4927986
Socket Head Cap Screw
Cummins®

The 4927986 Socket Head Cap Screw is a specialized fastener produced by Cummins, a leading manufacturer in the commercial truck industry. This screw is designed for use in various applications within commercial trucks, contributing to the secure assembly of components and the overall reliability of the vehicle.

Basic Concepts of Socket Head Cap Screws

Socket Head Cap Screws are a type of fastener characterized by a cylindrical head with a hex socket that allows for easy tightening and loosening using a compatible tool. They are commonly used in mechanical assemblies where a strong, permanent fastening is required. The design of these screws provides a larger bearing surface compared to other screw types, which helps distribute the load more effectively and reduces the risk of damage to the fastened material ¹.

Purpose of the 4927986 Socket Head Cap Screw in Truck Operation

This Cummins part plays a role in the operation and maintenance of commercial trucks by securing various components within the truck’s structure or engine. It is often used in areas where high strength and durability are required, such as in the fastening of engine components, chassis parts, and other critical assemblies. Its design ensures a secure fit that can withstand the vibrations and stresses encountered during truck operation ².

Key Features

The 4927986 Socket Head Cap Screw is crafted from high-quality materials, typically a grade of steel that offers excellent strength and durability. It features a specific thread type that provides a strong grip, ensuring that components remain securely fastened. The head design includes a hex socket that allows for efficient tightening and loosening, reducing the risk of cam-out and providing a more controlled application of torque. Additionally, the screw may have unique attributes such as a corrosion-resistant coating, which enhances its functionality and durability in the demanding environments typical of commercial trucking ³.

Benefits

Using this part offers several advantages. Its design contributes to improved fastening strength, making it suitable for applications where a robust connection is necessary. The ease of installation, thanks to the hex socket, allows for quick and efficient assembly. Furthermore, the screw’s corrosion resistance ensures longevity, even in harsh operating conditions, reducing the need for frequent replacements and maintenance.

Installation and Usage Guidelines

Proper installation of the 4927986 Socket Head Cap Screw is vital to maximize its performance and ensure safety. It is recommended to use the appropriate tools, such as a hex key or socket wrench, to achieve the correct torque specifications. This ensures that the screw is tightened to the manufacturer’s recommended levels, providing a secure fastening without over-tightening, which could lead to damage.

Troubleshooting and Maintenance

Common issues with Socket Head Cap Screws include loosening over time due to vibrations or corrosion. Regular inspection and maintenance can help identify these issues early. If a screw appears loose or shows signs of corrosion, it should be tightened or replaced as necessary. Proper maintenance practices, such as keeping the screw and surrounding areas clean and free of debris, can prolong the life of the fastener.

Cummins: Manufacturer Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a strong reputation in the commercial truck industry, Cummins is known for producing high-quality components that meet the demanding requirements of heavy-duty applications. The company’s commitment to innovation, quality, and customer satisfaction has established it as a preferred manufacturer for critical truck components, including fasteners like the 4927986 Socket Head Cap Screw.

Compatibility with Cummins Engines

The Socket Head Cap Screw part number 4927986, manufactured by Cummins, is a versatile component that fits a variety of Cummins engines. This part is designed to secure various engine components, ensuring stability and integrity during operation.

QSK19 Series Engines

The QSK19 series engines include:

• QSK19 CM2350 K105
• QSK19 CM2350 K114
• QSK19 CM850 MCRS

These engines benefit from the Socket Head Cap Screw 4927986 in several ways. The screw’s design allows it to be used in applications where a flush, streamlined appearance is necessary, such as in the engine’s internal and external components. This part is particularly useful in areas where vibration resistance and durability are critical.

QSK38 Series Engines

The QSK38 series engines include:

• QSK38 CM2150 MCRS
• QSK38 CM850 MCRS

In these engines, the Socket Head Cap Screw 4927986 is employed to maintain the structural integrity of the engine’s components. Its robust construction ensures that it can withstand the high stresses and temperatures typical of these engines. This screw is ideal for securing parts that require precise alignment and minimal maintenance.

QSK50 and QSK60 Series Engines

The QSK50 and QSK60 series engines include:

• QSK50 CM2150 K107
• QSK50 CM2150 MCRS
• QSK60 CM850 MCRS

For these higher-capacity engines, the Socket Head Cap Screw 4927986 plays a role in maintaining the alignment and stability of larger and more complex components. The screw’s ability to provide a secure fit is essential in these engines, where even minor misalignments can lead to significant performance issues. Its use in these engines ensures that all parts remain tightly secured, contributing to the overall reliability and longevity of the engine.

Role of Part 4927986 Socket Head Cap Screw in Engine Systems

In the realm of engine systems, the part 4927986 Socket Head Cap Screw is instrumental in ensuring the secure assembly and operation of various components. Its applications span across several key elements, including the Electronic Fuel Control Kit, Fuel Injection Pump, and Fuel Pump.

Electronic Fuel Control Kit

Within the Electronic Fuel Control Kit, the Socket Head Cap Screw is utilized to fasten critical sensors and modules. These sensors, such as the Mass Air Flow (MAF) sensor and Oxygen (O2) sensor, require precise mounting to ensure accurate readings and optimal fuel delivery. The screw’s design allows for easy adjustment and removal, facilitating calibration and maintenance procedures.

Fuel Injection Pump

In the Fuel Injection Pump, the Socket Head Cap Screw plays a role in securing the pump housing and internal components. This ensures that the pump operates within specified tolerances, maintaining consistent fuel pressure and delivery. The screw’s hexagonal socket head allows for efficient tightening and loosening, reducing the risk of cross-threading and damage to the pump.

Fuel Pump

For the Fuel Pump, the Socket Head Cap Screw is essential in attaching the pump to the fuel tank and securing the electrical connections. This ensures a stable and reliable fuel supply to the engine. The screw’s corrosion-resistant properties are particularly beneficial in this application, as it prevents loosening due to vibrations and exposure to fuel.

General Pump Applications

Across various pump applications, the Socket Head Cap Screw is used to secure pump components, such as impellers and housings. This ensures that the pump operates efficiently and reliably, with minimal risk of leaks or component failure. The screw’s design allows for precise torque application, critical for maintaining pump performance and longevity.

Conclusion

In summary, the part 4927986 Socket Head Cap Screw is a versatile and reliable fastener in engine systems, contributing to the secure and efficient operation of fuel control kits, injection pumps, and fuel pumps. Its design and material properties make it well-suited for the demanding environments found in engine compartments.