3919995
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by Part #3919995, is a component manufactured by Cummins, a well-established name in the automotive and heavy-duty truck industry. This screw is significant in commercial trucks due to its robust design and reliable performance. Cummins, known for its commitment to quality and innovation, produces this part to meet the demanding requirements of truck mechanics and operators.

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 load and prevent the screw from sinking into the material. Within a truck’s mechanical system, this screw plays a role in securing various components, ensuring they remain firmly in place under operational stress.

Role and Purpose

The Hexagon Flange Head Cap Screw serves multiple functions in the operation of a truck. It is commonly used in applications where a combination of high strength and resistance to loosening is required. This includes fastening engine components, transmission parts, and chassis elements. The screw’s design ensures that critical components are securely attached, contributing to the overall reliability and safety of the truck.

Key Features

Several key features distinguish the Hexagon Flange Head Cap Screw. The hexagonal head design allows for precise and consistent torque application, reducing the risk of over-tightening or stripping. The flange beneath the head provides additional bearing surface, which helps in distributing the load more evenly and prevents the screw from pulling through the material. Additionally, the material properties of the screw, typically high-grade steel, offer excellent durability and resistance to corrosion, making it suitable for the harsh environments trucks often operate in.

Benefits

Using a Hexagon Flange Head Cap Screw offers several benefits. Its design contributes to durability, ensuring long-term performance even under demanding conditions. The resistance to loosening provided by the flange reduces the need for frequent re-tightening, saving time during maintenance. Furthermore, the ease of installation, thanks to the hexagonal head, allows for quick and efficient fastening, which is particularly valuable in commercial truck maintenance scenarios.

Installation and Usage

Proper installation of the Hexagon Flange Head Cap Screw is vital to ensure its effectiveness. It should be installed using the appropriate torque specifications to avoid over-tightening, which can lead to damage, or under-tightening, which can compromise security. In truck maintenance and repair scenarios, it is important to use the correct tools and follow manufacturer guidelines to achieve the desired fastening strength and reliability.

Troubleshooting and Maintenance

Common issues with the Hexagon Flange Head Cap Screw may include loosening over time or corrosion in harsh environments. Regular inspection during maintenance checks can help identify these issues early. If loosening is detected, re-tightening to the specified torque is recommended. In cases of corrosion, replacing the screw may be necessary to maintain performance and safety. Proper maintenance practices, such as applying anti-seize compound where appropriate, can help extend the longevity and performance of the screw.

Cummins Overview

Cummins is a renowned manufacturer in the automotive and heavy-duty truck industry, with a history of producing high-quality components. The company is recognized for its commitment to innovation and excellence, providing solutions that meet the rigorous demands of commercial trucking. Cummins’ reputation is built on a foundation of reliability, performance, and customer satisfaction, making it a trusted name among truck operators and mechanics.

Hexagon Flange Head Cap Screw 3919995 in Cummins Engines

This Cummins part is a critical component used across a variety of Cummins engine models. This screw is designed to provide secure fastening in applications where high strength and durability are required. It is commonly used in engine assemblies to ensure that parts remain tightly secured under the operational stresses of the engine.

Application in Cummins Engines

4B3.9, 6B5.9, B4.5, B5.9 G, B5.9 GAS PLUS CM556, B6.7 CM2670 B153B, B6.7 CM2670 B164C, ISB/ISD4.5 CM2150 B119, ISB/ISD6.7 CM2150 SN, ISB3.9 CM2220 B107, ISB5.9G CM2180, ISB6.7 G CM2180 B118, ISBE CM2150, ISBE4 CM850, ISD4.5 CM2220 D108, QSB3.9 30 CM550, QSB4.5 CM850(CM2850), QSB5.9 30 CM550, QSB5.9 CM550, QSB5.9G, QSB6.7 CM850(CM2850), QSB6.7 M CM2250, QSB7 CM2880 B117, QSC8.3 CM850(CM2850), QSL8.9 CM2150 L141

This screw is integral to the assembly and maintenance of these engines, ensuring that various components are fastened securely. The engines listed above span a range of applications, from industrial to heavy-duty commercial use, and each requires reliable fastening solutions to maintain operational integrity.

Grouping by Engine Series

• 4.5L Engines:

  • 4B3.9
  • B4.5
  • ISB/ISD4.5 CM2150 B119
  • ISD4.5 CM2220 D108
  • QSB3.9 30 CM550
  • QSB4.5 CM850(CM2850)

• 5.9L Engines:

  • 6B5.9
  • B5.9 G
  • B5.9 GAS PLUS CM556
  • ISB5.9G CM2180
  • QSB5.9 30 CM550
  • QSB5.9 CM550
  • QSB5.9G
  • QSB5.9 CM850(CM2850)

• 6.7L Engines:

  • B6.7 CM2670 B153B
  • B6.7 CM2670 B164C
  • ISB/ISD6.7 CM2150 SN
  • ISB6.7 G CM2180 B118
  • QSB6.7 CM850(CM2850)
  • QSB6.7 M CM2250

• 7.0L Engines:

  • ISB3.9 CM2220 B107

• 8.3L Engines:

  • QSC8.3 CM850(CM2850)

• 8.9L Engines:

  • QSL8.9 CM2150 L141

• Others:

  • ISBE CM2150
  • ISBE4 CM850
  • QSB7 CM2880 B117

The Hexagon Flange Head Cap Screw 3919995 is used in these engines to secure various parts, ensuring that the engine operates smoothly and reliably. Its design allows for easy installation and removal, which is crucial during maintenance and repair operations.

Role of Part 3919995 Hexagon Flange Head Cap Screw in Engine Systems

This Cummins part is instrumental in securing various components within engine systems, ensuring stability and proper function.

Turbocharger Arrangement and Location

In turbocharger setups, this screw is often used to fasten the turbocharger to its mounting bracket. It ensures that the turbocharger remains securely in place, even under high-stress conditions. Additionally, it plays a role in attaching the turbocharger to the air intake manifold, maintaining the integrity of the air flow system.

Fuel System Components

Within the fuel system, the Hexagon Flange Head Cap Screw is utilized in several key areas. It secures the base fuel pump to its mounting location, ensuring that the pump remains stable during operation. Similarly, in Bosch injection pumps, this screw is employed to attach the pump to its housing, guaranteeing precise fuel delivery.

Air Intake and Crossover Connections

For air intake systems, the screw is used in the connection between the air intake manifold and the throttle control module. This ensures a tight seal, preventing air leaks that could affect engine performance. In air crossover systems, it secures the connection between the manifold and the air intake, maintaining efficient air distribution.

Fuel Control and Ignition Systems

In fuel control modules, the Hexagon Flange Head Cap Screw is used to mount the module to the engine, ensuring that it operates within the required parameters. For ignition systems, it secures components such as the ignition pump and fuel gauge, contributing to reliable ignition and fuel measurement.

Thermostat Housing and Oil Level Gauge

The screw also finds its application in thermostat housing, where it ensures the housing is tightly sealed, allowing for accurate temperature regulation. In oil level gauges, it secures the gauge to its location, providing consistent and reliable oil level readings.

Long Block and Filter Connections

In long block assemblies, the Hexagon Flange Head Cap Screw is used to attach various components, ensuring the structural integrity of the engine. It also plays a role in securing fuel and oil filters to their respective locations, maintaining the efficiency of the filtration process.

Conclusion

Overall, the Hexagon Flange Head Cap Screw 3919995 is a versatile fastener that contributes to the stability and functionality of numerous engine components. Its robust design, ease of installation, and resistance to loosening make it an essential part in the maintenance and operation of Cummins engines.