4006276
Twelve Point Cap Screw
Cummins®

The 4006276 Twelve Point Cap Screw is a specialized fastener produced by Cummins, a leading manufacturer in the commercial truck industry. This component is integral to various applications within commercial trucks, ensuring secure and reliable connections in critical systems.

Basic Concepts of Twelve Point Cap Screws

A Twelve Point Cap Screw is a type of fastener characterized by its hexagonal socket head, which allows for increased torque application compared to traditional hex-head bolts ¹. This design reduces the risk of cam-out, providing a more secure fastening solution. In the automotive industry, twelve point cap screws are commonly used in applications requiring high strength and resistance to loosening, such as in engine components, chassis assemblies, and other structural elements ².

Purpose and Role in Truck Operation

The 4006276 Twelve Point Cap Screw plays a significant role in the operation of commercial trucks by securing critical components and ensuring structural integrity. It is designed to withstand high loads and vibrations, which are common in heavy-duty truck applications ³. By providing a secure and stable connection, this fastener contributes to the overall functionality and safety of the vehicle, helping to maintain proper alignment and performance of connected parts.

Key Features

The 4006276 Twelve Point Cap Screw features a robust design with a twelve-sided socket head, allowing for enhanced torque application and reduced risk of stripping. It is typically made from high-strength materials, such as alloy steel, to ensure durability and resistance to wear ⁴. The screw’s unique design includes a chamfered underside to facilitate easy installation and a smooth finish to prevent galling and corrosion.

Benefits

Using the 4006276 Twelve Point Cap Screw in truck applications offers several benefits. Its design provides improved durability and resistance to loosening, even under high vibration conditions. The enhanced load distribution capabilities of this fastener help to ensure a secure and stable connection, reducing the risk of component failure. Additionally, the material composition and finish of the screw contribute to its corrosion resistance, prolonging its lifespan in demanding environments.

Installation Guidelines

Proper installation of the 4006276 Twelve Point Cap Screw is crucial for ensuring a secure and reliable connection. Follow these steps for optimal results:

1. Clean the installation surface to remove any debris or contaminants.
2. Apply a suitable thread lubricant to the screw threads to facilitate easy installation and prevent galling.
3. Use a torque wrench to install the screw, applying the specified torque value to ensure a secure fit without over-tightening.
4. Double-check the connection to confirm that the screw is properly seated and the specified torque has been achieved.

Troubleshooting and Maintenance

Common issues with the 4006276 Twelve Point Cap Screw may include corrosion or stripping. To address these problems, follow these troubleshooting steps:

1. Inspect the screw and surrounding components for signs of corrosion or damage.
2. If corrosion is present, clean the affected areas thoroughly and apply a corrosion-resistant coating to prevent further degradation.
3. If the screw has stripped, replace it with a new fastener of the same specifications to ensure a secure connection.

Regular maintenance, such as periodic inspection and re-torquing, can help prolong the lifespan of the 4006276 Twelve Point Cap Screw and ensure continued reliable performance.

Cummins: A Brief 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 offers a wide range of high-quality components designed to meet the demanding requirements of heavy-duty applications. The company’s commitment to innovation, quality, and customer satisfaction has established it as a trusted source for truck components, including the 4006276 Twelve Point Cap Screw.

Role of Part 4006276 Twelve Point Cap Screw in Engine Systems

In the intricate assembly of engine systems, the part 4006276 Twelve Point Cap Screw serves as a fundamental fastening element, ensuring the secure attachment of various components. Its application is particularly significant in the context of levers and rockers, where precision and reliability are paramount.

Levers

Levers within an engine system are pivotal for transmitting force and motion. The Twelve Point Cap Screw, with its enhanced grip and resistance to cam-out, provides a robust connection between the lever and its mounting points. This secure fastening is essential for maintaining the lever’s alignment and operational integrity, ensuring that force is transmitted efficiently without unintended movement or wear.

Rockers

Rockers, often utilized in valvetrain systems, require precise and consistent fastening to function correctly. The Twelve Point Cap Screw plays a key role in securing rockers to their respective shafts or pivot points. Its design allows for tighter torque specifications, which is vital for maintaining the rocker’s position and ensuring smooth, reliable valve operation. This, in turn, contributes to the overall efficiency and performance of the engine.

In both applications, the Twelve Point Cap Screw’s ability to provide a strong, stable connection underscores its importance in the reliable operation of engine components.

Conclusion

The 4006276 Twelve Point Cap Screw is a critical component in the assembly and operation of commercial trucks and engines. Its robust design, high-strength materials, and precise application ensure secure and reliable connections, contributing to the overall functionality and safety of the vehicle. Proper installation, maintenance, and troubleshooting are essential for maximizing the lifespan and performance of this fastener.