4916801
Hexagon Flange Head Cap Screw
Cummins®

Introduction

The Hexagon Flange Head Cap Screw, specifically Part #4916801 by Cummins, is a vital component in the maintenance and operation of commercial trucks. Cummins, a well-established manufacturer in the industry, produces this screw to meet the demanding requirements of heavy-duty applications. This screw is designed to provide reliable fastening solutions, ensuring the structural integrity and efficiency of various truck systems ¹.

Basic Concepts

Hexagon Flange Head Cap Screws are characterized by their hexagonal head, which allows for secure tightening using a wrench or socket, and a flange that distributes load and prevents the screw from sinking into the material. These screws are typically made from materials such as alloy steel or stainless steel, chosen for their strength, durability, and resistance to corrosion. In the automotive industry, they are commonly used to fasten components that require high tensile strength and resistance to vibration ².

Functionality and Operation

Within the context of a commercial truck, the Hexagon Flange Head Cap Screw operates by securely fastening components together. Its design ensures that the connected parts remain firmly in place, even under significant stress and vibration. This is particularly important in trucks, where components are subject to harsh operating conditions and dynamic loads. The screw’s role in securing components contributes to the overall structural integrity of the truck ³.

Purpose and Role in Truck Operation

This Cummins part plays a specific role in the operation of a truck by fastening critical components in various systems and assemblies. It is used in applications where high strength and durability are required, such as in the engine, transmission, and chassis. By providing a secure and stable connection, this screw helps maintain the efficiency and safety of the truck’s operation.

Key Features

This part features a hexagonal head that allows for easy and precise tightening with a wrench or socket. The flange at the base of the head distributes the load across a larger area, preventing the screw from sinking into the material and providing additional stability. As a cap screw, it is designed to be fully threaded, allowing it to engage with the entire length of the nut or tapped hole it is paired with.

Benefits

The 4916801 offers several benefits, including enhanced fastening security due to its hexagonal head and flange design. It provides resistance to loosening, even under vibration, ensuring that components remain securely fastened over time. Additionally, its design allows for ease of installation and removal, making maintenance procedures more efficient.

Installation Guidelines

To install the 4916801, begin by ensuring the mating surfaces are clean and free of debris. Use a wrench or socket to tighten the screw to the specified torque, which can be found in the manufacturer’s guidelines. It is recommended to use a torque wrench to achieve the precise torque setting, ensuring the screw is neither overtightened nor undertightened.

Maintenance Tips

To maintain the 4916801 and ensure optimal performance and longevity, regular inspection and tightening are recommended. Check for signs of loosening, corrosion, or damage during routine maintenance checks. If any issues are detected, address them promptly to prevent further complications. Additionally, ensure that the screw is tightened to the correct torque specification during maintenance procedures.

Troubleshooting Common Issues

Common issues associated with the 4916801 include loosening, corrosion, and damage. To resolve loosening, retighten the screw to the specified torque. If corrosion is present, clean the affected area and apply a corrosion-resistant coating or lubricant. In the case of damage, assess the severity and replace the screw if necessary to maintain the integrity of the fastening.

Cummins Overview

Cummins is a renowned manufacturer with a rich history in the commercial truck industry. The company offers a wide range of products, including engines, transmissions, and aftermarket parts, known for their quality, performance, and reliability. Cummins has established a strong reputation for innovation and excellence, making it a trusted choice for commercial truck operators and maintenance professionals.

Application in Cummins Engines

QSB5.9 CM850

The QSB5.9 CM850 engine utilizes the 4916801 in several key areas where secure fastening is essential. This includes attaching components that are subject to high stress and vibration, ensuring that the engine’s internal parts remain properly aligned and secured.

QSK19 CM2350 K105, QSK19 CM2350 K114, and QSK19 CM2350 K144G

These variants of the QSK19 CM2350 engine also incorporate the 4916801 in their design. The screw is used in multiple locations within the engine, particularly in areas that require robust fastening solutions to withstand the demanding conditions of heavy-duty operations. This includes securing engine covers, brackets, and other critical components that must maintain their position under significant load and operational stress.

QSK19 CM850 MCRS

In the QSK19 CM850 MCRS engine, the 4916801 is employed in similar critical applications. Its use in this engine variant ensures that all fastened components are held securely, contributing to the overall reliability and performance of the engine.

The consistent use of the 4916801 across these engine models highlights its importance in maintaining the structural integrity and operational efficiency of Cummins engines. This part’s design and material properties make it well-suited for the demanding environments in which these engines operate.

Role of Part 4916801 Hexagon Flange Head Cap Screw in Engine Systems

The 4916801 is integral in securing and maintaining the integrity of various engine components. Its application ensures that parts remain firmly in place, contributing to the overall efficiency and reliability of the engine system.

Auxiliary Pump

In the auxiliary pump system, the 4916801 is used to fasten the pump housing to the engine block. This secure attachment is vital for maintaining the alignment and operational stability of the pump. Proper fastening ensures that the pump can deliver consistent fluid pressure, which is essential for the lubrication and cooling systems within the engine.

Cylinder Block

Within the cylinder block, the 4916801 plays a role in attaching various components such as sensors, brackets, and mounting plates. These attachments are necessary for the accurate monitoring of engine parameters and the secure placement of additional engine parts. The screw’s design allows for a robust connection that can withstand the high temperatures and vibrations typical in engine operation.

Engine Crankshaft

The crankshaft, a pivotal component in converting linear piston motion into rotational force, relies on the 4916801 for securing crankshaft pulleys and other accessories. This ensures that all connected parts operate in unison, maintaining the crankshaft’s balance and reducing the likelihood of mechanical failure.

Hydraulic Pump

In hydraulic pump applications, the 4916801 is employed to fasten the pump casing and ensure that all internal components are held in precise alignment. This is particularly important in high-pressure hydraulic systems where even minor misalignments can lead to significant performance issues or leaks. The screw’s flange head provides additional surface area for a secure fit, enhancing the pump’s durability and operational efficiency.

Conclusion

The 4916801 Hexagon Flange Head Cap Screw by Cummins is a critical component in the maintenance and operation of commercial trucks and Cummins engines. Its design, material properties, and application across various engine systems highlight its importance in ensuring the structural integrity, efficiency, and reliability of these heavy-duty machines. Regular maintenance and proper installation are essential to maximize the performance and longevity of this crucial fastening solution.