3917728
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw Fastener, identified by part number 3917728, is a component manufactured by Cummins, a well-established name in the automotive industry. This fastener plays a significant role in the maintenance and assembly of commercial trucks, ensuring the integrity and functionality of various truck components.

Basic Concepts

A Hexagon Flange Head Cap Screw Fastener is a type of bolt characterized by its hexagonal head and flanged base. The hexagonal head allows for easy tightening and loosening using a wrench or socket, while the flange provides additional surface area to distribute the load and prevent the screw from pulling through the material. Within a truck’s assembly, this fastener secures components together, ensuring they remain in place under various operational stresses ¹.

Purpose and Role in Truck Operation

The 3917728 Hexagon Flange Head Cap Screw Fastener is designed to secure critical components within a commercial truck. Its role is to maintain the structural integrity of assemblies, ensuring that parts remain firmly attached under dynamic conditions. This fastener contributes to the overall functionality and safety of the vehicle by preventing component detachment and ensuring that systems operate as intended ².

Key Features

The 3917728 Hexagon Flange Head Cap Screw Fastener boasts several key features that enhance its performance. Its design includes a hexagonal head for easy manipulation with standard tools and a flanged base that provides additional stability. The fastener is typically made from high-strength materials, ensuring durability and resistance to corrosion. Additionally, it may feature threading that allows for secure fastening without stripping, and a finish that protects against environmental factors ³.

Benefits

Using the 3917728 Hexagon Flange Head Cap Screw Fastener offers several benefits. Its durable construction ensures long-lasting performance, while its resistance to vibration helps maintain a secure fit over time. The ease of installation, thanks to its hexagonal head, allows for quick and efficient assembly. Furthermore, its design helps distribute loads evenly, reducing the risk of component failure.

Installation Process

Proper installation of the 3917728 Hexagon Flange Head Cap Screw Fastener involves several steps. Begin by ensuring the mating surfaces are clean and free of debris. Use a wrench or socket to start the screw by hand, ensuring it is aligned correctly. Once started, continue tightening until the flange is flush with the surface, using a torque wrench to achieve the manufacturer’s specified torque setting. This ensures a secure fastening without over-tightening, which could damage the fastener or the components being joined.

Troubleshooting and Maintenance

Common issues with the 3917728 Hexagon Flange Head Cap Screw Fastener may include loosening due to vibration or corrosion. Regular inspections can help identify problems early. If corrosion is detected, cleaning the affected area and applying a corrosion-resistant coating can help. For loosening, re-tightening to the specified torque setting is recommended. Maintenance tips include periodic checks for tightness and condition, especially in high-stress areas.

Safety Considerations

When handling and installing the 3917728 Hexagon Flange Head Cap Screw Fastener, it is important to observe several safety guidelines. Wear appropriate personal protective equipment, such as gloves and safety glasses, to protect against injury. Ensure that tools are in good condition and used correctly to avoid accidents. Follow the manufacturer’s torque specifications to prevent over-tightening, which could lead to component damage or failure.

Cummins Overview

Cummins is a reputable manufacturer in the automotive industry, known for producing high-quality components for commercial vehicles. With a history of innovation and commitment to excellence, Cummins has established itself as a leader in the field. Their components, including the 3917728 Hexagon Flange Head Cap Screw Fastener, are designed to meet rigorous standards, ensuring reliability and performance in demanding applications.

Compatibility with Cummins Engines

The Hexagon Flange Head Cap Screw Fastener (Part 3917728) manufactured by Cummins is a versatile component designed to fit a variety of Cummins engines. This part is integral in securing various engine components, ensuring structural integrity and operational efficiency. Below is a detailed breakdown of its compatibility across different engine models:

ISC Series Engines

• ISC CM2150
• ISC CM554
• ISC CM850

The ISC series engines, including the ISC CM2150, ISC CM554, and ISC CM850, utilize the Hexagon Flange Head Cap Screw Fastener in several critical applications. This part is often used in securing engine covers, brackets, and other structural components, ensuring that these parts remain firmly in place during operation.

ISL Series Engines

• ISL CM2150
• ISL CM554
• ISL9 CM2150 SN

The ISL series engines, such as the ISL CM2150, ISL CM554, and ISL9 CM2150 SN, also benefit from the use of this fastener. It is commonly employed in fastening engine covers, valve covers, and other critical components, providing the necessary strength and reliability to withstand the rigors of engine operation.

ISM Series Engines

• ISM CM570
• ISM CM570/870

In the ISM series, the ISM CM570 and ISM CM570/870 engines incorporate the Hexagon Flange Head Cap Screw Fastener in various applications. This part is essential for securing engine covers, brackets, and other structural elements, ensuring that these components remain securely fastened under operational conditions.

M11 Series Engines

• M11 CELECT
• M11 CELECT PLUS

The M11 CELECT and M11 CELECT PLUS engines also utilize this fastener. It is used in securing various engine components, including engine covers and brackets, ensuring that these parts remain firmly attached during operation.

QSC and QSL Series Engines

• QSC8.3 CM554
• QSC8.3 CM850 (CM2850)
• QSL9 CM554
• QSL9 CM850 (CM2850)

The QSC and QSL series engines, such as the QSC8.3 CM554, QSC8.3 CM850 (CM2850), QSL9 CM554, and QSL9 CM850 (CM2850), incorporate the Hexagon Flange Head Cap Screw Fastener in several applications. This part is crucial for securing engine covers, brackets, and other structural components, ensuring that these parts remain securely fastened during operation.

C Series Engines

• C GAS PLUS CM556
• C8.3 G
• G8.3
• L GAS PLUS CM556

The C series engines, including the C GAS PLUS CM556, C8.3 G, G8.3, and L GAS PLUS CM556, also utilize this fastener. It is used in securing various engine components, ensuring that these parts remain firmly attached during operation.

QSM Series Engines

• QSM11 CM570

The QSM11 CM570 engine incorporates the Hexagon Flange Head Cap Screw Fastener in several critical applications. This part is essential for securing engine covers, brackets, and other structural elements, ensuring that these components remain securely fastened under operational conditions.

The Hexagon Flange Head Cap Screw Fastener (Part 3917728) is a critical component in ensuring the structural integrity and operational efficiency of these Cummins engines. Its use across various engine models highlights its versatility and importance in maintaining the reliability and performance of these engines.

Role in Engine Systems

The 3917728 Hexagon Flange Head Cap Screw Fastener is instrumental in securing various components within engine systems. Its primary function is to provide a robust and reliable fastening solution that ensures the integrity and stability of engine assemblies.

Cylinder Block and Cylinder Head Assembly

In the cylinder block, this fastener is often used to secure the cylinder head to the block itself. The flange head design offers additional surface area for distribution of clamping force, which is essential for maintaining a proper seal between the cylinder head and the block. This seal is vital for preventing coolant and oil leaks, as well as ensuring efficient combustion by maintaining compression within the cylinders.

Head and Cylinder Alignment

When aligning the head with the cylinder, the Hexagon Flange Head Cap Screw Fastener plays a significant role. Its design allows for precise torque application, which is necessary for achieving the manufacturer’s specified clamping force. This ensures that the head is evenly seated on the block, which is crucial for the engine’s performance and longevity.

Lever and Rocker Arm Installation

In systems involving levers and rocker arms, this fastener is used to secure these components to the cylinder head. The flange head provides a broad contact area, which helps in distributing the load evenly and reducing the risk of component failure under dynamic engine conditions.

Long Block and Short Block Applications

For both long block and short block assemblies, the part 3917728 is commonly employed to fasten various components. In a short block, which includes the cylinder block, crankshaft, pistons, and connecting rods, these fasteners may be used to secure ancillary components such as balance shafts or oil pump mounts. In a long block, which additionally includes the cylinder head and valve train, these fasteners are critical for securing the head, intake and exhaust manifolds, and other upper engine components.

Repair Kit and Performance Kit Integration

When integrating repair kits or performance kits, the Hexagon Flange Head Cap Screw Fastener ensures that newly installed components are securely fastened. For instance, in a repair kit that includes gaskets and seals, these fasteners help in achieving the necessary compression for these seals to function effectively. In performance kits, where components may be subjected to higher stresses, the robust design of this fastener provides the reliability needed to withstand increased loads and vibrations.

Ford Dealer and Component Sourcing

Ford dealers and other automotive parts suppliers often recommend this fastener for various engine repairs and upgrades. Its widespread use across different engine systems underscores its versatility and reliability in maintaining the structural integrity of engine assemblies.

Conclusion

The 3917728 Hexagon Flange Head Cap Screw Fastener is a versatile and essential component in engine systems, providing the necessary clamping force and reliability to secure a wide range of engine components. Its use in various Cummins engines highlights its importance in maintaining the structural integrity and operational efficiency of these engines.

References