5364876
Twelve Point Nut
Cummins®

The 5364876 Twelve Point Nut, manufactured by Cummins, is a specialized fastener designed for use in commercial truck applications. This article provides an overview of the nut’s design, function, and significance in the operation of commercial trucks. It also covers key features, benefits, installation guidelines, troubleshooting tips, and maintenance practices to ensure optimal performance and longevity.

Basic Concepts of Twelve Point Nuts

A twelve point nut, also known as a 12-sided or dodecagonal nut, is a type of fastener characterized by its twelve-sided design. This design allows for a more even distribution of torque compared to traditional hexagonal nuts, reducing the risk of rounding off the corners during tightening ¹. Twelve point nuts are commonly used in applications where high torque and resistance to loosening are required. Compared to other types of nuts, such as hex nuts or flange nuts, twelve point nuts offer enhanced performance in demanding environments.

Purpose and Role in Truck Operation

This Cummins part plays a significant role in the operation of commercial trucks by providing secure fastening in various components. It is commonly used in applications where high torque and resistance to loosening are critical, such as in engine components, transmission systems, and chassis assemblies. The nut’s design ensures a tight and reliable connection, contributing to the overall safety and performance of the truck.

Key Features

The 5364876 Twelve Point Nut is designed with several key features that enhance its performance. Its twelve-sided design allows for more even torque distribution, reducing the risk of damage during installation. The nut is typically made from high-strength materials, such as alloy steel, to ensure durability in heavy-duty applications. Additionally, the nut may feature a corrosion-resistant coating to protect against environmental factors, extending its service life ².

Benefits

This part offers several benefits in commercial truck applications. Its design allows for improved torque application, ensuring a secure and reliable connection. The nut’s resistance to loosening helps maintain the integrity of critical components, reducing the risk of failure. Additionally, the high-strength material and corrosion-resistant coating contribute to the nut’s durability, making it suitable for use in demanding environments.

Installation Guidelines

Proper installation of the 5364876 Twelve Point Nut is crucial to ensure a secure and reliable connection. Follow these guidelines for optimal results:

1. Clean the Fastening Area: Ensure the mating surfaces are clean and free of debris to promote a strong bond.
2. Use the Correct Tool: Employ a twelve point socket or wrench to avoid damaging the nut during installation.
3. Apply Torque Gradually: Tighten the nut in increments, using a torque wrench to achieve the specified torque value.
4. Check for Proper Seating: Ensure the nut is fully seated against the component to prevent loosening over time.
5. Inspect for Damage: After installation, inspect the nut and surrounding area for any signs of damage or misalignment.

Troubleshooting and Maintenance

Common issues with the 5364876 Twelve Point Nut may include loosening, corrosion, or damage during installation. To troubleshoot and maintain the nut:

1. Inspect Regularly: Check the nut for signs of corrosion, damage, or loosening during routine maintenance.
2. Re-tighten if Necessary: If the nut shows signs of loosening, re-tighten it to the specified torque value.
3. Replace Damaged Nuts: If the nut is damaged or shows significant corrosion, replace it with a new one to ensure continued performance.
4. Apply Protective Coatings: Consider applying a corrosion-resistant coating to extend the nut’s service life in harsh environments.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history dating back to 1919, Cummins has established a strong reputation in the commercial truck industry for producing high-quality, reliable components. The company’s extensive product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding needs of commercial truck applications.

Twelve Point Nut 5364876 Compatibility with Cummins Engines

The Twelve Point Nut part number 5364876, manufactured by Cummins, is a versatile component designed to fit a variety of Cummins engines. This part is engineered to ensure secure fastening and reliable performance across different engine models.

ISC CM850

The ISC CM850 engine benefits from the use of the Twelve Point Nut 5364876. This engine, known for its robust performance and efficiency, utilizes this nut in various applications to maintain structural integrity and operational reliability.

ISF2.8 CM2220 F129 and ISL9 CM2150 SN

Both the ISF2.8 CM2220 F129 and ISL9 CM2150 SN engines are compatible with the Twelve Point Nut 5364876. These engines, part of Cummins’ lineup of high-performance diesel engines, incorporate this nut in critical areas to ensure secure connections and reduce the risk of loosening under operational stress.

L9 CM2670 L128B

The L9 CM2670 L128B engine also integrates the Twelve Point Nut 5364876. This engine, designed for heavy-duty applications, relies on this nut to maintain the stability and reliability of its components, ensuring optimal performance in demanding environments.

Role of Part 5364876 Twelve Point Nut in Engine Systems

The part 5364876 Twelve Point Nut is integral to the assembly and operation of several key components within engine systems.

In the fan drive system, this nut is employed to secure the fan drive mechanism to the engine block or other mounting surfaces. Its twelve-point design ensures a firm and reliable connection, which is essential for the efficient transfer of rotational force from the engine to the fan. This secure attachment helps maintain the alignment and balance of the fan drive, contributing to the overall stability and performance of the cooling system.

Within the fan hub assembly, the part 5364876 nut plays a role in attaching the fan blades to the hub. This connection is vital for the proper functioning of the fan, as it ensures that the blades are held in place and can rotate smoothly. The twelve-point configuration of the nut allows for precise tightening, which is important for preventing vibrations and ensuring that the fan operates efficiently.

In the fan support structure, the nut is used to fasten the support brackets or arms that hold the fan in position. This is important for maintaining the correct orientation and spacing of the fan relative to the engine and other components. A secure attachment provided by the twelve-point nut helps prevent movement or misalignment, which could otherwise lead to reduced cooling efficiency or damage to the fan and surrounding parts.

Lastly, in the front engine support system, the part 5364876 nut is utilized to connect various support components to the engine frame or chassis. This includes securing mounts, brackets, and other structural elements that help stabilize the engine within the vehicle. The robust design of the twelve-point nut ensures that these connections remain intact under the stresses and vibrations encountered during engine operation, contributing to the overall durability and reliability of the engine support system.

Conclusion

The 5364876 Twelve Point Nut is a critical component in the operation and maintenance of commercial trucks, particularly those equipped with Cummins engines. Its unique design, high-strength material, and corrosion-resistant properties make it an ideal choice for applications requiring secure fastening and resistance to loosening. Proper installation, regular maintenance, and timely replacement of damaged nuts are essential practices to ensure the continued performance and safety of commercial truck operations.