3093745
Hexagon Head Cap Screw
Cummins®

The 3093745 Hexagon Head Cap Screw, manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. Cummins, a well-established name in the automotive industry, produces this component to meet the rigorous demands of heavy-duty applications. This screw is integral to the assembly and maintenance of various truck components, ensuring secure and reliable fastening in challenging operational environments.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is a type of fastener characterized by its hexagonal head, which allows for efficient tightening and loosening using a wrench or socket. These screws are commonly used in fastening applications where a high level of torque is required. Mechanically, the hexagonal shape of the head provides a stable interface for tools, reducing the risk of cam-out and ensuring consistent torque application. The cap, or the underhead, typically features a countersunk design that allows the screw to sit flush with or below the surface of the material being fastened, enhancing both aesthetics and functionality ¹.

Purpose of the 3093745 Hexagon Head Cap Screw in Truck Operations

The 3093745 Hexagon Head Cap Screw plays a significant role in the operation and maintenance of commercial trucks. It is utilized in various truck components, including engine mounts, chassis assemblies, and body panels. Its primary function is to provide a secure and durable connection between parts, ensuring that they remain firmly attached under the dynamic loads and vibrations experienced during truck operation. This screw is particularly valuable in applications where disassembly and reassembly are frequent, as its design facilitates easy installation and removal without compromising the integrity of the fastening ².

Key Features

The 3093745 Hexagon Head Cap Screw boasts several key features that enhance its performance and durability. Its design includes a hexagonal head for reliable tool engagement and a countersunk cap for a smooth surface finish. The screw is crafted from high-strength materials, typically alloy steel, to withstand the substantial stresses encountered in commercial truck applications. Additionally, it may feature a corrosion-resistant coating, such as zinc plating, to protect against environmental factors that could lead to rust and degradation ³.

Benefits

Using the 3093745 Hexagon Head Cap Screw offers several benefits. Its high-strength material and precise manufacturing ensure improved reliability, reducing the likelihood of failure under load. The hexagonal head design allows for ease of installation, enabling technicians to achieve the required torque with minimal effort. Furthermore, the corrosion-resistant coating enhances the screw’s longevity, protecting it from the adverse effects of moisture and chemicals commonly encountered in truck operations ⁴.

Installation and Usage

Proper installation of the 3093745 Hexagon Head Cap Screw is crucial for ensuring a secure fit and optimal performance. It is recommended to use the appropriate wrench or socket to achieve the specified torque settings, which can typically be found in the manufacturer’s guidelines or the vehicle’s service manual. Careful attention should be paid to the alignment of the screw and the components being fastened to prevent cross-threading and ensure a uniform load distribution. Additionally, using a thread lubricant can facilitate easier installation and help prevent galling, especially in high-torque applications.

Troubleshooting and Maintenance

Common issues with the 3093745 Hexagon 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-tightening to the specified torque settings is recommended. In cases of corrosion, the affected screw should be replaced to maintain the integrity of the fastening. Proper maintenance, including keeping the screw and surrounding areas clean and dry, can help prevent these issues and ensure longevity.

Cummins: Manufacturer Overview

Cummins is a renowned manufacturer with a rich history in the automotive industry. Established in 1919, Cummins has built a reputation for quality and innovation in engine and component manufacturing. The company is committed to delivering reliable and high-performance products that meet the demanding requirements of commercial and industrial applications. Cummins’ dedication to research and development ensures that their components, including the 3093745 Hexagon Head Cap Screw, are at the forefront of technological advancement and durability.

Hexagon Head Cap Screw 3093745 in Cummins Engines

The Cummins Hexagon Head Cap Screw part number 3093745 is a critical component in several of Cummins’ engine models. This screw is integral to the assembly and maintenance of the engines, ensuring structural integrity and operational efficiency.

QSK19 CM850 MCRS and QST30 CM2350 T101

In the QSK19 CM850 MCRS and QST30 CM2350 T101 engines, the 3093745 screw is utilized in various applications where secure fastening is essential. These engines, known for their robust performance, rely on this screw to maintain the alignment and stability of critical components. The screw’s design, with its hexagonal head, allows for easy and efficient tightening using standard tools, ensuring that the engine’s parts remain securely fastened under operational stresses.

QST30 CM552

Similarly, in the QST30 CM552 engine, the 3093745 screw plays a vital role in the assembly process. This engine, designed for high-performance applications, requires reliable fastening solutions to handle the dynamic forces encountered during operation. The screw’s precision engineering ensures that it can withstand the rigors of the engine environment, contributing to the overall durability and longevity of the engine.

Common Applications

Across these engines, the 3093745 screw is often used in applications such as securing engine covers, mounting brackets, and other structural components. Its use in these areas is critical for maintaining the engine’s structural integrity and ensuring that all parts function as intended. The screw’s compatibility with Cummins’ stringent quality standards ensures that it performs reliably in demanding conditions.

Role of Part 3093745 Hexagon Head Cap Screw in Engine Systems

The 3093745 Hexagon Head Cap Screw is integral to the assembly and functionality of various engine components. Its robust design ensures secure fastening, which is essential for maintaining the integrity and performance of the engine system.

Aftercooler and Turbocharger Arrangement

In the aftercooler and turbocharger arrangement, the Hexagon Head Cap Screw is used to fasten components that facilitate the cooling of compressed air from the turbocharger. This ensures efficient air-fuel mixing and combustion, contributing to engine performance and durability.

Coolant Heater Starting Aid and Connections

For the coolant heater starting aid, this screw plays a role in securing the connections that allow for preheating of the engine coolant. This is particularly important in cold climates, where it aids in quicker engine start-ups and reduces wear on engine components during startup.

Cylinder Block and Crankcase

Within the cylinder block and crankcase, the Hexagon Head Cap Screw is employed to secure critical components such as the lubricating oil pump and the oil level gauge. This ensures that these components remain firmly in place, allowing for accurate oil level readings and consistent lubrication throughout the engine.

Breather and Oil Systems

In the breather and crankcase ventilation system, this screw helps in securing the connections that allow for the release of pressure and contaminants from the crankcase. This is vital for maintaining clean oil and preventing buildup of sludge, which can impair engine performance.

Aftertreatment Catalyst Inlet and Exhaust Outlet

At the aftertreatment catalyst inlet and exhaust outlet, the Hexagon Head Cap Screw is used to secure components that are part of the emissions control system. This ensures that the system operates efficiently, reducing harmful emissions and complying with environmental regulations.

Engine Oil and Lubricating Systems

In the engine oil and lubricating systems, this screw is crucial for fastening components such as the oil cooler and the lubricating oil pump. This ensures that oil is circulated effectively throughout the engine, providing necessary lubrication to moving parts and reducing friction and wear.

Auxiliary Cooling System

Within the auxiliary cooling system, the Hexagon Head Cap Screw is used to secure components that help in maintaining optimal operating temperatures for the engine. This includes securing connections in the raw water pump and the decomposition reactor, ensuring that these systems function correctly and contribute to the overall efficiency of the engine.

Fuel Filter and Plumbing

In the fuel filter and associated plumbing, this screw is employed to secure connections that ensure clean fuel delivery to the engine. This is essential for maintaining combustion efficiency and preventing damage to fuel injectors and other sensitive components.

Conclusion

The 3093745 Hexagon Head Cap Screw is a critical component in the assembly and maintenance of commercial trucks and Cummins engines. Its robust design, high-strength material, and corrosion-resistant coating ensure secure fastening and reliable performance in demanding applications. Proper installation and maintenance are essential to maximize the benefits of this screw, contributing to the overall durability and efficiency of the engine system.