191772
Twelve Point Cap Screw
Cummins®

The Twelve Point Cap Screw, identified by Part #191772, is a component manufactured by Cummins, a well-established name in the commercial truck industry. This part plays a role in the maintenance and operation of commercial trucks, ensuring the integrity and efficiency of various mechanical assemblies.

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 increased contact area and reduced cam-out during tightening. This design facilitates more precise torque application compared to traditional hex-head screws. Twelve Point Cap Screws are commonly used in applications requiring high strength and resistance to loosening, making them suitable for a variety of mechanical assemblies, including engine components, chassis parts, and other critical truck systems ¹.

Role of the 191772 Twelve Point Cap Screw in Truck Operation

The 191772 Twelve Point Cap Screw serves a specific purpose within the framework of commercial truck components. It is typically employed in areas where secure fastening is paramount, such as engine mounts, transmission housings, and other high-stress areas. Its function is to provide a reliable connection between components, ensuring that they remain securely fastened under operational conditions ².

Key Features

The 191772 Twelve Point Cap Screw is distinguished by several key features. Its design incorporates a twelve-point socket head, which enhances torque application and reduces the risk of cam-out. The screw is constructed from high-strength materials, ensuring durability and resistance to wear. Additionally, it may feature a corrosion-resistant coating, which extends its service life in harsh environments ³.

Benefits of Using the 191772 Twelve Point Cap Screw

Utilizing the 191772 Twelve Point Cap Screw offers several advantages. Its design allows for more precise torque application, reducing the likelihood of over-tightening or under-tightening. The screw’s resistance to loosening ensures that connections remain secure over time, even under vibration and dynamic loads. Furthermore, its ease of installation, thanks to the twelve-point head, simplifies the fastening process and reduces installation time.

Installation and Usage Guidelines

Proper installation of the 191772 Twelve Point Cap Screw involves several steps. First, ensure that the mating surfaces are clean and free of debris. Use a torque wrench to apply the specified torque, which can be found in the manufacturer’s guidelines, to achieve a secure fit without over-tightening. It is also advisable to apply a thread locker to the screw threads to prevent loosening over time.

Troubleshooting Common Issues

Common issues with Twelve Point Cap Screws include loosening and corrosion. To address loosening, ensure that the screw is properly torqued during installation and consider using a thread locker. Corrosion can be mitigated by selecting screws with a corrosion-resistant coating and by regularly inspecting and cleaning the fastener and its surroundings.

Maintenance Tips

Regular maintenance of the 191772 Twelve Point Cap Screw is key to ensuring its longevity and reliable performance. Inspect the screw and its connections at regular intervals for signs of wear, corrosion, or loosening. Cleaning the screw and its mating surfaces can prevent the buildup of debris and corrosion. Re-torque the screw as necessary to maintain a secure connection.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a rich history dating back to 1919, Cummins has established a strong reputation in the commercial truck industry for producing reliable and high-performance components. The company’s product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of commercial trucking applications.

Twelve Point Cap Screw 191772 Compatibility with Cummins Engines

The Twelve Point Cap Screw part number 191772, manufactured by Cummins, is a versatile component that fits a wide range of Cummins engines. This screw is designed to provide a secure fastening solution, ensuring the integrity of various engine components. Below is a detailed overview of the engines with which this screw is compatible.

GTA38 G CMEICS G116C, ISM CM570, K19, K38, K50, KTA38GC CM558

The Twelve Point Cap Screw 191772 is compatible with the GTA38 G CMEICS G116C, ISM CM570, K19, K38, K50, and KTA38GC CM558 engines. This screw is used in these engines to secure various parts, ensuring that they remain tightly fastened and in place during operation.

L10 CELECT, L10 MECHANICAL, M11 CELECT, M11 CELECT PLUS, M11 MECHANICAL

The engines L10 CELECT, L10 MECHANICAL, M11 CELECT, M11 CELECT PLUS, and M11 MECHANICAL also utilize the Twelve Point Cap Screw 191772. This screw is essential for maintaining the structural integrity of these engines, providing a reliable fastening method for multiple components.

N14 CELECT, N14 CELECT PLUS, N14 MECHANICAL

The N14 CELECT, N14 CELECT PLUS, and N14 MECHANICAL engines are designed to work with the Twelve Point Cap Screw 191772. This screw is crucial for the secure attachment of various parts within these engines, ensuring optimal performance and longevity.

NH/NT 855

The NH/NT 855 engine is another application for the Twelve Point Cap Screw 191772. This screw is integral to the assembly and maintenance of this engine, providing a dependable fastening solution for its components.

QSK19 CM2350 K105, QSK19 CM2350 K114, QSK19 CM2350 K144G, QSK19 CM500, QSK19 CM850 MCRS, QSK19G, QSK38 CM2150 MCRS, QSK38 CM850 MCRS, QSK45 CM500, QSK50 CM2150 K107

The Twelve Point Cap Screw 191772 is compatible with a range of QSK engines, including QSK19 CM2350 K105, QSK19 CM2350 K114, QSK19 CM2350 K144G, QSK19 CM500, QSK19 CM850 MCRS, QSK19G, QSK38 CM2150 MCRS, QSK38 CM850 MCRS, QSK45 CM500, and QSK50 CM2150 K107. This screw is used to secure various components within these engines, ensuring that they remain tightly fastened and operational.

This comprehensive compatibility of the Twelve Point Cap Screw 191772 with a wide range of Cummins engines underscores its importance in maintaining the structural integrity and performance of these engines.

Role of Part 191772 Twelve Point Cap Screw in Engine Systems

Part 191772, a Twelve Point Cap Screw, is integral to the assembly and securement of various components within engine systems. Its application spans across multiple critical areas, ensuring the stability and functionality of the engine.

Base and Block Assembly

In the base and block assembly, the Twelve Point Cap Screw is utilized to fasten the base parts securely to the engine block. This connection is vital for maintaining the structural integrity of the engine, allowing for efficient power transmission and minimizing vibrations.

Cylinder and Exhaust Systems

For the cylinder K-6 (Ser.) and exhaust outlet, the screw plays a role in securing the exhaust connection to the cylinder. This ensures a tight seal, preventing exhaust leaks and maintaining optimal engine performance. Additionally, it is used in the brace and harness assembly to reinforce the exhaust system, enhancing durability under high-temperature conditions.

Cover and Mounting Components

The Twelve Point Cap Screw is essential in attaching covers, such as the hand hole cover and cover mounting gear, to the engine. This not only protects internal components but also aids in easy access for maintenance purposes. In the fan drive cover and fuel block mounting, it ensures that these covers are securely fastened, contributing to the overall safety and efficiency of the engine operation.

Fuel and Lubrication Systems

Within the fuel supply and drain block, as well as the lubricating oil adapter and filter, the screw is used to maintain the integrity of connections. This is particularly important in the lubricating oil pump and cooler, where secure fastening prevents leaks and ensures consistent oil flow, which is vital for engine lubrication and cooling.

Hydraulic and Torque Systems

The hydraulic pump adapter and torque converter cooler rely on the Twelve Point Cap Screw for secure attachment. This is crucial for the efficient operation of hydraulic systems and the management of torque within the engine, directly impacting performance and reliability.

Turbocharger and Water Systems

In the turbocharger mounting kit and water pump, the screw ensures that these components are firmly attached to the engine. This is essential for the turbocharger’s ability to enhance engine power and the water pump’s role in maintaining engine temperature, both of which are critical for engine longevity and performance.

Additional Applications

The screw is also used in the kit 3-groove crank pulley, lube oil filter/co, and water connection, further demonstrating its versatility and importance in various engine components. Each application requires precise fastening to ensure the component functions as intended, contributing to the engine’s overall efficiency and reliability.

Conclusion

The 191772 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 socket head, allows for precise torque application and resistance to loosening, ensuring secure fastening in high-stress areas. The screw’s compatibility with a wide range of Cummins engines underscores its versatility and importance in maintaining engine integrity and performance. Proper installation, regular maintenance, and troubleshooting common issues are essential for maximizing the lifespan and reliability of this Cummins part.