3025806
Socket Head Cap Screw
Cummins®

The 3025806 Socket Head Cap Screw, manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. This screw is integral to various truck components, ensuring secure and reliable connections that withstand the rigors of heavy-duty applications.

Basic Concepts of Socket Head Cap Screws

Socket Head Cap Screws are a type of fastener characterized by a hexagonal socket in the head, which allows for torque application using a hex key. These screws are commonly used in mechanical assemblies where a flush surface finish is required, and they provide a strong, permanent fastening solution. The hexagonal socket design enables precise torque application, reducing the risk of over-tightening or stripping the screw head ¹.

Purpose of Socket Head Cap Screw 3025806

The 3025806 plays a specific role in the operation and maintenance of commercial trucks. It is utilized in areas where high strength and resistance to loosening are required. This screw is often found in critical truck components, such as engine mounts, transmission housings, and chassis assemblies. Its design ensures that connections remain secure under vibration and dynamic loads, contributing to the overall reliability and safety of the vehicle ².

Key Features

The 3025806 boasts several key features that enhance its performance and durability. It is typically made from high-strength alloy steel, which provides excellent tensile strength and resistance to wear. The screw features a fine or coarse thread, depending on the application, allowing for optimal engagement with the mating material. Additionally, it may have special coatings or treatments, such as zinc plating or black oxide finish, to improve corrosion resistance and longevity in harsh environments ³.

Benefits

Using the 3025806 in truck maintenance and assembly offers several advantages. The hexagonal socket allows for precise torque application, ensuring that the screw is tightened to the manufacturer’s specifications without risk of damage. The screw’s resistance to loosening under vibration makes it ideal for use in dynamic environments. Furthermore, its durable material composition and protective coatings contribute to its longevity, reducing the need for frequent replacements and maintenance.

Troubleshooting and Maintenance

Common issues with Socket Head Cap Screws include loosening due to vibration and corrosion from exposure to moisture and chemicals. To troubleshoot these problems, regular inspections should be conducted to check for signs of wear or damage. Torque checks can ensure that screws are properly tightened. Maintenance tips include applying a thread locker to prevent loosening and using corrosion-resistant coatings to protect against environmental factors. Proper storage and handling of screws can also prevent damage and ensure their longevity.

About Cummins

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 itself as a trusted name in the commercial truck industry. The company is committed to quality and innovation, continually developing advanced technologies and solutions to meet the evolving needs of its customers. Cummins’ dedication to excellence ensures that its components, including the 3025806, deliver reliable performance and durability in demanding applications.

Cummins Socket Head Cap Screw 3025806 Compatibility

The Cummins Socket Head Cap Screw part number 3025806 is a versatile component designed to fit a variety of Cummins engines. This screw is integral in securing various parts and assemblies within the engine, ensuring structural integrity and operational efficiency. Below is a detailed look at the engines with which this part is compatible.

Compatible Engines

• B Series Engines

  • B4.5 RGT
  • B6.7 CM2350 B135B
  • B6.7 CM2670 B153B
  • B6.7 CM2670 B164C
  • B6.7 G CMOH6.0 B125

• ISB/ISD Series Engines

  • ISB CM2150
  • ISB/ISD4.5 CM2150 B119
  • ISB/ISD6.7 CM2150 SN
  • ISB6.7 CM2250
  • ISB6.7 CM2350 B101
  • ISB6.7 G CM2180 B118

• ISBE Series Engines

  • ISBE CM2150
  • ISBE CM800
  • ISBE4 CM850

• ISD Series Engines

  • ISD4.5 CM2220 D108

• ISX Series Engines

  • ISX CM570
  • ISX CM870
  • ISX CM871
  • ISX12 CM2350 X102
  • ISX12/ISX11.9 CM2250
  • ISX15 CM2250

• L Series Engines

  • L10 GAS

• QSB Series Engines

  • QSB4.5 CM2250 EC
  • QSB4.5 CM850 (CM2850)
  • QSB6.7 CM2250

This grouping helps in understanding the broader applications and compatibility of the 3025806 across different engine series and models.

Role of Part 3025806 Socket Head Cap Screw in Engine Systems

The 3025806 is instrumental in securing and maintaining the integrity of various components within engine systems. Its applications span across multiple subsystems, ensuring that each part functions cohesively and efficiently.

Accessories and Wiring Arrangement

In the accessories and wiring arrangement, the Socket Head Cap Screw is utilized to fasten electrical components and wiring harnesses. This ensures that connections remain secure, reducing the risk of electrical faults or disconnections that could impair engine performance.

Turbocharger and EBM-Plumbing

For the turbocharger and EBM (Engine-driven Blower Module) plumbing, the Socket Head Cap Screw plays a significant role in securing the turbocharger to its mounting points. It also ensures that the EBM-plumbing connections are tight, preventing leaks and maintaining the efficiency of the forced induction system.

Fuel System Components

Within the fuel system, this screw is employed in the fuel control module, fuel pump, and fuel transfer pump. It secures these components to their respective mounts, ensuring stability and preventing vibrations that could disrupt fuel delivery.

Gear Support Plate and Integrated Fuel System Module

The gear support plate, which is often part of the integrated fuel system module service/repair kit, relies on the Socket Head Cap Screw to maintain structural integrity. This is vital for the precise operation of fuel metering and delivery mechanisms.

Long Block and Oil Suction Connection

In the long block assembly, the screw is used to secure various components, including the oil suction connection. This ensures that oil pathways remain unobstructed and that the oil supply to critical engine parts is consistent.

Pan, Oil, and Primer

The oil pan and primer are secured using the Socket Head Cap Screw to ensure that these components remain in place during engine operation. This is particularly important for the primer, which needs to be securely mounted to function effectively during engine start-up.

Turbocharger Arrangement and Oil Mounting Supply

Finally, in the turbocharger arrangement and oil mounting supply, the screw ensures that all connections are secure. This is essential for the turbocharger’s efficient operation and for maintaining the integrity of the oil supply lines that lubricate and cool the turbocharger.

Conclusion

The 3025806 Socket Head Cap Screw is a critical component in the maintenance and operation of commercial trucks. Its robust design, precise torque application capabilities, and compatibility with a wide range of Cummins engines make it an indispensable part in ensuring the reliability and safety of heavy-duty vehicles. Regular maintenance and proper use of this screw contribute to the longevity and performance of truck components, underscoring the importance of using high-quality fasteners in demanding applications.