4983283
Flat Head Cap Screw
Cummins®

The 4983283 Flat 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, where it plays a role in securing components and ensuring the structural integrity of the vehicle.

Basic Concepts of Flat Head Cap Screws

Flat head cap screws are a type of fastener characterized by a flat top surface and a countersunk head, which allows the screw to sit flush with or below the surface of the material being fastened. These screws are commonly used in mechanical assemblies to secure components together. They function by threading into a pre-drilled hole, creating a strong and secure connection that can withstand significant stress and vibration ¹.

Purpose of the 4983283 Flat Head Cap Screw in Truck Operations

This Cummins part is utilized in various components of commercial trucks. It plays a role in securing parts that are subject to high stress and vibration, such as engine components, transmission parts, and chassis assemblies. By providing a reliable fastening solution, this screw contributes to the overall durability and performance of the truck.

Key Features

The 4983283 is engineered with several key features that enhance its performance in heavy-duty applications. It is made from high-strength materials, ensuring durability and resistance to wear. The screw features a specific thread type that provides a strong grip and secure connection. Its design includes a countersunk head, allowing it to sit flush with the surface of the material, which is particularly useful in applications where a smooth surface is required.

Benefits

Using this Cummins part offers several benefits. It provides improved fastening security, ensuring that components remain firmly in place even under significant stress and vibration. The screw’s design and material composition contribute to its resistance to corrosion and wear, enhancing its longevity in harsh operating conditions. Additionally, the countersunk head allows for a clean, professional finish, reducing the risk of damage to connected parts.

Installation Guidelines

Proper installation of the 4983283 is crucial for ensuring optimal performance and longevity. Begin by selecting the appropriate size and type of screw for the application. Use a drill to create a pilot hole that matches the diameter of the screw’s threads. Insert the screw into the hole and use a torque wrench to tighten it to the manufacturer’s specified torque settings. Avoid over-tightening, as this can damage the screw or the material being fastened ².

Troubleshooting and Maintenance

Common issues with flat head cap screws include loosening due to vibration, corrosion, and wear. To identify problems, regularly inspect screws for signs of loosening, rust, or damage. Maintenance practices include tightening screws to the proper torque settings, applying anti-seize compound to prevent corrosion, and replacing screws that show signs of wear or damage. These practices help prolong the life of the screw and ensure continued reliable performance.

Cummins: Manufacturer Overview

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

Cummins Flat Head Cap Screw 4983283 Compatibility

The Cummins Flat Head Cap Screw part number 4983283 is a versatile component designed to fit a variety of Cummins engines. This screw is integral in securing various parts within the engine assembly, ensuring structural integrity and proper function. Below is a detailed breakdown of the engines with which this part is compatible:

B4.5 Series

• B4.5 CM2350 B129B
• ISB4.5 CM2350 B104

D4.0 Series

• D4.0 CM2620 D103B

F2.8 Series

• F2.8 CM2620 F135B

F3.8 Series

• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102
• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109
• QSF3.8 CM2350 F107

F4.5 Series

• F4.5 CM2620 F139B
• F4.5 CM2620 F141C

G11 Series

• ISG11 CM2880 G108

G12 Series

• ISG12 CM2880 G107
• ISG12 G CMOH6.0 G111
• QSG12 CM2880 G112
• QSG12/X12 CM2350 G110

X11 Series

• X11 CM2670 X126B

X12 Series

• X12 CM2350 X119B
• X12 CM2670 X121B

X12N Series

• X12N CMMDG1 X143B

This flat head cap screw is engineered to meet the stringent requirements of Cummins engines, ensuring durability and reliability in demanding conditions. Its compatibility across various engine series underscores its importance in maintaining the structural and operational integrity of these engines.

Role of Part 4983283 Flat Head Cap Screw in Engine Systems

In the intricate assembly of engine systems, the part 4983283 Flat Head Cap Screw serves as a fundamental fastening component, ensuring the secure attachment of various critical components.

Block Assembly

Within the engine block, this screw is utilized to fasten components such as the cylinder heads, ensuring a tight seal that prevents any leakage of combustion gases. Its application here is vital for maintaining the structural integrity and operational efficiency of the engine block.

Compressor Integration

In compressor systems, the Flat Head Cap Screw is employed to secure the compressor housing to its mounting bracket. This secure attachment is essential for the compressor’s stable operation, allowing it to efficiently compress air without undue vibration or movement.

Air System Connections

For air systems, particularly those involving air intake and exhaust manifolds, the screw plays a role in securing these components to the engine block or cylinder head. This ensures a leak-free connection, which is important for optimal airflow and engine performance.

Engine Crankshaft Support

The screw is also used in the assembly of the engine crankshaft, where it secures various components such as the crankshaft pulley or the flywheel. This secure attachment is important for the smooth operation of the crankshaft, reducing the risk of misalignment or failure under the engine’s operational stresses.

Lubricating Oil Pump Assembly

In the lubricating oil pump system, the Flat Head Cap Screw is utilized to fasten the pump housing to the engine block. This secure attachment ensures the pump operates efficiently, providing consistent oil pressure and lubrication to the engine’s moving parts.

General Pump Applications

Across various pump applications within the engine system, including fuel and water pumps, the screw is used to secure pump components, ensuring they remain firmly in place during operation. This is important for the pumps’ efficiency and longevity, as well as for the overall reliability of the engine system.

Lubricating Oil System

Finally, in the lubricating oil system, the screw is used to secure oil galleries and passages to the engine block. This ensures a secure and leak-free pathway for oil circulation, which is important for maintaining proper lubrication and cooling of engine components.

Conclusion

The 4983283 Flat Head Cap Screw is a critical component in the assembly and maintenance of Cummins engines, ensuring the secure attachment of various critical components across different engine systems. Its design, material composition, and application in high-stress environments underscore its importance in maintaining the structural and operational integrity of these engines. Proper installation, maintenance, and understanding of its role in engine systems are essential for ensuring the longevity and reliability of the engine.