3093939
Hexagon Flange Head Cap Screw
Cummins®

Introduction

The Hexagon Flange Head Cap Screw, identified by part number 3093939, is a component manufactured by Cummins, a well-established name in the automotive and heavy-duty truck industry. This screw is integral to commercial truck maintenance, providing reliable fastening solutions that ensure the structural integrity and operational efficiency of various truck systems.

Basic Concepts

The Hexagon Flange Head Cap Screw is designed with a hexagonal head, which allows for efficient torque application using standard tools ¹. The flange feature at the base of the screw head provides additional surface area, enhancing the screw’s resistance to loosening under vibration and dynamic loads ². Typically constructed from high-strength materials such as alloy steel, this screw is engineered to withstand the demanding conditions encountered in the automotive industry. Its applications range from securing engine components to fastening chassis parts, making it a versatile fastener in truck maintenance.

Function and Operation

Within the context of a commercial truck, the Hexagon Flange Head Cap Screw operates by securely fastening components together. Its design ensures that it can maintain a tight grip even under the significant stresses and vibrations experienced during truck operation. By providing a stable connection between parts, it plays a role in preserving the structural integrity of the truck’s assemblies.

Purpose of the Hexagon Flange Head Cap Screw

The specific role of the Hexagon Flange Head Cap Screw in truck operation is to secure various components and assemblies, ensuring they remain firmly in place under operational stresses. Its application is crucial in systems where vibration and dynamic loads are common, such as in the engine, transmission, and chassis. By providing a reliable fastening solution, it contributes to the overall safety and performance of the truck.

Key Features

The primary characteristics of the Hexagon Flange Head Cap Screw include its hexagonal head design, which facilitates easy and precise torque application. The flange feature enhances its resistance to loosening, while its cap screw functionality allows it to penetrate and secure components effectively. These features collectively contribute to the screw’s effectiveness in demanding environments.

Benefits

The Hexagon Flange Head Cap Screw offers several advantages, including enhanced torque application due to its hexagonal head, improved resistance to loosening thanks to the flange, and increased durability in demanding environments owing to its high-strength material construction ³. These benefits make it a preferred choice for critical fastening applications in commercial trucks.

Installation Guidelines

Proper installation of the Hexagon Flange Head Cap Screw involves several best practices to ensure optimal performance and longevity. It should be installed using the correct torque specifications to avoid over-tightening, which can lead to damage, or under-tightening, which can result in loosening. Utilizing the appropriate tools and following a systematic approach to installation will help maintain the screw’s integrity and effectiveness.

Troubleshooting Common Issues

Frequent problems associated with the Hexagon Flange Head Cap Screw include loosening, corrosion, or damage. To address these issues, regular inspections should be conducted to identify any signs of wear or corrosion. In cases of loosening, re-tightening to the specified torque is recommended. Corrosion can be mitigated through the application of protective coatings or lubricants, while damage may necessitate replacement of the screw.

Maintenance Tips

To prolong the service life of the Hexagon Flange Head Cap Screw, regular maintenance is advised. This includes periodic inspections to check for signs of wear, corrosion, or loosening. Torque checks should be performed to ensure that the screw remains properly tightened. Adhering to recommended replacement schedules will help maintain the screw’s effectiveness and the overall integrity of the truck’s assemblies.

Cummins 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 is committed to quality and innovation, offering a wide range of products designed to meet the demanding requirements of the automotive industry. Their dedication to excellence is evident in the design and performance of components like the Hexagon Flange Head Cap Screw.

Cummins Engine Compatibility with Hexagon Flange Head Cap Screw Part 3093939

The Cummins Hexagon Flange Head Cap Screw part number 3093939 is a versatile component designed to fit various Cummins engines. This screw is engineered to provide a secure fastening solution in applications where a flange head cap screw is required. Below is a detailed description of its compatibility across different Cummins engine models.

Cummins 4B3.9, 6B5.9, and 6C8.3 Engines

The 3093939 screw is compatible with the 4B3.9, 6B5.9, and 6C8.3 engines. These engines are known for their robust performance and are often used in heavy-duty applications. The screw’s design ensures it can withstand the operational stresses and provide reliable fastening in these demanding environments.

Cummins B3.3, B4.5, B5.9, B6.7, and D4.0 Engines

The part number 3093939 is also suitable for the B3.3, B4.5, B5.9, B6.7, and D4.0 engines. These engines are part of the Cummins B and D series, which are widely recognized for their versatility and efficiency. The screw’s flange head and hexagonal socket provide a secure fit, making it ideal for these applications.

Cummins ISB/ISD and ISBE Engines

The 3093939 screw fits well with the ISB/ISD and ISBE engines, including models such as ISB/ISD4.5 CM2150 B119, ISB/ISD6.7 CM2150 SN, ISB3.9 CM2220 B107, ISB5.9 CM2880 B127, ISBE CM2150, ISBE CM800, and ISBE4 CM850. These engines are known for their reliability and performance in various applications, from construction to transportation. The screw’s design ensures it can handle the specific fastening requirements of these engines.

Cummins ISC Engines

The ISC series engines, including ISC CM2150, ISC CM554, ISC CM850, and ISC8.3 CM2250, are also compatible with the 3093939 screw. These engines are designed for heavy-duty applications and require reliable fastening solutions. The screw’s hexagonal flange head provides a secure fit, ensuring it can withstand the operational stresses of these engines.

Cummins ISF3.8 and ISD4.5 Engines

The 3093939 screw is also suitable for the ISF3.8 CM2220 AN and ISD4.5 CM2220 D108 engines. These engines are part of the Cummins range and are used in various applications. The screw’s design ensures it can provide a secure fastening solution in these specific engine models.

Cummins G8.3 Engine

The G8.3 engine is another model that is compatible with the 3093939 screw. This engine is known for its performance and reliability, and the screw’s design ensures it can provide a secure fastening solution in this application.

By understanding the compatibility of the Cummins Hexagon Flange Head Cap Screw part number 3093939 with various engine models, technicians and operators can ensure they are using the correct components for their specific engine needs.

Component Usage

The part 3093939 Hexagon Flange Head Cap Screw is instrumental in securing and maintaining the integrity of various components within engine systems. Its robust design ensures reliable fastening across a range of critical assemblies.

Aftercooler

In the aftercooler system, this screw is used to secure the aftercooler to the engine frame, ensuring efficient cooling of the compressed air before it enters the engine cylinders.

Air Intake Connection

For the air intake connection, the screw plays a role in fastening the intake manifold to the cylinder head, ensuring a secure seal and optimal airflow into the engine.

Auxiliary Pump

When integrating an auxiliary pump, such as a fuel or hydraulic pump, the screw is employed to mount the pump securely to the engine block or frame, guaranteeing stable operation and preventing vibrations.

Cam Follower

In the valve train mechanism, the screw is utilized to attach the cam follower to the rocker arm or directly to the camshaft, maintaining precise valve timing and operation.

Crankshaft Pulley

For the crankshaft pulley, the screw is essential in attaching the pulley to the crankshaft, ensuring the smooth transfer of rotational force to other engine components like the alternator and water pump.

Cylinder Block

Within the cylinder block assembly, the screw is used to fasten various brackets, sensors, and ancillary components, contributing to the structural stability of the engine.

Electronic Control Module Wiring Harness

In the electronic control module (ECM) wiring harness setup, the screw secures the ECM to the engine bay, protecting the sensitive electronics from environmental factors and ensuring reliable performance.

Engine Control Module Location

At the engine control module (ECM) location, the screw is critical for mounting the ECM to its designated spot, often near the firewall, to facilitate easy access for diagnostics and maintenance.

Front Drive Adapter

For the front drive adapter, the screw is used to attach the adapter to the front of the engine, ensuring the proper alignment and connection to the transmission or other drivetrain components.

Front Engine Support

In the front engine support structure, the screw secures the engine to the chassis, providing the necessary stability and reducing engine movement during operation.

Front Gear Train Accessory Drive

Within the front gear train accessory drive system, the screw is employed to mount various accessories like the alternator, power steering pump, and air conditioning compressor to the engine.

Fuel Control Module

For the fuel control module, the screw is used to attach the module to the engine or fuel system, ensuring accurate fuel delivery and management.

Fuel Filter

In the fuel filter assembly, the screw secures the filter housing to the fuel lines, maintaining a leak-free connection and ensuring clean fuel supply to the engine.

Fuel Pump

When installing the fuel pump, the screw is utilized to mount the pump to the fuel tank or engine bay, ensuring it remains in place and functions correctly.

Intercooler

In the intercooler system, the screw is used to attach the intercooler to the engine or chassis, facilitating efficient cooling of the compressed air between turbo stages.

Lifting Arrangement

For the lifting arrangement, the screw is crucial in securing lifting brackets and points, ensuring safe and stable engine handling during maintenance or transportation.

Lifting Bracket (Rear) Kit

In the rear lifting bracket kit, the screw is used to attach the brackets to the engine, providing secure points for lifting and moving the engine.

Oil Cooler Water Plumbing

Within the oil cooler water plumbing system, the screw secures the plumbing components to the engine, ensuring efficient heat exchange between the oil and coolant.

Rear Engine Support

In the rear engine support structure, the screw is used to attach the engine to the chassis, providing stability and reducing rearward engine movement.

Rear Gear Train Accessory Drive

For the rear gear train accessory drive, the screw mounts various accessories like the air conditioning compressor or alternator to the rear of the engine.

Shipping Bracket

During engine shipping, the screw is used to secure shipping brackets, ensuring the engine remains stable and protected during transit.

Starting Motor Mounting

For the starting motor, the screw is essential in mounting the motor to the engine, ensuring reliable starting functionality.

Water Inlet Connection

In the water inlet connection, the screw secures the water inlet pipe to the engine block, ensuring a leak-free connection and proper coolant flow.

Water Pump

Finally, for the water pump, the screw is used to attach the pump to the engine, ensuring it remains securely in place and functions efficiently to circulate coolant throughout the engine.

Conclusion

The Hexagon Flange Head Cap Screw part number 3093939 by Cummins is a critical component in the maintenance and operation of commercial trucks. Its design, featuring a hexagonal head and flange, ensures reliable fastening in demanding environments. Proper installation, regular maintenance, and understanding its compatibility with various Cummins engines are essential for ensuring the screw’s effectiveness and the overall integrity of the truck’s assemblies.