70772
Fillister Head Cap Screw
Cummins®

The Fillister Head Cap Screw, specifically Part #70772 by Cummins, is a specialized fastener commonly used in the assembly and maintenance of commercial trucks. Cummins Inc., a renowned manufacturer in the automotive industry, produces this screw. This document provides an overview of the Fillister Head Cap Screw, its applications, and the role it plays in truck operations.

Basic Concepts of Fillister Head Cap Screw

A Fillister Head Cap Screw is characterized by its flat-topped head with a slight taper and a slotted or cross-recessed indentation for a screwdriver. This design allows for secure fastening and easy removal. Unlike other screw types, such as hex-head or Phillips-head screws, the Fillister head provides a larger surface area for the screwdriver, reducing the risk of cam-out during tightening or loosening ¹.

Role of 70772 Fillister Head Cap Screw in Truck Operation

This Cummins part is utilized in various applications within commercial trucks. It plays a role in securing components such as engine covers, body panels, and other structural elements. Its design ensures a tight and durable connection, contributing to the overall integrity and performance of the truck ².

Key Features

This part is crafted from high-quality materials, typically steel or stainless steel, ensuring durability and resistance to corrosion. It features a threaded shank that allows for secure fastening into corresponding threaded holes. The head design of the screw facilitates easy installation and removal using standard tools, enhancing efficiency during assembly and maintenance procedures ³.

Benefits

Using the 70772 Fillister Head Cap Screw offers several advantages. Its robust construction provides improved fastening strength, reducing the likelihood of loosening over time. The screw’s design also allows for easy installation, minimizing downtime during truck maintenance. Additionally, its resistance to corrosion ensures longevity, even in harsh operating environments.

Troubleshooting and Maintenance

Common issues with Fillister Head Cap Screws may include loosening due to vibration or corrosion. Regular inspection and tightening of screws can help prevent such issues. In cases where corrosion is detected, replacing the affected screws with new ones is recommended to maintain optimal performance. Proper lubrication during installation can also enhance the screw’s longevity and reduce the risk of seizing.

About Cummins

Cummins Inc. is a global leader in the manufacturing of automotive components, with a reputation for quality and innovation. Founded in 1919, Cummins has a long-standing commitment to producing reliable and high-performance parts for various industries, including commercial trucking. The company’s dedication to excellence is reflected in its extensive product lineup, which includes the 70772 Fillister Head Cap Screw.

Cummins Fillister Head Cap Screw 70772 Compatibility with Engine Models

The Fillister Head Cap Screw part number 70772, manufactured by Cummins, is a versatile component that fits into a variety of engine models. This screw is designed to provide secure fastening in applications where a flush, streamlined appearance is essential. Below is a detailed overview of its compatibility with the listed engine models:

K-Series Engines

• K19
• K38
• K50

The Fillister Head Cap Screw 70772 is compatible with the K-Series engines, including the K19, K38, and K50. These engines are known for their robust design and reliability, making them suitable for a range of heavy-duty applications. The screw’s precision engineering ensures it can withstand the operational stresses of these engines.

L-Series Engines

• L10 MECHANICAL

The L10 MECHANICAL engine benefits from the Fillister Head Cap Screw 70772, which provides a secure and aesthetically pleasing fastening solution. This engine is designed for durability and efficiency, making it a popular choice in various industrial settings.

M-Series Engines

• M11 CELECT PLUS
• M11 MECHANICAL

Both the M11 CELECT PLUS and M11 MECHANICAL engines are compatible with the Fillister Head Cap Screw 70772. These engines are engineered for high performance and reliability, and the screw’s design ensures it can handle the demanding conditions these engines operate under.

N-Series Engines

• N14 CELECT
• N14 CELECT PLUS
• N14 MECHANICAL

The Fillister Head Cap Screw 70772 fits seamlessly with the N14 CELECT, N14 CELECT PLUS, and N14 MECHANICAL engines. These engines are known for their power and efficiency, and the screw’s compatibility ensures it can maintain secure fastening in these high-performance applications.

NH/NT Series Engines

• NH/NT 855

The Fillister Head Cap Screw 70772 is also suitable for the NH/NT 855 engine. This engine is designed for heavy-duty applications, and the screw’s robust construction ensures it can provide reliable fastening in demanding environments.

QSN Series Engines

• QSN14 CM876 N103
• QSNT14 CM876 N102

The Fillister Head Cap Screw 70772 is compatible with the QSN14 CM876 N103 and QSNT14 CM876 N102 engines. These engines are engineered for extreme conditions, and the screw’s design ensures it can maintain secure fastening under these challenging operational environments.

V-Series Engines

• V28
• V903

The Fillister Head Cap Screw 70772 is also suitable for the V28 and V903 engines. These engines are known for their versatility and performance, and the screw’s compatibility ensures it can provide reliable fastening in a variety of applications.

In summary, the Fillister Head Cap Screw 70772 is a versatile and reliable component that fits into a wide range of Cummins engine models, ensuring secure fastening and a streamlined appearance.

Role of Part 70772 Fillister Head Cap Screw in Engine Systems

The part 70772 Fillister Head Cap Screw is instrumental in securing and maintaining the integrity of various engine components. Its application spans across multiple systems, ensuring that each part functions optimally and remains in place under operational conditions.

Block Short Kit and Cylinder Block

In the block short kit and the cylinder block, the Fillister Head Cap Screw is used to fasten components that are essential for the structural integrity of the engine. It ensures that the block remains stable and aligned, which is fundamental for the engine’s performance and longevity.

Cylinder Head and Mounting

For the cylinder head and its mounting, the screw plays a significant role in securing the head to the block. This connection is vital for maintaining compression and preventing leaks, directly influencing the engine’s efficiency and power output.

Connecting Rod and Piston

Within the connecting rod and piston assembly, the Fillister Head Cap Screw is employed to secure components that connect the piston to the crankshaft. This ensures smooth operation and reduces the risk of mechanical failure during engine operation.

Fuel System Components

In the fuel system, including the fuel gear pump, fuel pump hardware, and various fuel pump configurations (KV12 uncalibrated, Woodward pump, etc.), the screw is used to secure fuel lines, pumps, and related hardware. This ensures a consistent fuel supply and prevents leaks, which are essential for engine performance and safety.

Injector and Pump Assemblies

The screw is also critical in securing injectors and fuel injection pumps. Proper fastening ensures that these components deliver fuel accurately and consistently, which is essential for combustion efficiency and overall engine performance.

Performance Parts

In EBM performance parts and other high-performance components, the Fillister Head Cap Screw is used to secure modifications and upgrades. This includes securing turbochargers, intercoolers, and other performance-enhancing parts, ensuring they withstand the increased stress and demands of a high-performance engine.

Miscellaneous Applications

Additionally, the screw is used in various other applications such as the cylinder head leak tester, ensuring that testing equipment remains secure and functions correctly. It also plays a role in securing parts within the sump and other ancillary components, contributing to the overall reliability and performance of the engine system.

Conclusion

The 70772 Fillister Head Cap Screw by Cummins is a critical component in the assembly and maintenance of commercial trucks and various engine systems. Its robust design, compatibility with a wide range of engine models, and the benefits it offers in terms of durability and ease of use make it an indispensable part in the automotive industry. Regular maintenance and proper use of this screw ensure the longevity and optimal performance of the vehicles it is used in.