3093937
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3093937, is a component manufactured by Cummins, a prominent name in the commercial truck industry. This screw plays a significant role in the assembly and operation of commercial trucks, ensuring secure fastening and reliable performance under demanding conditions.

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 additional surface area for load distribution and prevents the screw from sinking into the material. In a truck’s assembly, this screw is used to join various components securely, ensuring structural integrity and operational reliability ¹.

Purpose and Role

The 3093937 Hexagon Flange Head Cap Screw is designed to fasten critical components within a truck’s structure. It is commonly used in applications where high tensile strength and resistance to loosening are required. Typical uses include securing engine components, transmission parts, and chassis elements. Its role is to provide a robust connection that can withstand vibrations and dynamic loads experienced during truck operation ².

Key Features

The 3093937 Hexagon Flange Head Cap Screw features a hexagonal head that facilitates easy and precise tightening with standard wrenches or sockets. The flange beneath the head enhances the screw’s load-bearing capacity and prevents it from embedding into the fastened material. Additionally, the screw is crafted from high-quality materials, ensuring durability and resistance to corrosion, which is vital for long-term performance in harsh operating environments ³.

Benefits

Using the 3093937 Hexagon Flange Head Cap Screw offers several advantages. The hexagonal head design allows for efficient and consistent torque application, reducing the risk of over-tightening or under-tightening. The flange provides enhanced stability and improved load distribution, which helps maintain the integrity of the fastened components. Furthermore, the screw’s resistance to loosening ensures that connections remain secure throughout the truck’s operational life, contributing to overall safety and reliability ⁴.

Installation and Usage

Proper installation of the 3093937 Hexagon Flange Head Cap Screw is crucial for optimal performance. It should be installed using the correct torque specifications provided by the manufacturer to ensure a secure yet non-damaging connection. Best practices include using a torque wrench to apply the specified torque and periodically checking the fastener to ensure it remains tight. Additionally, ensuring that mating surfaces are clean and free of debris will enhance the screw’s performance and longevity.

Troubleshooting and Maintenance

Common issues with the 3093937 Hexagon Flange Head Cap Screw may include loosening due to vibrations or corrosion over time. Regular inspection and maintenance can help identify and address these issues promptly. If loosening is detected, re-tightening the screw to the specified torque is recommended. In cases of corrosion, cleaning the affected area and applying a suitable anti-corrosion treatment can help prevent further degradation. Routine checks during maintenance intervals will ensure the screw continues to perform reliably.

Cummins Overview

Cummins is a well-established manufacturer with a rich history in the commercial truck industry. The company offers a wide range of products, including engines, powertrain components, and aftermarket parts, known for their quality and performance. Cummins’ reputation for reliability and innovation makes it a preferred choice among truck manufacturers and fleet operators, ensuring that their components, like the 3093937 Hexagon Flange Head Cap Screw, meet the high standards required for commercial applications.

Hexagon Flange Head Cap Screw (Part 3093937) in Cummins Engines

The Hexagon Flange Head Cap Screw, identified by the part number 3093937, is a critical component in various Cummins engines. This screw is designed to provide a secure fastening solution, ensuring that components remain tightly connected under operational stresses. Here is a detailed look at how this part integrates with different Cummins engines:

B3.3 Series Engines

• B3.3 CM2150
• B3.3 CM2250 EC

The 3093937 screw is utilized in the B3.3 series engines to secure various components, ensuring that parts such as covers and housings remain firmly attached. This is crucial for maintaining the integrity of the engine’s structure and preventing leaks or failures.

ISG12 Series Engines

• ISG12 CM2880 G107
• ISG12 G CMOH6.0 G111

In the ISG12 series, the 3093937 screw is used to fasten components that require a robust connection. This includes securing the engine’s outer casings and other critical parts that are exposed to high operational stresses.

ISX Series Engines

• ISX CM570

For the ISX series, the 3093937 screw is employed in areas where a strong and reliable fastening is necessary. This includes securing various engine covers and housings that are integral to the engine’s operation.

QSB Series Engines

• QSB3.3 CM2150
• QSB3.3 CM2250 EC
• QSB6.7 CM2250
• QSB6.7 M CM2250

In the QSB series, the 3093937 screw is used to fasten components such as engine covers, housings, and other critical parts. This ensures that these components remain securely attached, even under high operational stresses.

QSG Series Engines

• QSG12 CM2880 G112
• QSG12/X12 CM2350 G110

The 3093937 screw is used in the QSG series to secure various engine components, ensuring that parts such as covers and housings remain firmly attached. This is essential for maintaining the engine’s structural integrity.

QSK Series Engines

• QSK19 CM2350 K105
• QSK19 CM2350 K114
• QSK19 CM850 MCRS
• QSK38 CM2150 MCRS
• QSK38 CM850 MCRS
• QSK45 CM500
• QSK50 CM2150 K107
• QSK50 CM2150 MCRS
• QSK50 CM2350 K108
• QSK60 CM500
• QSK60 CM850 MCRS
• QSK60G
• QSK78 CM500
• QSK95 CM2350 K111
• QSK95 CM2350 K113

In the QSK series, the 3093937 screw is used to secure various components, including engine covers, housings, and other critical parts. This ensures that these components remain securely attached, even under high operational stresses. The screw’s design allows for a robust and reliable fastening, which is crucial for the engine’s performance and longevity.

Role of Part 3093937 Hexagon Flange Head Cap Screw in Engine Systems

The part 3093937 Hexagon Flange Head Cap Screw is integral to the assembly and functionality of various engine components. Its robust design and secure fastening capabilities make it suitable for multiple applications within engine systems.

Alternator Drive

In the alternator drive system, the Hexagon Flange Head Cap Screw is used to secure the alternator to the engine block. This ensures that the alternator remains firmly in place, allowing it to efficiently convert mechanical energy into electrical energy to power the vehicle’s electrical systems.

Auxiliary Pump Plumbing

For auxiliary pump plumbing, this screw plays a role in attaching pump components to the engine block or other structural elements. It ensures that the plumbing remains intact under pressure, contributing to the reliable operation of the auxiliary pump system.

Charge Air Bypass Plumbing

In charge air bypass systems, the screw is employed to fasten bypass valves and plumbing components. This secure attachment is essential for maintaining the integrity of the charge air system, ensuring optimal airflow and performance.

Crankcase Breather

The crankcase breather system utilizes the Hexagon Flange Head Cap Screw to attach breather components to the engine block. This helps in venting crankcase gases effectively, maintaining a clean and efficient engine environment.

Cylinder Block Plumbing

For cylinder block plumbing, the screw is used to secure various plumbing connections. This ensures that coolant and oil pathways remain sealed and functional, contributing to the overall thermal management of the engine.

Cylinder Liner Replacer

When replacing cylinder liners, the Hexagon Flange Head Cap Screw is used to secure the liner in place. This ensures a tight fit, preventing any leaks and maintaining the structural integrity of the cylinder block.

Electrical Accessories

In the installation of electrical accessories, such as sensors and wiring harnesses, this screw provides a reliable fastening solution. It ensures that these components remain securely attached, even under vibration and harsh conditions.

Electronic Control Module Wiring Harness

The wiring harness for the electronic control module (ECM) often requires secure attachment points. The Hexagon Flange Head Cap Screw is used to fasten the harness to the engine or chassis, ensuring a stable and reliable connection.

Engine Control Module

For the engine control module (ECM) mounting, this screw is used to attach the ECM to its designated location. This secure attachment is vital for the ECM to function correctly, as it controls various engine parameters.

Front Gear Cover

The front gear cover of the engine is often fastened using the Hexagon Flange Head Cap Screw. This ensures that the cover remains securely in place, protecting the internal components from contaminants and damage.

Fuel Drain Plumbing

In fuel drain systems, the screw is used to secure plumbing components. This ensures that the fuel drain system operates efficiently, allowing for safe and effective fuel management.

Fuel Plumbing

For fuel plumbing, the screw is employed to attach fuel lines and fittings. This secure attachment is essential for maintaining the integrity of the fuel system, ensuring a consistent fuel supply to the engine.

Fuel Pump

The fuel pump assembly often requires secure fastening, and the Hexagon Flange Head Cap Screw is used for this purpose. It ensures that the fuel pump remains firmly in place, contributing to reliable fuel delivery.

Guard Package

In guard packages, which protect various engine components, the screw is used to attach guards and shields. This ensures that these protective elements remain in place, safeguarding the engine from debris and damage.

Ignition System

For the ignition system, the screw is used to secure ignition components such as coils and distributors. This ensures that the ignition system functions reliably, contributing to consistent engine performance.

Lubricating Oil Filter

The lubricating oil filter is often attached using the Hexagon Flange Head Cap Screw. This secure attachment ensures that the oil filter remains in place, allowing for effective filtration of engine oil.

Oil Pan

The oil pan, which houses the engine’s lubricant, is often fastened using this screw. This ensures that the oil pan remains securely attached, preventing oil leaks and maintaining engine lubrication.

Turbocharger

In turbocharger systems, the screw is used to secure turbocharger components to the engine. This ensures that the turbocharger operates efficiently, contributing to enhanced engine performance.

Turbocharger Gasket Kit

For turbocharger gasket kits, the screw is used to secure gaskets in place. This ensures a proper seal, preventing leaks and maintaining the efficiency of the turbocharger system.

Turbocharger Kit

In comprehensive turbocharger kits, the screw is used to attach various components. This ensures that the turbocharger system is securely assembled, contributing to reliable performance.

Turbocharger Oil Plumbing

For turbocharger oil plumbing, the screw is used to secure oil lines and fittings. This ensures that the oil supply to the turbocharger remains consistent, contributing to its efficient operation.

Turbocharger Plumbing

In turbocharger plumbing systems, the screw is used to attach plumbing components. This ensures that the turbocharger system operates efficiently, maintaining optimal performance.

Valve Cover

The valve cover, which protects the engine’s valvetrain, is often fastened using the Hexagon Flange Head Cap Screw. This ensures that the valve cover remains securely in place, protecting the internal components.

Wiring Accessories

For wiring accessories, such as connectors and terminals, the screw provides a reliable fastening solution. This ensures that wiring components remain securely attached, contributing to the overall electrical integrity of the engine system.

Conclusion

The 3093937 Hexagon Flange Head Cap Screw is a vital component in the assembly and operation of Cummins engines. Its robust design, secure fastening capabilities, and resistance to corrosion make it suitable for a wide range of applications within engine systems. Proper installation and maintenance of this screw ensure that engine components remain securely attached, contributing to the overall reliability and performance of the engine.