3074631
Twelve Point Cap Screw
Cummins®

The Twelve Point Cap Screw, Part #3074631, manufactured by Cummins, is a specialized fastener designed for use in commercial truck maintenance and operation. Cummins, a well-established name in the automotive industry, produces this component to meet the rigorous demands of heavy-duty applications. This part is integral to ensuring the reliability and efficiency of various truck systems, contributing to the overall performance and longevity of commercial vehicles.

Basic Concepts of Twelve Point Cap Screws

A twelve point cap screw is a type of fastener characterized by its hexagonal socket head, which provides a larger contact area compared to traditional hex-head screws. This design allows for higher torque application without the risk of cam-out, making it suitable for applications requiring secure fastening ¹. Unlike other fasteners, twelve point cap screws offer enhanced resistance to loosening due to their unique geometry, which reduces the likelihood of the tool slipping during installation or removal ².

Purpose of the 3074631 Twelve Point Cap Screw in Truck Operation

The 3074631 Twelve Point Cap Screw plays a specific role in the operation and maintenance of commercial trucks. It is utilized in various truck components and systems where secure and durable fastening is required. This includes applications in engine assemblies, transmission systems, and chassis components. By providing a reliable fastening solution, the 3074631 Twelve Point Cap Screw helps maintain the structural integrity and operational efficiency of these critical truck systems.

Key Features of the 3074631 Twelve Point Cap Screw

The 3074631 Twelve Point Cap Screw is distinguished by several key features that enhance its performance in heavy-duty applications. Its design includes a twelve-point socket head, which allows for increased torque application and reduced risk of cam-out. The screw is made from high-strength materials, ensuring durability under demanding conditions. Additionally, its precise manufacturing tolerances contribute to consistent performance and reliability in commercial truck environments ³.

Benefits of Using the 3074631 Twelve Point Cap Screw

Utilizing the 3074631 Twelve Point Cap Screw offers several advantages in commercial truck applications. The screw’s design enables improved torque application, which is crucial for securing heavy components. Its resistance to loosening ensures that fasteners remain tight under vibration and dynamic loads typical of truck operation. Furthermore, the durability of the 3074631 Twelve Point Cap Screw under harsh conditions contributes to the longevity and reliability of truck systems.

Installation and Usage Guidelines

Proper installation of the 3074631 Twelve Point Cap Screw is vital to ensure optimal performance and longevity. Recommended practices include using the appropriate torque specifications to avoid over-tightening or under-tightening. Utilizing the correct tools, such as a twelve-point socket wrench, ensures secure and damage-free installation. Following these guidelines helps maintain the integrity of the fastener and the components it secures.

Troubleshooting Common Issues

Common issues with the 3074631 Twelve Point Cap Screw may include corrosion, stripping, or loosening. Corrosion can be addressed through regular inspection and cleaning, while stripping may require the use of a properly sized tool to prevent damage. Loosening can often be mitigated by ensuring the correct torque is applied during installation and by inspecting fasteners regularly for signs of movement. Addressing these issues promptly helps maintain the reliability of truck systems.

Maintenance Recommendations

Routine maintenance of the 3074631 Twelve Point Cap Screw is important to prevent failures and ensure continued reliable operation. This includes regular inspection intervals to check for signs of wear, corrosion, or loosening. Cleaning the fastener and its surrounding area can prevent the buildup of contaminants that may affect performance. When signs of significant wear or damage are observed, considering replacement of the screw can help avoid potential failures.

Cummins: Manufacturer Overview

Cummins Inc. is a renowned manufacturer in the automotive industry, known for its high-quality components for commercial vehicles. With a history of innovation and commitment to excellence, Cummins has established a strong reputation for producing reliable and durable parts. The company’s dedication to quality is evident in its comprehensive range of products, including the 3074631 Twelve Point Cap Screw, which is designed to meet the demanding requirements of commercial truck applications.

Twelve Point Cap Screw 3074631 in Cummins Engines

The Twelve Point Cap Screw 3074631, manufactured by Cummins, is a critical component in various Cummins engine models. This screw is designed to provide robust fastening capabilities, ensuring secure connections in high-stress environments. Here is a detailed look at how this part integrates with different Cummins engines:

G855 Series

• G855
• G855 CM558

The Twelve Point Cap Screw 3074631 is utilized in the G855 series engines, including the G855 CM558, to secure various components, ensuring the integrity of the engine’s structure and performance.

ISX Series

• ISX CM570
• ISX CM870
• ISX CM871
• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

In the ISX series, the screw is employed in models such as the ISX CM570, ISX CM870, and ISX CM871. It also finds application in the ISX15 variants, including the ISX15 CM2250, ISX15 CM2250 SN, and ISX15 CM2350 X101, where it helps maintain the alignment and stability of critical engine parts.

K19 Series

• K19
• KTA19GC
• KTA19GC CM558

The Twelve Point Cap Screw 3074631 is integral to the K19 series, including the K19, KTA19GC, and KTA19GC CM558 engines. It ensures the secure attachment of components, contributing to the overall durability and reliability of these engines.

N14 Series

• N14 CELECT PLUS
• N14 G
• N14 MECHANICAL

In the N14 series, the screw is used in models such as the N14 CELECT PLUS, N14 G, and N14 MECHANICAL. It plays a crucial role in fastening various parts, ensuring the engine operates smoothly and efficiently.

NH/NT 855 Series

• NH/NT 855

The Twelve Point Cap Screw 3074631 is also used in the NH/NT 855 engine, where it helps secure components and maintain the engine’s structural integrity.

QSK19 Series

• QSK19 CM2350 K114
• QSK19 CM500
• QSK19 CM850 MCRS
• QSK19G
• QSNT14 CM876 N102

In the QSK19 series, the screw is used in models such as the QSK19 CM2350 K114, QSK19 CM500, QSK19 CM850 MCRS, QSK19G, and QSNT14 CM876 N102. It ensures the secure attachment of various parts, contributing to the engine’s performance and longevity.

QSX15 Series

• QSX15 CM2250 ECF
• QSX15 CM2350 X105

The Twelve Point Cap Screw 3074631 is also used in the QSX15 series, including the QSX15 CM2250 ECF and QSX15 CM2350 X105. It helps maintain the structural integrity of these engines by securing various components.

X15 Series

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

In the X15 series, the screw is used in models such as the X15 CM2350 X116B, X15 CM2350 X123B, and X15 CM2450 X134B. It ensures the secure attachment of components, contributing to the engine’s overall performance and reliability.

Role of Part 3074631 Twelve Point Cap Screw in Engine Systems

The part 3074631 Twelve Point Cap Screw is integral to the assembly and secure functioning of various engine components. Its application ensures that parts are held firmly in place, contributing to the overall stability and performance of the engine system.

In the context of the attachment of the starting motor to the engine, the Twelve Point Cap Screw plays a significant role. It is used to fasten the starting motor mounting bracket to the engine block, ensuring that the starting motor is securely positioned and can operate effectively without risk of displacement during engine operation.

When it comes to the flywheel housing, the Twelve Point Cap Screw is employed to attach the housing to the engine. This secure attachment is vital for maintaining the alignment and integrity of the flywheel housing, which in turn affects the operation of the flywheel. Proper fastening ensures that the flywheel can spin smoothly and transmit power efficiently without undue stress on the housing.

The housing components, in general, benefit from the use of the Twelve Point Cap Screw due to its ability to provide a strong and reliable connection. Whether it is the housing for the flywheel or other engine components, this screw ensures that the housing remains intact and functions as intended.

In the assembly of the motor, particularly the starting motor, the Twelve Point Cap Screw is used in multiple points of attachment. This includes securing the motor to its mounting bracket and ensuring that internal components within the motor are held in place. This contributes to the reliable starting of the engine, as all parts of the starting motor must be securely fastened to function correctly.

The starter motor mounting and starter spacer also utilize the Twelve Point Cap Screw to ensure that these components are correctly positioned and maintained in place. The starter motor mounting requires a secure attachment to the engine block to ensure that the starter motor can engage the flywheel effectively. The starter spacer, on the other hand, needs to be held firmly in place to maintain the correct distance and alignment between the starter motor and the flywheel, which is essential for the smooth operation of the starting system.

Overall, the part 3074631 Twelve Point Cap Screw is a fundamental component in the secure assembly and operation of various engine systems, ensuring that all parts are held firmly in place and can function as intended.

Conclusion

The 3074631 Twelve Point Cap Screw by Cummins is a critical component in the maintenance and operation of commercial trucks. Its unique design and high-strength materials make it suitable for heavy-duty applications, ensuring secure and durable fastening in various truck systems. Proper installation, regular maintenance, and prompt troubleshooting of common issues are essential to maximize the performance and longevity of this part. Cummins’ commitment to quality and innovation is reflected in the reliability and durability of the 3074631 Twelve Point Cap Screw, making it a fundamental component in the automotive industry.