3071161
Hexagon Head Cap Screw
Cummins®

Introduction

The Hexagon Head Cap Screw, specifically part #3071161 manufactured by Cummins, is crucial for the assembly and maintenance of commercial truck components. This screw ensures secure fastening in various truck applications, maintaining the integrity and functionality of critical systems.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is characterized by its hexagonal head, which allows for efficient tool engagement. This design facilitates torque application, making installation and removal easier with common hand tools or wrenches. The hexagonal shape prevents tool slippage, enhancing precision and safety during fastening ¹.

Purpose and Application of Part #3071161

This Cummins part is used in various truck operations to secure components and assemblies. It is essential in applications requiring strong, reliable fastening to withstand commercial truck use. This screw ensures the structural integrity of truck components under dynamic conditions ².

Key Features

The 3071161 Hexagon Head Cap Screw features high-strength materials, typically steel, providing the necessary tensile strength for heavy-duty applications. It has a specific thread type for a tight, secure fit and may include coatings like zinc plating to improve corrosion resistance and extend service life in harsh environments ³.

Benefits

Using the 3071161 Hexagon Head Cap Screw offers improved fastening security, resistance to vibration loosening, and enhanced corrosion resistance. These attributes are valuable in commercial truck operations, where components face significant stress and environmental exposure. The screw’s design and material properties help maintain truck assembly integrity, reducing failure risk and ensuring reliable performance.

Troubleshooting and Maintenance

Common issues with Hexagon Head Cap Screws, such as stripping or seizing, can be mitigated through proper installation techniques and regular maintenance. Ensuring screws are tightened to the correct torque specifications prevents over-tightening, which can lead to stripping, or under-tightening, which can result in loosening. Regular inspections and re-tightening help maintain fastening integrity and prolong screw service life.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes diesel and natural gas engines and related technologies. With a history of innovation and a commitment to quality, Cummins provides components and solutions for the commercial truck industry. Their expertise ensures that products like the 3071161 Hexagon Head Cap Screw meet the high standards required for reliable and efficient truck operations.

Hexagon Head Cap Screw 3071161 in Cummins Engines

The 3071161 Hexagon Head Cap Screw is a critical component in several Cummins engine models, ensuring secure fastening and structural integrity.

G855 Series

In the G855 engines, this part is used in the assembly of the engine’s head and other critical components, ensuring they remain securely fastened under high-stress conditions.

G855 CM558 and GTA855 CM558 (CM2358)

For these engines, the 3071161 screw is vital for assembling the cylinder head and related parts, maintaining engine performance and longevity.

G101

In the G101 engine, this screw is used in various applications, including securing the engine block and other structural components, crucial for the engine’s stability and efficiency.

N14 Series

The N14 CELECT and N14 CELECT PLUS engines utilize the 3071161 screw in several key areas, such as the engine block and head assembly, ensuring smooth and efficient operation.

N14 G and N14 MECHANICAL

In these engines, the 3071161 screw is employed in the assembly of the engine’s head and other critical parts, maintaining performance and longevity.

NH/NT 855

For the NH/NT 855 engines, this screw is used in various applications, including securing the engine block and other structural components, crucial for overall stability and efficiency.

QSN14 CM876 N103 and QSNT14 CM876 N102

In these engines, the 3071161 screw is utilized in the assembly of the engine’s head and other related parts, ensuring precision and strength for maintaining performance and longevity.

Role of Part 3071161 Hexagon Head Cap Screw in Engine Systems

This part is integral to the assembly and maintenance of various engine components, ensuring robust and reliable connections.

Cam Follower Housing

In the cam follower housing, the Hexagon Head Cap Screw ensures secure attachment to the engine block, maintaining precise alignment and operation of the cam followers.

Camshaft and Camshaft and Gear

For the camshaft and camshaft and gear assemblies, this screw fastens the camshaft to the cylinder head or engine block and secures the camshaft gear, maintaining timing between the crankshaft and camshaft.

Connecting Rod and Piston

In the connecting rod and piston assembly, these screws secure the connecting rod cap to the rod itself, efficiently transferring force from the piston to the crankshaft.

Crosshead

In engines with a crosshead design, the Hexagon Head Cap Screw secures the crosshead to the connecting rod, accurately converting linear piston motion into rotational crankshaft motion.

Cylinder Block and Cylinder Head

The screw is used in both the cylinder block and cylinder head to fasten various components such as sensors, brackets, and mounting points, ensuring structural integrity and operational stability.

Cylinder Mounting Head

For the cylinder mounting head, the Hexagon Head Cap Screw secures the head to the engine block, maintaining the seal and preventing leaks that could compromise engine performance.

Dataplate

Although not a mechanical component, the dataplate is often secured using these screws, ensuring it remains firmly attached to the engine, providing essential information about the engine’s specifications and maintenance history.

EBM: Performance Parts

In performance parts provided by EBM, the Hexagon Head Cap Screw secures high-stress components requiring a strong and durable fastening solution, such as turbochargers and fuel connections.

Fuel Connection and Injector Plumbing

For fuel connections and injector plumbing, these screws ensure all components are tightly secured, preventing leaks and ensuring consistent fuel delivery to the engine.

Head Cylinder and Injector

In the head cylinder and injector systems, the Hexagon Head Cap Screw secures injectors and other components, ensuring proper alignment and sealing for optimal fuel injection and combustion.

PDC and Performance Parts

In systems involving PDC and other performance parts, these screws are critical for securing components operating under high stress and requiring precise alignment.

Turbocharger

In turbocharger assemblies, the Hexagon Head Cap Screw secures various parts, ensuring efficient and reliable operation under high-performance conditions.

Conclusion

The 3071161 Hexagon Head Cap Screw by Cummins is a vital component in the assembly and maintenance of commercial truck and engine systems. Its robust design, high-strength materials, and precise application ensure the structural integrity and reliable performance of critical components. Proper installation and maintenance of this screw are essential for the longevity and efficiency of truck and engine operations.