4948109
Hexagon Head Cap Screw
Cummins®

The 4948109 Hexagon Head Cap Screw is a component manufactured by Cummins, a well-established name in the commercial truck industry. This screw is designed for use in various applications within commercial trucks, contributing to the secure assembly of components and the overall reliability of truck operations.

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 mechanical assemblies to secure components together. They function by providing a strong, threaded connection that can withstand significant loads and vibrations, ensuring that parts remain firmly in place ¹.

Purpose of the 4948109 Hexagon Head Cap Screw in Truck Operation

This Cummins part plays a role in the operation and maintenance of commercial trucks by securing various components within the truck’s structure. It is applied in areas where robust fastening is required to ensure the integrity and safety of the truck’s assemblies. Its importance lies in its ability to maintain secure connections under the demanding conditions typical of commercial truck use.

Key Features

The 4948109 Hexagon Head Cap Screw is distinguished by several key features that enhance its performance and durability. Its design includes a hexagonal head for easy manipulation with standard tools, and it is made from materials that offer high strength and resistance to corrosion. These attributes ensure that the screw can perform reliably in the harsh environments often encountered by commercial trucks ².

Benefits

This part offers several benefits that contribute to its effectiveness in truck applications. These include improved reliability due to its strong material composition, ease of installation thanks to its hexagonal head, and resistance to loosening under vibration, which is crucial for maintaining secure fastenings in dynamic truck operations.

Installation and Usage

Proper installation of the 4948109 Hexagon Head Cap Screw involves adhering to specific torque specifications to ensure secure fastening without over-tightening, which could damage the screw or the components being joined. Best practices include using the correct tools and following manufacturer guidelines to achieve the optimal balance of tightness and durability ³.

Troubleshooting and Maintenance

Common issues with the 4948109 Hexagon Head Cap Screw, such as loosening or corrosion, can often be addressed through regular inspection and maintenance. Ensuring that screws are tightened to the correct specifications and protecting them from environmental factors can help prolong their service life and maintain the integrity of truck assemblies.

Cummins: Manufacturer Overview

Cummins Inc. is a leading manufacturer in the commercial truck industry, known for its wide range of products and commitment to quality and reliability. The company’s history and reputation underscore the trust placed in its components, including the 4948109 Hexagon Head Cap Screw, by professionals in the trucking industry.

Compatibility with Cummins Engines

This Cummins part is designed to fit seamlessly with a variety of Cummins engines. It is integral in securing various components within the engine assembly, ensuring structural integrity and operational efficiency.

Compatibility with Specific Engines

• 4B3.9: The 4948109 screw is used in the 4B3.9 engine for securing critical engine components. Its robust design ensures that it can withstand the operational stresses within this engine model.

• F4.5 CM2620 F139B: This screw is also compatible with the F4.5 CM2620 F139B engine. Its application in this engine is crucial for maintaining the alignment and stability of engine parts.

• ISB/ISD 4.5 CM2150 B119: The 4948109 screw is utilized in the ISB/ISD 4.5 CM2150 B119 engine. It plays a key role in fastening components that are subject to high torque and pressure.

• ISB 3.9 CM2220 B107: In the ISB 3.9 CM2220 B107 engine, this screw is used for securing parts that require precise alignment and fastening. Its design ensures that it can handle the operational demands of this engine model.

• ISBE CM2150: The 4948109 screw is compatible with the ISBE CM2150 engine. It is used for fastening components that are critical to the engine’s performance and longevity.

• ISBE4 CM850: This screw is also suitable for the ISBE4 CM850 engine. Its application in this engine ensures that the components it secures remain firmly in place, contributing to the engine’s overall efficiency.

Role of 4948109 in Engine Systems

In the intricate assembly of engine systems, the 4948109 Hexagon Head Cap Screw serves as a fundamental fastening component, ensuring the secure attachment of various parts. Its application spans across multiple engine components, contributing to the overall stability and functionality of the system.

Compressor Assembly

Within the compressor assembly, the 4948109 Hexagon Head Cap Screw is employed to fasten critical components such as the compressor housing to its mounting bracket. This secure attachment is vital for maintaining the structural integrity of the compressor, allowing it to operate efficiently under varying load conditions. The screw’s hexagonal head design facilitates easy tightening and loosening, ensuring that maintenance procedures are streamlined.

Refrigerant System Integration

In the refrigerant system, the 4948109 Hexagon Head Cap Screw plays a role in securing fittings and connections that are essential for the proper flow of refrigerant. It is used to attach refrigerant lines to the compressor and other system components, ensuring a leak-free seal. This is particularly important in maintaining the system’s efficiency and preventing refrigerant loss, which could lead to decreased performance and increased environmental impact.

Mounting Applications

The screw is also utilized in mounting applications throughout the engine system. It secures the compressor to the engine block or frame, ensuring that the compressor remains stable during operation. This stability is essential for the compressor’s performance, as any movement could lead to misalignment and subsequent mechanical issues.

Overall System Stability

Across these applications, the 4948109 Hexagon Head Cap Screw contributes to the overall stability and reliability of the engine system. Its role in fastening and securing components ensures that the system can operate under the demanding conditions typical of engine environments. The screw’s design and material properties are selected to withstand the stresses and vibrations inherent in engine operation, making it a reliable choice for these critical fastening applications.

Conclusion

The 4948109 Hexagon Head Cap Screw is a vital component in the maintenance and operation of commercial trucks and Cummins engines. Its design, material properties, and compatibility with various engine models make it an essential part for ensuring the secure assembly of components and the overall reliability of truck and engine operations.