3093930
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3093930, is a component manufactured by Cummins, a prominent name in the commercial truck industry. This screw is significant due to its role in ensuring the structural integrity and operational efficiency of commercial trucks. Cummins, known for its high-quality engine and component manufacturing, produces this screw to meet the demanding requirements of heavy-duty applications ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and a flange beneath the head. The hexagonal head allows for efficient torque application using standard tools, while the flange provides a larger bearing surface that distributes the load more evenly, reducing the risk of the screw sinking into the material. In a truck’s assembly, this screw plays a role in securing various components, ensuring they remain firmly in place under operational stress ².

Purpose and Role

The 3093930 Hexagon Flange Head Cap Screw serves multiple functions within a truck’s operation. It is commonly used to fasten engine components, chassis parts, and other critical assemblies where high tensile strength and resistance to vibration are required. Its design ensures that components remain securely attached, contributing to the overall stability and performance of the truck ³.

Key Features

The 3093930 Hexagon Flange Head Cap Screw features a hexagonal head that facilitates easy and precise tightening using common tools. The flange beneath the head provides an increased contact area, which helps in distributing the clamping force more effectively. Additionally, the screw is typically made from high-strength materials, such as alloy steel, to ensure durability and resistance to corrosion. These features make it suitable for demanding applications in commercial trucks ⁴.

Benefits

The benefits of using the 3093930 Hexagon Flange Head Cap Screw include enhanced stability due to its flange design, which prevents the screw from digging into the material. Its hexagonal head allows for efficient torque application, reducing the likelihood of over-tightening or stripping. The screw’s material composition provides excellent resistance to corrosion and wear, ensuring long-term performance. Additionally, the design facilitates ease of installation and removal, making maintenance more straightforward ⁵.

Installation Process

Proper installation of the 3093930 Hexagon Flange Head Cap Screw involves several steps to ensure it functions correctly and maintains its integrity. Begin by cleaning the installation site to remove any debris or corrosion. Use a torque wrench to apply the specified torque, ensuring the screw is tightened to the manufacturer’s recommendations. It is important to follow the torque sequence if multiple screws are being installed to ensure even distribution of clamping force. Regularly check the tightness of the screw during the initial operation period to confirm it remains secure ⁶.

Troubleshooting and Maintenance

Common issues with the 3093930 Hexagon Flange Head Cap Screw may include loosening due to vibration or corrosion. Regular inspections should be conducted to identify any signs of wear or damage. If loosening is detected, re-tighten the screw to the specified torque. In cases of corrosion, cleaning the affected area and applying a suitable anti-corrosion treatment can help prevent further degradation. Maintaining proper torque and ensuring the screw is compatible with the application will contribute to its longevity and performance ⁷.

Cummins Overview

Cummins is a well-established manufacturer in the commercial truck industry, known for its comprehensive range of engines and components. Founded in 1919, Cummins has built a reputation for innovation, quality, and reliability. The company offers a diverse product line that includes engines, filtration systems, and aftermarket parts, all designed to meet the rigorous demands of heavy-duty applications. Cummins’ commitment to excellence is reflected in its products, including the 3093930 Hexagon Flange Head Cap Screw, which is engineered to provide reliable performance in commercial trucks ⁸.

Compatibility with Cummins Engines

The Cummins part number 3093930, a Hexagon Flange Head Cap Screw, is designed to fit a variety of Cummins engines. This screw is integral in securing components within the engine assembly, ensuring structural integrity and proper function. Here is a detailed breakdown of its compatibility with various Cummins engines:

Small Bore Engines

• 6C8.3
• B3.3
• D4.0 CM2620
• F3.8 CM2350
• F3.8 CM2620
• F3.8 F102
• F4.5 CM2620
• ISB CM550
• ISBE CM2150
• ISBE4 CM850
• ISF2.8 CM2220
• ISF3.8 CM2220
• ISL9 CM2150
• ISM CM570
• ISX CM570
• ISX CM870
• L8.9
• L8.9 L121
• L8.9G CMOH2.0 L125B
• L9.5 L117

Medium Bore Engines

• QSB4.5 CM2250 EC

The Hexagon Flange Head Cap Screw 3093930 is engineered to meet the stringent requirements of Cummins engines, ensuring reliable performance and durability. Its compatibility across a wide range of engines highlights its versatility and importance in maintaining the integrity of the engine assembly ⁹.

Role of Part 3093930 Hexagon Flange Head Cap Screw in Engine Systems

The part 3093930 Hexagon Flange Head Cap Screw is instrumental in securing and maintaining the integrity of various engine components. Its robust design ensures a firm and reliable connection, which is essential for the efficient operation of the engine system.

Air System Components

In the air cleaner system, this screw is used to secure the air cleaner housing to the engine block, ensuring a tight seal that prevents air leaks. Similarly, in the air crossover connection and air transfer connection, it plays a role in maintaining the structural integrity and alignment of these components, which is vital for efficient airflow management.

Starting and Cooling Systems

For the air heater starting aid, the screw ensures that the heater is securely mounted, allowing for effective preheating of the intake air during cold starts. In the engine oil cooler and marine gear oil cooler systems, it is used to attach the cooler to its bracket and the engine, ensuring optimal cooling performance by maintaining a secure and stable connection.

Electrical and Control Systems

The electronic control module wiring harness and engine control module mounting benefit from the use of this screw to ensure that these sensitive components are securely fastened. This is important for maintaining the integrity of the electrical connections and protecting the modules from vibrations and physical damage.

Fuel System Components

In the fuel filter plumbing and fuel pump mounting, the screw is used to secure these components in place, ensuring that the fuel system operates smoothly without leaks or disruptions. It also plays a role in the fuel pump system by securing the pump to its mounting bracket, which is essential for consistent fuel delivery.

Mechanical and Structural Components

The connecting rod and piston assembly, crankcase breather, cylinder head, and flywheel housing all utilize this screw to secure critical components, ensuring that these parts remain in their proper positions and function correctly under the high stresses and vibrations of engine operation.

Accessory and Guard Systems

The alternator guard, front gear train accessory mounting, guard package, and heat shield arrangement all rely on the screw to maintain their structural integrity and proper positioning. This is particularly important for components that are exposed to high temperatures and mechanical stresses.

Performance and Service Components

In performance parts and service kits, the screw is often used to secure upgraded or replacement components, ensuring that these parts are installed correctly and function as intended. The wiring brace also utilizes this screw to secure wiring harnesses, protecting them from damage and ensuring reliable electrical connections.

Conclusion

Overall, the part 3093930 Hexagon Flange Head Cap Screw is a versatile and essential component in various engine systems, providing the necessary security and stability for optimal engine performance.