4101451
Captive Washer Cap Screw
Cummins®

Introduction

The Captive Washer Cap Screw, specifically Part #4101451 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 component. This screw is integral to various truck assemblies, ensuring secure and reliable fastening solutions.

Basic Concepts and Functionality

A Captive Washer Cap Screw is a type of fastener that incorporates a washer directly into the screw design. This integration eliminates the need for separate washers, streamlining the assembly process and reducing the risk of washer loss during installation ¹. The screw operates by threading into a pre-tapped hole, where the captive washer distributes the clamping force evenly across the fastened materials. This design is particularly beneficial in mechanical assemblies where consistent pressure distribution and corrosion resistance are required ².

Role in Truck Operation

This Cummins part plays a significant role in the operation and maintenance of heavy-duty trucks. It is commonly used in engine components, chassis assemblies, and other critical areas where secure fastening is necessary. By providing a reliable connection, this screw helps maintain the structural integrity and performance of the truck’s various systems. Its application in these areas ensures that components remain securely fastened under the demanding conditions typical of heavy-duty truck operation ³.

Key Features

The 4101451 Captive Washer Cap Screw boasts several key features that enhance its performance and reliability. It is constructed from high-strength materials, ensuring durability under heavy loads. The screw features a specific thread type designed for optimal engagement with mating components, providing a secure fit. Additionally, the integrated washer is crafted to distribute clamping force evenly, reducing the risk of damage to fastened materials. These design elements contribute to the screw’s effectiveness in heavy-duty applications.

Benefits

Using the 4101451 Captive Washer Cap Screw offers several advantages in truck maintenance and assembly. The integrated washer improves sealing at the fastening point, reducing the likelihood of leaks and enhancing overall system integrity. The design also helps minimize vibration, which can lead to loosening over time. Furthermore, the screw’s robust construction and precise engineering contribute to enhanced durability, making it a reliable choice for heavy-duty truck applications.

Troubleshooting and Maintenance

Common issues associated with Captive Washer Cap Screws include loosening due to vibration and corrosion. To address these problems, regular inspection and maintenance are recommended. Ensuring proper torque application during installation is crucial to prevent loosening. Additionally, applying a corrosion-resistant coating can help protect the screw from environmental factors. Routine checks for signs of wear or damage will help maintain the screw’s performance and longevity.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions. With a rich history in the automotive and heavy-duty truck industry, Cummins is known for its commitment to quality and innovation. The company’s product range includes engines, filtration systems, and aftermarket parts, all designed to meet the demanding requirements of heavy-duty applications. Cummins’ reputation for excellence is built on its dedication to producing reliable and high-performance components, such as the 4101451 Captive Washer Cap Screw.

Captive Washer Cap Screw 4101451 in Cummins Engines

This Cummins part is a critical component in various Cummins engine models. This part is designed to secure and stabilize different engine parts, ensuring optimal performance and longevity of the engine.

ISM Series

• ISM CM570
• ISM CM570/870

This part is utilized in the ISM CM570 and ISM CM570/870 engines, where it plays a crucial role in maintaining the integrity of the engine’s structural components.

ISX Series

• ISX CM570
• ISX CM870
• ISX CM871
• ISX12 CM2350 X102
• ISX12 G CM2180 EJ
• ISX12/ISX11.9 CM2250
• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

In the ISX series, this part is integral to the ISX CM570, ISX CM870, ISX CM871, ISX12 CM2350 X102, ISX12 G CM2180 EJ, ISX12/ISX11.9 CM2250, ISX15 CM2250, ISX15 CM2250 SN, and ISX15 CM2350 X101 engines. This part ensures that the engine’s components remain firmly in place, contributing to the overall reliability and efficiency of these engines.

QSB Series

• QSB4.5 CM2250 EC

This part is also used in the QSB4.5 CM2250 EC engine, where it helps maintain the structural stability of the engine’s components.

QSK Series

• QSK95 CM2350 K111
• QSK95 CM2350 K113

In the QSK95 CM2350 K111 and QSK95 CM2350 K113 engines, this screw is essential for securing various parts, ensuring that the engine operates smoothly and efficiently.

QSX Series

• QSX11.9 CM2250 ECF
• QSX15 CM2250
• QSX15 CM2250 ECF
• QSX15 CM2350 X105

This part is used in the QSX11.9 CM2250 ECF, QSX15 CM2250, QSX15 CM2250 ECF, and QSX15 CM2350 X105 engines. This part ensures that the engine’s components are securely fastened, contributing to the engine’s performance and durability.

X15 Series

• X15 CM2350 X116B
• X15 CM2350 X123B
• X15 CM2450 X134B

This part is also utilized in the X15 CM2350 X116B, X15 CM2350 X123B, and X15 CM2450 X134B engines. This screw is crucial for maintaining the structural integrity of these engines, ensuring they operate efficiently and reliably.

Role of Part 4101451 Captive Washer Cap Screw in Engine Systems

The 4101451 Captive Washer Cap Screw is integral to the secure assembly and operation of various engine components. In the Air Compressor Kit, it ensures the Compressor Air Inlet is firmly attached, maintaining the integrity of the air supply system. This screw is also vital in the Air Intake Connection, where it secures the Air Intake to the Cylinder Block, ensuring a sealed and efficient airflow into the engine.

Within the Exhaust Recirculation Air system, the 4101451 screw plays a role in attaching components that manage the recirculation of exhaust gases, contributing to emission control. It is used in the Front Gear Cover arrangement to secure the cover to the engine, protecting internal components and maintaining alignment.

In the electrical systems, such as the Harness for Electronic Control Module Wiring, this screw is employed to mount and secure the Engine Control Module and Fuel Control Module, ensuring these sensitive components are protected and correctly positioned.

For the Alternator Mounting and Crankcase Breather Plumbing, the 4101451 screw provides the necessary fastening strength, ensuring these components are securely attached to the engine, which is essential for their function and the overall engine performance.

Overall, the 4101451 Captive Washer Cap Screw is a key component in maintaining the structural integrity and operational efficiency of various engine systems.

Conclusion

The 4101451 Captive Washer Cap Screw by Cummins is a critical component in heavy-duty truck and engine applications. Its design, featuring an integrated washer, ensures secure and reliable fastening, contributing to the structural integrity and performance of various truck and engine systems. Regular maintenance and proper installation practices are essential to maximize the benefits of this part, ensuring long-term reliability and efficiency in heavy-duty applications.