3286392
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, Part #3286392 by Cummins, is a specialized fastener designed for heavy-duty truck applications. Cummins, a renowned manufacturer in the automotive and heavy-duty truck industry, produces this screw to meet the demanding requirements of commercial vehicles. This part is integral to ensuring the secure assembly of various components within these trucks.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of bolt characterized by its hexagonal head and a flange—a flat, circular plate—attached to the underside of the head. This design allows for efficient tightening using a wrench or socket and provides additional surface area to distribute the load, reducing the risk of the screw head sinking into softer materials ¹. Within mechanical systems, these screws play a role in securing components that require a high degree of stability and resistance to vibration.

Purpose and Role in Truck Operation

The 3286392 Hexagon Flange Head Cap Screw serves a specific purpose in heavy-duty trucks by securing critical components that are subject to significant stress and vibration. It is commonly used in applications where the fastener needs to withstand high loads and maintain a secure connection over time. This screw is often found in engine assemblies, transmission systems, and other areas where durability and reliability are paramount ².

Key Features

The 3286392 Hexagon Flange Head Cap Screw features a hexagonal head that allows for easy and precise tightening using standard tools. The flange beneath the head provides additional surface area, which helps in distributing the load and preventing the screw from digging into the material it is securing. Additionally, the screw is made from high-strength materials, ensuring it can withstand the rigors of heavy-duty truck operations. The design also includes threading that engages deeply into the mating part, enhancing the overall stability of the connection.

Benefits

The 3286392 Hexagon Flange Head Cap Screw offers several advantages. Its hexagonal head design allows for efficient and consistent tightening, reducing the likelihood of over-tightening or stripping. The flange provides added stability, which is particularly beneficial in applications where vibrations are common. The high-strength material used in its construction ensures durability, even in harsh operating conditions. Additionally, the screw’s design helps resist loosening over time, maintaining a secure connection throughout the vehicle’s operational life ³.

Installation Considerations

Proper installation of the 3286392 Hexagon Flange Head Cap Screw is vital to ensure its effectiveness and longevity. It is important to follow torque specifications provided by the manufacturer to avoid over-tightening, which can lead to damage, or under-tightening, which can compromise the connection. Alignment is also critical; the screw should be installed perpendicular to the surface to ensure even load distribution. Using the correct tools and following a systematic approach to tightening will help achieve the desired results.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibration, corrosion, and damage from improper installation. Regular inspections can help identify these problems early. If a screw appears loose, it should be re-tightened to the specified torque. Corrosion can be addressed by cleaning the affected area and applying a suitable anti-corrosive treatment. Damaged screws should be replaced to maintain the integrity of the assembly. Routine maintenance, including checking for tightness and signs of wear, will help ensure the longevity and reliable performance of these screws.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. Founded in 1919, Cummins has a long-standing reputation for quality and innovation in the automotive and heavy-duty truck industry. The company offers a wide range of products designed to meet the needs of commercial vehicles, providing reliable and efficient solutions for various applications. Cummins’ commitment to excellence is reflected in its extensive product line and the trust it has earned from customers worldwide.

Hexagon Flange Head Cap Screw Part 3286392 in Cummins Engines

The Hexagon Flange Head Cap Screw part number 3286392, manufactured by Cummins, is a critical component in various 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 components are tightly secured, which is vital for maintaining engine integrity and performance.

Application in Cummins Engines

15N Series Engines:

• 15N CM2380 M104B
• 15N B6.7 CM2350 B135B

ISB Series Engines:

• ISB CM2150
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB5.9 CM2880 B110
• ISB6.7 CM2250
• ISB6.7 CM2350 B101
• ISB6.7 G CM2180 B118
• ISB9 CM2150 SN
• ISX12/ISX11.9 CM2250

ISBE Series Engines:

• ISBE CM2150
• ISBE4 CM850

ISF Series Engines:

• ISF2.8 CM2220 F117
• ISF2.8 CM2220 F129
• ISF3.8 CM2220 AN

QSF Series Engines:

• QSF2.8 CM2880 F104
• QSF2.8 CM2880 F105
• QSF2.8 CM2880 F108
• QSF2.8 CM2880 F114

QSK Series Engines:

• QSK50 CM2350 K108

QST and QSV Series Engines:

• QST30 CM552
• QSV91-G4 CM558/CM700 V102

R Series Engines:

• R2.8 CM2220 R101B

The Hexagon Flange Head Cap Screw part 3286392 is integral to the assembly and maintenance of these engines, ensuring that all components are fastened securely and reliably. Its use across a wide range of Cummins engine models underscores its versatility and importance in maintaining engine performance and longevity.

Role of Part 3286392 Hexagon Flange Head Cap Screw in Engine Systems

The part 3286392 Hexagon Flange Head Cap Screw is integral to the assembly and functionality of various engine components. Its robust design and secure fastening capabilities make it suitable for several applications within engine systems.

Alternator and Mounting Arrangements

In alternator systems, the Hexagon Flange Head Cap Screw is used to secure the alternator to its mounting bracket. This ensures that the alternator remains firmly in place, allowing it to generate electricity efficiently without vibrations that could lead to performance issues.

Turbocharger and Compressor Assemblies

Within turbocharger and compressor assemblies, this screw plays a role in attaching the compressor housing to the turbine housing. Proper fastening is essential to maintain the integrity of the turbocharger, ensuring optimal airflow and pressure management.

Refrigerant and Fuel Systems

In refrigerant and fuel systems, the screw is employed to secure plumbing components such as fittings and valves. This is vital for maintaining the seal integrity and preventing leaks, which are critical for the safe and efficient operation of these systems.

Exhaust Manifold and Muffler

The Hexagon Flange Head Cap Screw is also utilized in the exhaust system, particularly in attaching the exhaust manifold to the engine and securing the muffler to the exhaust pipe. This helps in reducing vibrations and ensuring that the exhaust gases are directed properly, contributing to the overall performance and emissions control of the engine.

Fan and Fan Drive Mechanisms

In fan and fan drive mechanisms, this screw is used to attach the fan to its support structure and to secure the fan drive components. This ensures that the fan operates smoothly, providing adequate cooling to the engine and other components.

Intercooler and Front Engine Support

Within intercooler systems, the screw is used to fasten the intercooler to its mounting brackets, ensuring it remains stable during operation. Similarly, in front engine support structures, it helps in securing the engine to the chassis, providing stability and reducing the risk of engine movement.

Hand Operating Winch and Lifting Fixtures

For hand operating winches and lifting fixtures, the Hexagon Flange Head Cap Screw is crucial in assembling these components, ensuring they can withstand the stresses and loads during operation. This is particularly important in maintenance and repair scenarios where secure and reliable fastening is paramount.

Flywheel and Transmission Mounting

In flywheel and transmission mounting applications, this screw is used to secure the flywheel to the engine and to attach the transmission to the engine block. This ensures that the power transfer from the engine to the transmission is smooth and efficient, contributing to the overall performance of the vehicle.

Engine Control Module and Railcar Installations

For engine control modules and railcar installations, the screw is used in various mounting and securing applications. This includes attaching the ECM to its housing and securing components during railcar installations, ensuring that all systems operate within specified parameters.

Conclusion

Overall, the part 3286392 Hexagon Flange Head Cap Screw is a versatile and reliable fastening solution across a wide range of engine system components, contributing to the stability, efficiency, and performance of the engine.