3006735
Twelve Point Cap Screw
Cummins®

Introduction

The Twelve-Point Cap Screw, specifically Part #3006735 by Cummins, is a vital component in the maintenance and operation of commercial trucks. Cummins, a well-established manufacturer in the commercial truck industry, produces this part to meet the demanding requirements of heavy-duty applications. This overview will explore the significance of the Twelve-Point Cap Screw, its function, and the role it plays in truck maintenance.

Basic Concepts of Twelve-Point Cap Screws

A Twelve-Point Cap Screw is a type of fastener characterized by its hexagonal head with six additional points, providing a larger contact area for wrenches. This design allows for more torque to be applied with less risk of rounding off the head, which is particularly beneficial in high-stress mechanical assemblies ¹. These screws are commonly used in applications requiring secure fastening and resistance to loosening, such as in engine components, chassis assemblies, and various structural connections.

Purpose of the 3006735 Twelve-Point Cap Screw in Truck Operations

The 3006735 Twelve-Point Cap Screw by Cummins is designed to play a specific role in the operation and maintenance of commercial trucks. It is used in applications where secure and durable fastening is required, such as in engine mounts, transmission components, and chassis structures. The screw helps maintain the integrity of these critical assemblies, ensuring that they remain securely fastened under the rigors of heavy-duty use.

Key Features of the 3006735 Twelve-Point Cap Screw

The 3006735 Twelve-Point Cap Screw is engineered with several design elements and material properties that make it suitable for heavy-duty applications. Its twelve-point head design allows for greater torque application and reduces the likelihood of stripping ². The screw is made from high-strength materials, typically alloy steel, which provides excellent durability and resistance to wear. Additionally, it may feature a corrosion-resistant coating to enhance its performance in various environmental conditions.

Benefits of Using the 3006735 Twelve-Point Cap Screw

The 3006735 Twelve-Point Cap Screw offers several advantages for commercial truck applications. Its design allows for easy installation with standard tools, reducing the time and effort required during maintenance. The screw’s resistance to loosening ensures that critical components remain securely fastened, even under vibration and dynamic loads. Furthermore, its durability and corrosion resistance contribute to longer service life and reduced maintenance costs ³.

Installation Guidelines

Proper installation of the 3006735 Twelve-Point Cap Screw is crucial for ensuring optimal performance and longevity. Begin by cleaning the mating surfaces to remove any debris or corrosion. Use a torque wrench to install the screw, applying the manufacturer’s recommended torque specifications to avoid over-tightening or under-tightening. Ensure that the screw is aligned correctly with the fastener hole to prevent cross-threading. Finally, periodically check the tightness of the screw to maintain secure fastening over time.

Troubleshooting Common Issues

Common issues with Twelve-Point Cap Screws include loosening, corrosion, and damage to the head. To address loosening, ensure that the screw is properly torqued during installation and check it regularly for tightness. Corrosion can be mitigated by using screws with a corrosion-resistant coating and by applying a protective lubricant. If the head of the screw becomes damaged, it may be necessary to replace the screw to maintain secure fastening.

Maintenance Tips

Regular inspection and maintenance of the 3006735 Twelve-Point Cap Screw can help prevent failures and extend its service life. Inspect the screw periodically for signs of corrosion, loosening, or damage. Clean the screw and surrounding area to remove any buildup of dirt or debris. Apply a corrosion-resistant lubricant to protect the screw from environmental factors. If any issues are detected, address them promptly to prevent more significant problems.

Cummins: Manufacturer Overview

Cummins is a renowned manufacturer in the commercial truck industry, known for its high-quality engines, components, and aftermarket parts. Founded in 1919, Cummins has a long history of innovation and excellence, providing reliable and durable products for a wide range of applications. The company’s product range includes engines, filtration systems, powertrain components, and aftermarket parts, all designed to meet the demanding needs of commercial trucking. Cummins’ reputation for quality and performance makes it a trusted name in the industry.

Twelve-Point Cap Screw 3006735 in Cummins Engines

The Twelve-Point Cap Screw 3006735, manufactured by Cummins, is a critical component in various Cummins engine models. This screw is integral to the assembly and maintenance of these engines, ensuring secure fastening of parts and contributing to the overall structural integrity and performance of the engine.

Application in K19 Engines

In the K19 engine series, the Twelve-Point Cap Screw 3006735 is utilized in several key areas. Its design, featuring a twelve-point head, allows for efficient torque application, reducing the likelihood of rounding and providing a secure grip. This is particularly important in high-stress environments where the engine operates under significant load and vibration.

Grouping of Engines

The Twelve-Point Cap Screw 3006735 is not limited to the K19 series but is also employed across other Cummins engine groups. These include:

• K Series Engines: Beyond the K19, other K series engines such as the K11, K13, and K15 also incorporate this screw in their construction. The commonality in design across these models ensures that the screw fits seamlessly, providing a standardized approach to engine assembly and maintenance.

• L Series Engines: The L series engines, which are known for their durability and efficiency, also utilize the 3006735 screw. This consistency in part usage across different engine series highlights the reliability and versatility of the screw in various engine configurations.

Importance in Engine Assembly

The use of the Twelve-Point Cap Screw 3006735 in Cummins engines underscores its importance in the assembly process. Its robust design and precise manufacturing ensure that it can withstand the demanding conditions within the engine, contributing to the longevity and reliability of the engine components it secures. The screw’s role in maintaining the structural integrity of the engine is vital, as it helps to prevent loosening and failure of critical parts under operational stress.

Part 3006735 Twelve-Point Cap Screw Component Usage

The part 3006735 Twelve-Point Cap Screw is an essential fastening component utilized in various engine systems to ensure secure and reliable connections. Its application spans across multiple components, contributing to the overall integrity and functionality of the engine.

Crank Pulley

In the assembly of the crank pulley, the Twelve-Point Cap Screw plays a significant role. It is used to fasten the pulley to the crankshaft, ensuring that the pulley remains securely attached during engine operation. This secure attachment is vital for the proper transmission of rotational force from the crankshaft to the pulley, which in turn drives other engine components such as the alternator, water pump, and air conditioning compressor.

Engine Repair Stand

When an engine is removed from a vehicle for repair or maintenance, it is often placed on an engine repair stand. The Twelve-Point Cap Screw is employed to fasten various parts of the stand, ensuring that it remains stable and secure. This stability is important for safely supporting the engine during disassembly and reassembly processes, preventing any accidental movement that could lead to damage or injury.

Front PTO Pulley

The front PTO (Power Take-Off) pulley is another component where the Twelve-Point Cap Screw is utilized. This pulley is responsible for transferring power from the engine to external equipment, such as hydraulic pumps or agricultural implements. The cap screw ensures that the PTO pulley is firmly attached to the engine, allowing for efficient and reliable power transmission. This secure attachment is essential for the consistent operation of the connected equipment, ensuring that it functions as intended under various load conditions.

Conclusion

The 3006735 Twelve-Point Cap Screw by Cummins is a critical component in the maintenance and operation of commercial trucks and engines. Its robust design, high-strength materials, and corrosion-resistant properties make it suitable for heavy-duty applications. Proper installation, regular maintenance, and prompt troubleshooting of common issues are essential for ensuring the longevity and reliability of this part. Cummins’ reputation for quality and performance further underscores the importance of this screw in the commercial truck industry.