of loosening due to vibration, which is common in the dynamic environment of a commercial truck. Furthermore, its design and material composition contribute to increased resistance to corrosion and wear, extending the service life of the screw and the components it secures.

Installation Guidelines

Proper installation of the 3966286 is crucial for optimal performance and longevity. It should be installed using the appropriate torque specifications to ensure a secure fit without over-tightening, which could damage the screw or the components. Best practices include cleaning the threaded hole before installation to remove any debris that could affect the screw’s grip. Additionally, using a wrench to tighten the screw ensures even force distribution and a secure connection.

Troubleshooting Common Issues

Common issues with the 3966286 may include loosening, corrosion, or damage. Loosening can often be addressed by re-tightening the screw to the specified torque. Corrosion may require cleaning the affected area and applying a suitable protective coating. Damage to the screw or the threaded hole may necessitate replacement to maintain the integrity of the fastened components.

Maintenance Tips

Regular maintenance of the 3966286 can prevent failures and extend its service life. Inspection routines should include checking for signs of loosening, corrosion, or damage. Replacement guidelines suggest that screws showing significant wear or damage should be replaced to maintain the security and performance of the fastened components.

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 of innovation and quality, Cummins has established a strong reputation in the commercial truck industry. The company’s commitment to quality and innovation is reflected in its components, like the 3966286, which are designed to meet the demanding requirements of commercial truck operations.

Studded Hexagon Cap Screw 3966286 in Cummins Engines

The Studded Hexagon Cap Screw 3966286, manufactured by Cummins, is a critical component in various Cummins engine models. This part is essential for securing different parts within the engine assembly, ensuring structural integrity and operational efficiency.

Engine Models Utilizing 3966286

6C8.3, B6.7 CM2670, B153B, ISBE4 CM850, ISC CM2150, ISC CM850, ISC8.3 CM2250, ISL CM2150, ISL G CM2180, ISL9 CM2150 SN, ISL9 CM2250, ISL9.5 CM2880 L138, ISZ13 CM2150 Z105

These engines utilize the 3966286 screw for fastening various components. This screw is crucial in maintaining the alignment and stability of engine parts, ensuring that the engine operates smoothly and efficiently.

L8.9 CM2670 L134C, L8.9 L121, L8.9G CMOH2.0 L125B, L9 CM2670 L128B, L9.5 L117

The L8.9 CM2670 L134C, L8.9 L121, L8.9G CMOH2.0 L125B, L9 CM2670 L128B, and L9.5 L117 engines also incorporate the 3966286 screw. This part is vital in these engines for securing components that are subject to high stress and vibration, ensuring the longevity and reliability of the engine.

QSC8.3 CM2880 C102, QSC8.3 CM850(CM2850), QSC9 CM2250/QSL9 CM2250, QSL8.9 CM2150 L141, QSL9 CM2250, QSL9 CM850(CM2850), QSL9.3 CM2880 L113

The QSC8.3 CM2880 C102, QSC8.3 CM850(CM2850), QSC9 CM2250/QSL9 CM2250, QSL8.9 CM2150 L141, QSL9 CM2250, QSL9 CM850(CM2850), and QSL9.3 CM2880 L113 engines also feature the 3966286 screw. This screw is used to fasten components that are critical to the engine’s performance and durability, ensuring that the engine can withstand the demands of heavy-duty applications.

The 3966286 Studded Hexagon Cap Screw is a testament to Cummins’ commitment to quality and reliability, providing a dependable fastening solution across a wide range of engine models.

Role of Part 3966286 Studded Hexagon Cap Screw in Engine Systems

The part 3966286 Studded Hexagon 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 structural integrity and proper operation of the engine system.

Block and Cylinder Assembly

In the context of the engine block and cylinder assembly, the 3966286 Studded Hexagon Cap Screw is used to fasten the cylinder to the block. This secure attachment is essential for maintaining the alignment and stability of the cylinder within the block, which is vital for the engine’s performance. The screw helps in distributing the load evenly across the connection points, reducing the risk of misalignment or failure under operational stress.

Block Kit and Cylinder Block

When dealing with block kits and cylinder blocks, the 3966286 Studded Hexagon Cap Screw plays a significant role in the installation process. It is employed to fasten various components within the block kit, such as the cylinder block hardware. This ensures that all parts are held firmly in place, allowing for precise machining and assembly of the cylinder block. The secure fastening provided by the screw is essential for the longevity and reliability of the engine.

Cylinder Block Hardware Kit and Cylinder Block Kit

In cylinder block hardware kits and cylinder block kits, the 3966286 Studded Hexagon Cap Screw is used to assemble and secure multiple components. This includes fastening brackets, mounts, and other hardware that are critical for the structural integrity of the cylinder block. The screw’s design allows for easy installation and removal, facilitating maintenance and repair processes. Its studded feature provides additional strength, making it suitable for high-stress applications within the engine system.

Ground and Engine Integration

The integration of the engine with the ground or chassis also benefits from the use of the 3966286 Studded Hexagon Cap Screw. It is often used to secure engine mounts and brackets, ensuring that the engine is firmly attached to the chassis. This secure attachment is important for absorbing vibrations and reducing stress on the engine during operation. The screw’s robust design helps in maintaining the engine’s position and alignment, contributing to overall engine stability and performance.

Conclusion

The 3966286 Studded Hexagon Cap Screw is a critical component in the maintenance and operation of commercial trucks and Cummins engines. Its role in securing various parts and assemblies ensures the structural integrity and performance of the engine system. Understanding its features, benefits, and proper installation and maintenance practices can contribute to the longevity and reliability of the components it secures.