S285
Heavy Hexagon Jam Nut
Cummins®

The Cummins S285 Heavy Hexagon Jam Nut is a specialized fastening component designed for use in commercial trucks. It plays a significant role in securing various components within the truck’s structure, ensuring stability and reliability under demanding conditions. This part is particularly valued in the trucking industry for its robust design and performance capabilities.

Purpose and Function

The S285 serves to secure components in commercial truck applications by providing a reliable fastening solution. It operates within the fastening system to lock components in place, preventing loosening due to vibration or other dynamic forces. This nut is often paired with bolts to create a secure connection that can withstand the rigors of heavy-duty use.

Design and Construction

This Cummins part features a hexagonal shape, which allows for efficient torque application using standard tools. Its design includes a nylon insert that deforms under pressure to create a locking mechanism, enhancing the security of the fastening. The nut is typically made from high-strength steel, which provides durability and resistance to wear. The combination of its shape, material, and locking mechanism makes it well-suited for heavy-duty applications.

Key Features

Several key features contribute to the effectiveness of the Heavy Hexagon Jam Nut in truck applications. Its high strength ensures it can withstand significant loads without deformation. Corrosion resistance is another important feature, allowing it to perform reliably in various environmental conditions. Additionally, its compatibility with a wide range of fasteners makes it a versatile choice for different truck components.

Benefits

Using this part in commercial trucks offers several benefits. It provides improved fastening security, reducing the risk of component loosening during operation. Its durability under heavy loads ensures long-term reliability, while its resistance to vibration and loosening enhances overall truck performance. These attributes make it a preferred choice for critical fastening applications in the trucking industry.

Installation Guidelines

Proper installation of the S285 is crucial for optimal performance. It should be installed using the appropriate torque specifications to ensure the locking mechanism is activated correctly. Best practices include using the correct tools and following a step-by-step process to achieve a secure and lasting connection. Adhering to these guidelines helps maintain the integrity of the fastening system.

Maintenance and Inspection

Regular maintenance and inspection of the Heavy Hexagon Jam Nut are recommended to identify signs of wear, corrosion, or damage. Visual inspections and torque checks can help ensure the nut remains in good condition. If signs of deterioration are detected, replacement may be necessary to prevent failures and maintain the reliability of the fastening system.

Troubleshooting Common Issues

Common issues with the Heavy Hexagon Jam Nut may include loosening, corrosion, or damage. Troubleshooting these problems involves identifying the root cause and applying appropriate solutions. For example, re-torquing the nut may address loosening, while corrosion can be mitigated through cleaning and protective coatings. Addressing these issues promptly helps maintain the performance and safety of the truck.

Compatibility and Applications

The Heavy Hexagon Jam Nut is commonly used in various applications within commercial trucks, including securing engine components, chassis parts, and other critical assemblies. Its compatibility with a wide range of fasteners allows it to be used in different truck systems and configurations, making it a versatile component in the industry.

Cummins Overview

Cummins Inc. is a renowned manufacturer with a strong reputation in the automotive industry, particularly for commercial vehicles. The company is known for its commitment to producing high-quality components that enhance the performance and reliability of trucks. Cummins’ expertise and dedication to innovation ensure that their products, like the Heavy Hexagon Jam Nut, meet the demanding requirements of the trucking industry.

Cummins S285 Heavy Hexagon Jam Nut Compatibility

The Cummins S285 Heavy Hexagon Jam Nut is a critical component in various engine configurations, ensuring secure fastening and stability. This part is compatible with a range of Cummins engines, including:

K-Series Engines

• K19
• K38
• K50

These engines, part of the K-Series, benefit from the S285 jam nut in maintaining the integrity of their assemblies.

L10 Engines

• L10 CELECT
• L10 GAS
• L10 MECHANICAL

The L10 engines, available in CELECT, GAS, and MECHANICAL variants, integrate the S285 jam nut to secure various components.

N14 Engines

• N14 CELECT
• N14 CELECT PLUS
• N14 MECHANICAL

The N14 engines, with their CELECT, CELECT PLUS, and MECHANICAL configurations, utilize the S285 jam nut for reliable fastening.

NH/NT 855 Engine

• NH/NT 855

This engine incorporates the S285 jam nut to ensure the secure attachment of critical parts.

QSK38 and QSK50 Engines

• QSK38 CM2150 MCRS
• QSK50 CM2150 K107
• QSK50 CM2150 MCRS
• QSK50 CM2350 K108

These engines, part of the QSK series, use the S285 jam nut to maintain the stability and reliability of their assemblies.

QSNT14 and QST30 Engines

• QSNT14 CM876 N102
• QST30 CM552

The QSNT14 and QST30 engines integrate the S285 jam nut to secure various components, ensuring optimal performance.

VTA903 Engine

• VTA903 CM2250 V105

The VTA903 engine utilizes the S285 jam nut to maintain the integrity of its assemblies.

The Cummins S285 Heavy Hexagon Jam Nut is a versatile and essential component, compatible with a wide range of Cummins engines, ensuring secure fastening and reliable operation across different engine configurations.

Role of Part S285 Heavy Hexagon Jam Nut in Engine Systems

The S285 Heavy Hexagon Jam Nut is an essential component in securing various parts within engine systems, ensuring stability and reliability in operation. Its application spans across multiple components, each playing a distinct role in the overall functionality of the engine.

Air Compressor and Related Components

In the air compressor mounting brace and air compressor support, the S285 nut is utilized to fasten these components securely to the engine frame. This ensures that the air compressor operates efficiently without undue vibration or movement, which could lead to performance issues or damage over time.

Alternator and Generator Mounting

For the alternator mtg arrangement and mounting generator, the S285 nut is critical in maintaining the precise alignment and secure attachment of these components. Proper fastening ensures consistent electrical output and prevents electrical issues that could arise from a loose alternator.

Cooling System Components

In the cooling system, particularly at the connection, water outlet, and radiator, the S285 nut helps in securing hoses and pipes. This is vital for maintaining the integrity of the cooling system, ensuring that coolant flows smoothly without leaks, which is essential for temperature regulation within the engine.

Fan and Drive Components

The fan bracket support, fan drive, and fan hub rely on the S285 nut for secure attachment to the engine. This is important for the efficient operation of the cooling fan, which plays a key role in dissipating heat from the engine.

Fuel System

In the fuel system, specifically at the fuel filter and mounting bracket, the S285 nut ensures that the filter is securely mounted. This is important for maintaining the cleanliness of the fuel supply, which is crucial for engine performance and longevity.

Miscellaneous Applications

Other applications of the S285 nut include securing the corrosion resistor bracket, rocker arm housing, and various mounting points throughout the engine. Each of these applications requires a robust fastening solution to ensure the component remains in place under the stresses of engine operation.

Summary of Applications

• Air Compressor Mounting Brace and Air Compressor Support
• Alternator Mtg Arrange and Mounting Generator
• Connection, Water Outlet, and Radiator
• Fan Bracket Support, Fan Drive, and Fan Hub
• Fuel Filter and Mounting Bracket
• Corrosion Resistor Bracket and Rocker Arm Housing
• Various Mounting points throughout the engine

The S285 Heavy Hexagon Jam Nut’s role in these components underscores its importance in maintaining the structural integrity and operational efficiency of engine systems.

Conclusion

The Cummins S285 Heavy Hexagon Jam Nut is a critical component in the trucking industry, providing reliable fastening solutions for various engine and truck components. Its robust design, high strength, and corrosion resistance make it well-suited for heavy-duty applications. Proper installation, maintenance, and troubleshooting are essential to ensure the longevity and performance of this part in commercial trucks.