3093921
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3093921, is a component manufactured by Cummins, a well-established name in the automotive and heavy-duty truck industry. This screw is significant in heavy-duty truck applications due to its robust design and reliable performance. Cummins, known for its commitment to quality and innovation, produces this screw to meet the demanding requirements of truck mechanics and operations 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 additional surface area to distribute the load and prevent the screw from sinking into the material ². In a truck’s mechanical system, this screw plays a role in securing various components, ensuring they remain firmly in place under operational stress.

Purpose and Role in Truck Operation

The 3093921 Hexagon Flange Head Cap Screw is utilized in several critical applications within a truck’s mechanical system. It is commonly employed in the assembly of engine components, chassis parts, and other structural elements where high strength and reliability are required. By securing these components, the screw contributes to the overall stability and performance of the truck ³.

Key Features

The 3093921 Hexagon Flange Head Cap Screw boasts several key features that enhance its functionality and durability. Its hexagonal head design allows for precise torque application, ensuring that the screw is tightened to the correct specification. The flange characteristic provides additional bearing surface, which helps in distributing the load more evenly and reducing the risk of the screw pulling through the material. Additionally, the screw is made from high-quality materials, offering excellent resistance to corrosion and wear, which is vital in the harsh environments trucks often operate in.

Benefits

The benefits of using the 3093921 Hexagon Flange Head Cap Screw include enhanced durability, improved torque application, and resistance to loosening. The screw’s design and material properties ensure it can withstand significant stress and vibration, common in heavy-duty truck applications. The hexagonal head facilitates easy and accurate tightening, while the flange helps maintain the screw’s position, reducing the likelihood of it working loose over time.

Installation and Usage

Proper installation of the 3093921 Hexagon Flange Head Cap Screw is vital to ensure its effectiveness and longevity. It is recommended to use the appropriate torque specifications provided by Cummins to avoid over-tightening or under-tightening, both of which can lead to issues. Best practices include cleaning the installation area to remove any debris or contaminants that could affect the screw’s performance. Additionally, using a torque wrench ensures that the screw is tightened to the manufacturer’s recommended torque settings.

Troubleshooting and Maintenance

Common issues with the 3093921 Hexagon Flange Head Cap Screw may include loosening, corrosion, or damage from over-tightening. Regular inspection and maintenance can help identify these issues early. If a screw appears loose, it should be re-tightened to the correct torque specification. Corrosion can be addressed by cleaning the affected area and applying a suitable anti-corrosive treatment. Damaged screws should be replaced to maintain the integrity of the assembly.

Cummins Overview

Cummins is a renowned manufacturer in the automotive industry, with a history of producing high-quality components for heavy-duty applications. The company is known for its commitment to innovation, quality, and customer satisfaction. Cummins’ reputation is built on its ability to deliver reliable and durable products that meet the rigorous demands of the industry, making it a trusted name among professionals in the field.

Cummins Engine Part 3093921: Hexagon Flange Head Cap Screw

The Cummins part number 3093921, a Hexagon Flange Head Cap Screw, is a critical component used across various Cummins engine models. This screw is integral to the assembly and maintenance of several engine types, ensuring secure fastening and structural integrity.

Engine Models Utilizing Part 3093921

• 15N CM2380 M104B
• B3.3, B5.6 CM2670 B152B
• B6.7 CM2670 B153B
• D4.0 CM2620 D103B
• F3.8 CM2620 F137B
• F4.5 CM2620 F139B
• F4.5 CM2620 F141C
• ISB CM850
• ISB/ISD6.7 CM2150 SN
• ISB5.9 CM2880 B140
• ISB5.9 CM2880 B149
• ISBE CM2150
• ISBE4 CM850
• ISG11 CM2880 G108
• ISG12 CM2880 G107
• ISG12 G CMOH6.0 G111
• ISX CM570
• ISX12/ISX11.9 CM2250
• ISZ13 CM2150 Z105
• L9 CM2670 L128B
• QSB5.9 CM850
• QSC8.3 CM850 (CM2850)
• QSG12/X12 CM2350 G110
• QSK60 CM500

Application and Importance

The Hexagon Flange Head Cap Screw (part number 3093921) is designed to provide a robust fastening solution in various engine applications. Its flange head design allows for a larger bearing surface, distributing the load more evenly and reducing the risk of stripping or damaging the screw. This is particularly important in high-stress environments such as engine assemblies, where precise and reliable fastening is crucial.

The use of this screw across multiple engine models indicates its versatility and reliability in securing engine components. Whether it is used to fasten engine blocks, cylinder heads, or other critical parts, the Hexagon Flange Head Cap Screw ensures that these components remain securely in place under operational stresses.

Compatibility and Usage

The compatibility of part number 3093921 with a wide range of Cummins engines underscores its importance in the engine assembly and maintenance process. Technicians and engineers can rely on this screw to provide the necessary strength and durability required for various engine applications. Its use in both older and newer engine models highlights its enduring value and effectiveness in maintaining engine integrity.

Role of Part 3093921 Hexagon Flange Head Cap Screw in Engine Systems

The part 3093921 Hexagon Flange Head Cap Screw is instrumental in securing various components within engine systems, ensuring their stability and proper function. Here’s how it integrates with several key components:

Access Hole Cover

This screw is often used to secure the access hole cover, providing a tight seal that prevents contaminants from entering the engine while allowing for easy access when maintenance is required.

Accessory Drive

In accessory drive systems, the Hexagon Flange Head Cap Screw plays a role in attaching drive components to the engine block or housing, ensuring that these accessories operate efficiently and remain securely in place during engine operation.

Ball Plug

When used with ball plugs, this screw helps in maintaining the integrity of the seal, preventing leaks and ensuring that the engine operates within optimal parameters.

Breather

The screw is employed to fasten breather components, which are essential for releasing pressure build-up within the crankcase, thus maintaining a stable environment for engine operation.

Crankcase

Securing the crankcase components, the screw ensures that all parts remain aligned and function correctly, which is vital for the overall performance and longevity of the engine.

Camshaft Gear

In the camshaft gear assembly, this screw helps in attaching the gear to the camshaft, ensuring precise timing and smooth operation of the valve train.

Exhaust Cooler Leak Test Kit

For exhaust cooler systems, the screw is used to secure components of the leak test kit, ensuring that tests are conducted accurately and that any leaks are properly identified and addressed.

Exhaust Throttle Valve

The screw aids in the secure attachment of the exhaust throttle valve, which is crucial for managing exhaust flow and improving engine efficiency.

Filter

In fuel and air filter assemblies, this screw is used to hold the filter housing in place, ensuring that the filter performs its role effectively in cleaning the fuel or air before it enters the engine.

Fuel System Components

Within the fuel system, including the fuel filter and fuel pump, the screw ensures that all components are tightly secured, preventing leaks and ensuring consistent fuel delivery.

Governor and Electronic Control Modules

For governors and electronic engine control modules, the screw is vital in securing these components to the engine, ensuring they operate within specified parameters and contribute to efficient engine management.

Front and Idler Gears

In gear systems, including front and idler gears, the screw ensures that gears are properly aligned and secured, which is essential for the transmission of power within the engine.

Rocker Levers and Shafts

The screw is used to secure rocker levers and their shafts, ensuring that valve operation is precise and reliable, which is fundamental for engine performance.

Heat Shield

In heat shield applications, the screw helps in attaching the shield to the engine, protecting nearby components from excessive heat and ensuring the engine operates within safe temperature ranges.

Turbocharger and Its Components

For turbochargers and their associated plumbing and coolant systems, the screw ensures that all components are securely fastened, contributing to the efficient operation and durability of the turbocharger.

Conclusion

The 3093921 Hexagon Flange Head Cap Screw is a vital component in the automotive and heavy-duty truck industry, providing robust and reliable fastening solutions across various engine models. Its design, featuring a hexagonal head and flange, ensures efficient torque application and load distribution, making it indispensable in high-stress environments. Proper installation and maintenance are crucial to leveraging its full benefits, ensuring the longevity and performance of the engine systems it supports.