4947861
Plain Adapter
Cummins®

The Hexagon Flange Nut, identified by part number 4947861, is a component manufactured by Cummins, a prominent name in the commercial truck industry. This nut is integral to the fastening systems used in heavy-duty trucks, ensuring secure attachment of various components. Its design and functionality are tailored to meet the demanding requirements of commercial vehicle operations ¹.

Basic Concepts of Hexagon Flange Nuts

A Hexagon Flange Nut is characterized by its hexagonal shape and a flanged base. This design allows for efficient tightening and loosening using standard tools, such as wrenches or sockets. In the automotive industry, flange nuts are commonly used for their ability to distribute loads more evenly across the surface they are attached to, reducing the risk of damage to the fastened material ².

Purpose and Role in Truck Operation

This part serves a specific purpose in commercial trucks by providing a secure attachment point for components. It plays a role in maintaining the structural integrity of the truck by ensuring that parts remain firmly in place under various operating conditions. This nut is particularly important in applications where vibrations and dynamic loads are common, as it helps to prevent loosening over time ³.

Key Features

The 4947861 features a hexagonal shape that allows for straightforward installation and removal. Its flange design provides a larger bearing surface, which enhances load distribution. The nut is made from materials that offer durability and resistance to corrosion, ensuring long-term performance in harsh environments. Additionally, it may have unique attributes such as a special coating or thread design that further enhance its performance and longevity.

Benefits

Using this Cummins part offers several advantages. Its design contributes to improved load distribution, which can help prevent damage to the components it secures. The nut’s resistance to loosening ensures that connections remain tight, even under dynamic conditions. Furthermore, its ease of installation and removal simplifies maintenance procedures, reducing downtime for commercial trucks.

Installation and Usage

Proper installation of the 4947861 involves adhering to specific torque specifications to ensure secure fastening without over-tightening, which could lead to damage. Best practices include using the correct tools and following a systematic approach to tightening to achieve uniform load distribution across the flange.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Nuts, such as loosening or corrosion, can often be addressed through regular inspection and maintenance. Ensuring that nuts are properly torqued during installation and periodically checking for signs of wear or corrosion can help prolong their lifespan and maintain performance. In cases where corrosion is present, cleaning and reapplying a protective coating may be necessary.

Cummins: Manufacturer Overview

Cummins Inc. is a well-established manufacturer in the commercial truck industry, known for its wide range of products and commitment to quality and innovation. The company’s history of producing reliable automotive components underscores its reputation for excellence. Cummins’ dedication to advancing technology and meeting the needs of its customers is evident in its product offerings, including the 4947861.

Applications and Usage Scenarios

The 4947861 is typically used in commercial trucks for applications that require secure and durable fastening solutions. It is commonly found in systems where components are subjected to significant stress or vibration, such as in the attachment of body panels, engine components, or chassis parts.

Comparative Analysis

When compared to other types of nuts used in the industry, the 4947861 stands out for its flange design, which offers improved load distribution and resistance to loosening. While standard hex nuts are widely used, the addition of a flange provides distinct advantages in certain applications, making the 4947861 a preferred choice for specific fastening needs in commercial trucks.

Compatibility with Cummins Engines

This part is designed to fit a variety of Cummins engines. Below is a detailed description of the engines with which this flange nut is compatible.

ISB Series

• ISB CM2150
• ISB/ISD6.7 CM2150 SN
• ISB6.7 CM2250

ISBE Series

• ISBE CM2150
• ISBE4 CM850

ISG Series

• ISG11 CM2880 G108
• ISG12 CM2880 G107

QSB Series

• QSB4.5 CM850 (CM2850)
• QSB6.7 CM2250
• QSB6.7 CM850 (CM2850)
• QSB6.7 M CM2250
• QSB7 CM2880 B117

QSG Series

• QSG12 CM2880 G112
• QSG12/X12 CM2350 G110

X Series

• X11 CM2670 X126B
• X12 CM2670 X121B
• X13 CM2670 X122B
• Z14 CM2670 Z103B

Role of Part 4947861 in Engine Systems

The 4947861 is integral in securing and maintaining the integrity of various engine components.

• Engine Coolant Vent System: Ensures tight and secure connections, preventing coolant leaks and ensuring efficient cooling.
• Fuel Injection Pump: Secures the pump to its mounting points, ensuring stability during operation for consistent fuel delivery.
• Fuel Plumbing: Fastens fittings and connectors, maintaining the integrity of the fuel system and preventing leaks.
• Fuel Pump: Secures the pump to its housing or mounting bracket, ensuring efficient operation and reliable fuel delivery.
• Service Kit: May be included to replace worn or damaged nuts during maintenance procedures.
• Turbocharger Plumbing: Secures turbocharger components and plumbing connections, ensuring efficient operation without leaks.

Conclusion

The 4947861 Hexagon Flange Nut is a critical component in the maintenance and operation of Cummins engines and commercial trucks. Its design, featuring a hexagonal shape and flanged base, offers advantages in load distribution and resistance to loosening. Compatibility with a wide range of Cummins engines underscores its versatility and importance in ensuring secure and durable fastening solutions across various applications.