3011713
Captive Washer Cap Screw
Cummins®

The Captive Washer Cap Screw is a component used in various fastening applications, particularly in the maintenance and assembly of commercial trucks. This screw is designed to simplify the fastening process by integrating a washer into the screw assembly, which helps distribute load and prevent damage to the fastened material. Cummins Inc., a well-established manufacturer in the commercial vehicle industry, produces the 3011713 Captive Washer Cap Screw. This part is recognized for its reliability and performance in heavy-duty applications ¹.

Basic Concepts of Captive Washer Cap Screw

A Captive Washer Cap Screw consists of a screw with an integrated washer that is held in place by a small collar or step in the screw’s shaft. This design ensures that the washer remains attached to the screw, eliminating the need for separate washer handling during installation. The washer plays a role in distributing the load exerted by the screw, which helps protect the surface of the material being fastened and enhances the overall stability of the joint ².

Purpose of the 3011713 Captive Washer Cap Screw in Truck Operation

The 3011713 Captive Washer Cap Screw is utilized in the assembly and maintenance of commercial trucks. It is applied in various truck components where secure and reliable fastening is required. This screw is particularly useful in applications where access is limited, or where the loss of a washer could lead to fastening failure. Its design allows for efficient and consistent fastening, which is vital for the integrity and safety of truck operations.

Key Features of the 3011713 Captive Washer Cap Screw

The 3011713 Captive Washer Cap Screw is engineered with specific design elements and material properties to meet the demands of heavy-duty applications. It is constructed from high-strength materials to withstand significant loads and environmental stresses. The integrated washer is designed to provide optimal load distribution, while the screw’s threading ensures a secure fit. These features contribute to the screw’s suitability for use in commercial trucks, where durability and reliability are paramount.

Benefits of Using the 3011713 Captive Washer Cap Screw

The 3011713 Captive Washer Cap Screw offers several advantages in fastening applications. Its integrated washer design simplifies the installation process by reducing the number of components required. This screw also provides improved reliability, as the washer is less likely to be misplaced or lost during installation. Additionally, the design helps resist vibration loosening, which is a common issue in dynamic environments like those found in commercial trucks.

Installation Guidelines

To ensure optimal performance and longevity, the 3011713 Captive Washer Cap Screw should be installed following specific guidelines. Begin by selecting the appropriate drill bit size for the pilot hole, which should be slightly smaller than the screw’s diameter to ensure a snug fit. Use a torque wrench to tighten the screw to the manufacturer’s specified torque settings to avoid over-tightening, which could strip the threads or damage the fastened material. Always ensure that the screw is perpendicular to the surface to achieve the best fastening results.

Troubleshooting Common Issues

Common issues with Captive Washer Cap Screws may include difficulty in installation, loosening over time, or damage to the screw or washer. To address these problems, verify that the pilot hole is the correct size and that the screw is being installed perpendicular to the surface. If loosening occurs, check for proper torque application and consider using a thread-locking compound to enhance stability. Inspect the screw and washer for signs of wear or damage, and replace if necessary to maintain fastening integrity.

Maintenance Tips

Regular inspection and maintenance of the 3011713 Captive Washer Cap Screw are recommended to prolong its service life and ensure continued functionality. Check for signs of corrosion, wear, or damage to the screw and washer. Ensure that the fastening remains secure and that there are no signs of loosening. Applying a protective coating can help prevent corrosion, especially in harsh environments. Following these maintenance practices will help maintain the performance and reliability of the fastening system.

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 vehicle industry for producing high-quality, reliable components. The company’s product range includes engines, powertrain components, and aftermarket parts, all designed to meet the rigorous demands of commercial and industrial applications. Cummins’ commitment to innovation and customer satisfaction has made it a trusted name in the industry.

Captive Washer Cap Screw 3011713 in Cummins Engines

The Captive Washer Cap Screw 3011713, manufactured by Cummins, is a critical component in various Cummins engine models. This part is integral to the assembly and operation of these engines, ensuring secure fastening and stability.

G855 Series

In the G855 series, the 3011713 screw is utilized in both the G855 and G855 CM558 variants. It plays a vital role in maintaining the structural integrity of the engine by securing various components, ensuring that they remain firmly in place during operation.

GTA855 Series

For the GTA855 CM558 (CM2358) G101 engine, the 3011713 screw is essential in fastening parts that require high precision and reliability. This engine, known for its robust performance, relies on this screw to maintain alignment and secure connections.

N14 Series

In the N14 series, the 3011713 screw is used across multiple models, including N14 CELECT, N14 CELECT PLUS, N14 G, and N14 MECHANICAL. Each of these engines benefits from the screw’s ability to provide a tight and reliable connection, crucial for the engine’s overall performance and longevity.

NH/NT 855 Series

The NH/NT 855 engine also incorporates the 3011713 screw. This part ensures that the engine’s components are securely fastened, contributing to the engine’s durability and efficiency.

QSN14 Series

In the QSN14 CM876 N103 and QSNT14 CM876 N102 engines, the 3011713 screw is used to maintain the integrity of the engine’s assembly. Its role in these models is to provide a dependable fastening solution, ensuring that all parts remain securely in position under various operating conditions.

Each of these engines, while differing in specific configurations and applications, relies on the 3011713 screw to maintain critical connections and ensure operational reliability.

Role of Part 3011713 Captive Washer Cap Screw in Engine Systems

The Part 3011713 Captive Washer Cap Screw is integral to the secure assembly and operation of various engine components. It ensures that parts remain firmly attached, contributing to the overall stability and efficiency of the engine system.

Accessory Mounting and Accessory Plates

In the context of accessory mounting, the Part 3011713 is used to attach accessory plates to the engine. These plates serve as mounting points for various accessories such as alternators, water pumps, and other peripheral devices. The secure attachment provided by this screw ensures that these accessories remain in place under operational stress, thereby maintaining their functionality and alignment.

Base Engine Mounting and EBM Cover

For the base engine mounting, this screw plays a significant role in attaching the Engine Block Mounting (EBM) cover to the engine. The EBM cover protects critical engine components and provides a structural framework for other parts. The secure fit provided by the captive washer cap screw ensures that the EBM cover remains intact, safeguarding the engine internals from external contaminants and mechanical stress.

Front Gear and Gear Cover Assemblies

In front gear and gear cover assemblies, the Part 3011713 is employed to fasten the gear cover to the front gear. This is essential for maintaining the precise alignment of gears, which is vital for the smooth operation of the engine. The screw’s design ensures that the gear cover stays securely in place, preventing any misalignment that could lead to increased wear or failure of the gear system.

Engine Control Module and Engine Mounts

The Engine Control Module (ECM) relies on secure mounting to function correctly. The Part 3011713 is used to attach the ECM to its designated location, ensuring that it remains stable and unaffected by vibrations. Similarly, for engine mounts and engine mounting systems, this screw provides the necessary tension and security to keep the engine firmly in place within the vehicle’s chassis. This is particularly important for maintaining engine alignment and reducing stress on other components.

Fan Bracket and Front Engine Support

In the fan bracket assembly, the Part 3011713 ensures that the fan remains securely attached to the engine, allowing for efficient cooling. For the front engine support, this screw helps in maintaining the structural integrity of the engine’s front section, which is subjected to significant forces during operation.

Gear Cover Mounting and Mounting Gear Cover

Lastly, in gear cover mounting and mounting gear cover applications, the Part 3011713 ensures that the gear covers are tightly secured. This is essential for preventing oil leaks and maintaining the cleanliness of the engine environment. The screw’s captive washer design also aids in simplifying the assembly process, reducing the likelihood of losing washers during maintenance.

Conclusion

Overall, the Part 3011713 Captive Washer Cap Screw is a versatile fastener that enhances the reliability and performance of various engine components through secure and stable attachments. Its integration into Cummins engines underscores its importance in maintaining the structural integrity and operational efficiency of these engines.