3968470
Twelve Point Cap Screw
Cummins®

The Twelve Point Cap Screw, identified by Part #3968470, is a component manufactured by Cummins, a well-established name in the commercial truck industry. This screw is significant in the maintenance and operation of commercial trucks, providing a reliable fastening solution that ensures the integrity and performance of various truck components.

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 torque application using a hex key. This design differentiates it from other fasteners, such as hex cap screws, which require a wrench for installation and removal. In the automotive industry, twelve point cap screws are commonly used for their ease of installation in tight spaces and their ability to resist cam-out, which is the tendency of a hex driver to slip out of the fastener head during torque application ¹.

Role of the 3968470 Twelve Point Cap Screw in Truck Operation

The 3968470 Twelve Point Cap Screw plays a role in the operation and maintenance of commercial trucks by securing various components. It is utilized in engine assemblies, chassis construction, and other areas where a secure and durable fastening solution is required. Its application ensures that parts remain firmly in place under the dynamic conditions experienced by commercial trucks, contributing to the overall reliability and safety of the vehicle.

Key Features

The 3968470 Twelve Point Cap Screw is designed with several features that enhance its performance and durability. Its twelve-point head allows for increased contact area with the driving tool, reducing the risk of cam-out. The screw is made from high-strength materials, ensuring it can withstand the high torque and stress encountered in truck applications. Additionally, its threading is precision-cut to provide a secure fit and optimal load distribution, further contributing to the screw’s reliability in critical applications.

Benefits

The benefits of using the 3968470 Twelve Point Cap Screw include improved torque application due to its twelve-point design, which offers a more secure fit with hex keys. This design also contributes to resistance against loosening, a common issue with fasteners subjected to vibration and dynamic loads. Furthermore, the screw’s material composition and threading enhance the structural integrity of truck assemblies, ensuring components remain securely fastened under operating conditions.

Troubleshooting and Maintenance

Common issues associated with Twelve Point Cap Screws, such as loosening or corrosion, can be addressed through regular inspection and maintenance. Ensuring that screws are properly torqued during installation helps prevent loosening. In environments where corrosion is a concern, applying a suitable coating or using screws made from corrosion-resistant materials can extend their service life. Regular maintenance practices, including checking for signs of wear or damage, contribute to the longevity and reliable performance of these fasteners.

About Cummins

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 reputation for quality and innovation in the commercial truck industry. The company’s commitment to excellence is reflected in its wide range of products, which are designed to meet the demanding requirements of commercial vehicle applications. Cummins’ focus on quality, reliability, and performance makes it a preferred choice for truck manufacturers and fleet operators worldwide.

Twelve Point Cap Screw 3968470 in Cummins Engines

The Twelve Point Cap Screw 3968470, manufactured by Cummins, is a critical component in a variety of Cummins engines. This screw is designed to provide robust fastening capabilities, ensuring secure connections in high-stress environments. Below is a detailed description of how this part fits into different Cummins engines.

Cummins 4B3.9, 6B5.9, 6C8.3, and G5.9 Engines

In the Cummins 4B3.9, 6B5.9, 6C8.3, and G5.9 engines, the Twelve Point Cap Screw 3968470 is used to secure various engine components. These engines are known for their reliability and performance, and the screw’s design ensures that these attributes are maintained by providing a strong and stable connection.

Cummins B3.9 G, B4.5, B4.5 CM2350 B129B, B4.5 RGT, B5.9 CM2670 B166C, B5.9 G, B5.9 GAS PLUS CM556, B6.7 CM2350 B135B, B6.7 CM2670 B153B, B6.7 CM2670 B164C, B6.7 G CMOH6.0 B125, B6.7S, F3.8 CM2350 F120B, F3.8 CM2350 F128C, F3.8 CM2620 F137B, F4.5 CM2620 F139B, F4.5 CM2620 F141C, and G5.9 CM558 Engines

For the Cummins B3.9 G, B4.5, B4.5 CM2350 B129B, B4.5 RGT, B5.9 CM2670 B166C, B5.9 G, B5.9 GAS PLUS CM556, B6.7 CM2350 B135B, B6.7 CM2670 B153B, B6.7 CM2670 B164C, B6.7 G CMOH6.0 B125, B6.7S, F3.8 CM2350 F120B, F3.8 CM2350 F128C, F3.8 CM2620 F137B, F4.5 CM2620 F139B, F4.5 CM2620 F141C, and G5.9 CM558 engines, the Twelve Point Cap Screw 3968470 plays a vital role in maintaining the integrity of the engine’s structure. This screw is used in various applications, including securing engine blocks, cylinder heads, and other critical components. Its twelve-point design provides a better grip and reduces the likelihood of rounding off, ensuring a more reliable fastening.

Cummins ISB CM2150, ISB CM550, and ISB CM850 Engines

In the Cummins ISB CM2150, ISB CM550, and ISB CM850 engines, the Twelve Point Cap Screw 3968470 is utilized in several key areas. These engines are designed for heavy-duty applications, and the screw’s strength and durability are essential for maintaining the engine’s performance under demanding conditions. The screw is used to secure components such as engine mounts, brackets, and other structural elements, ensuring that the engine operates smoothly and efficiently.

By incorporating the Twelve Point Cap Screw 3968470 into these engines, Cummins ensures that the connections are secure, reliable, and capable of withstanding the stresses of heavy-duty operation. This attention to detail and use of high-quality components is a hallmark of Cummins’ commitment to excellence in engine manufacturing.

Role of Part 3968470 Twelve Point Cap Screw in Engine Systems

Part 3968470, a Twelve Point Cap Screw, is integral to the secure assembly and operation of various engine components. Its application spans across multiple areas, ensuring the stability and efficiency of the engine system.

Attachment and Mounting

The Twelve Point Cap Screw is commonly used in the attachment and mounting of components to the engine block. This includes securing the starting motor to its designated position. The screw’s design allows for a firm grip, minimizing the risk of loosening under engine vibrations. This is particularly important for the starting motor, where secure attachment ensures reliable engine starts and consistent performance.

Starting Motor Mounting Kit

In the context of a starting motor mounting kit, the Twelve Point Cap Screw plays a pivotal role. It is used to fasten the kit components to the engine, ensuring that the starting motor is correctly aligned and securely held in place. This alignment is essential for the efficient transfer of mechanical force from the starter to the engine, facilitating smooth and reliable engine startups.

Engine Installation

During engine installation, the Twelve Point Cap Screw is utilized to attach various engine components to the chassis or other structural elements. Its application in this phase is vital for maintaining the structural integrity of the engine assembly. The screw’s robust design ensures that components remain firmly in place, even under the dynamic conditions of engine operation.

General Mounting Applications

Beyond specific components, the Twelve Point Cap Screw is a versatile fastener used in various mounting applications throughout the engine system. Whether securing auxiliary components, brackets, or other engine parts, this screw provides the necessary strength and stability. Its use in these applications contributes to the overall reliability and durability of the engine system.

Conclusion

The 3968470 Twelve Point Cap Screw is a critical component in the maintenance and operation of commercial trucks and Cummins engines. Its design, featuring a twelve-point head and high-strength materials, ensures secure fastening in high-stress environments. The screw’s application across various engine components and systems highlights its versatility and importance in maintaining the reliability and performance of commercial vehicles. Regular maintenance and proper installation practices are essential to maximize the longevity and effectiveness of this part.