3170821
Fillister Head Cap Screw
Cummins®

Introduction

The Fillister Head Cap Screw, a component utilized in various mechanical assemblies, including heavy-duty truck components, is manufactured by Cummins, a reputable name in the industry. This screw is designed to meet the demanding requirements of truck operations, underscoring its significance in ensuring the integrity and functionality of truck components.

Basic Concepts of Fillister Head Cap Screw

A Fillister Head Cap Screw is characterized by its flat-topped head with a groove running across the top, designed to accommodate a screwdriver. This design allows for efficient tightening and loosening. Within mechanical assemblies, these screws serve to fasten components securely, distributing load and stress across the joint. Their threading ensures a tight fit, which is crucial for maintaining the structural integrity of the assembly ¹.

Purpose of the 3170821 Fillister Head Cap Screw in Truck Operations

This Cummins part plays a role in the operation and maintenance of heavy-duty trucks by securing critical components. Its design and material composition are tailored to withstand the rigors of truck operations, including vibrations and varying loads. This screw is integral to maintaining the alignment and stability of truck components, contributing to the overall safety and efficiency of the vehicle ².

Key Features

The 3170821 features a specific head design that facilitates easy installation and removal. It is composed of materials that offer durability and resistance to corrosion, ensuring longevity in harsh operating environments. The threading of the screw is designed to provide a secure fit, minimizing the risk of loosening over time ³.

Benefits

Utilizing the 3170821 offers several advantages. Its durable construction and resistance to corrosion contribute to enhanced longevity. The design of the screw head allows for straightforward installation and removal, reducing maintenance time. Additionally, the secure fit provided by the threading minimizes the likelihood of loosening, which is particularly beneficial in the dynamic environment of heavy-duty truck operations ⁴.

Installation and Usage

Proper installation of the 3170821 involves adhering to specified torque values to ensure a secure fit without over-tightening, which could damage the screw or the component it is fastening. Recommended tools for installation include a torque wrench to achieve the precise tightening required. Following manufacturer guidelines for installation ensures the screw performs its intended function effectively ¹.

Troubleshooting and Maintenance

Common issues with the 3170821 may include loosening or corrosion. Regular inspection and maintenance can help identify these issues early. Maintenance practices should include checking for proper torque and signs of wear or corrosion. Replacement should be considered if the screw shows significant wear or if it no longer provides a secure fit ².

Cummins: Manufacturer Overview

Cummins is a well-established manufacturer in the automotive and heavy-duty truck industry, known for its commitment to quality and innovation. With a history of producing reliable components, Cummins has built a reputation for excellence. Their focus on quality ensures that products like the 3170821 meet the high standards required for heavy-duty applications ³.

Cummins Fillister Head Cap Screw 3170821 in Engine Applications

The Fillister Head Cap Screw 3170821, manufactured by Cummins, is a critical component in various engine assemblies. This part is designed to secure different engine parts together, ensuring structural integrity and operational efficiency.

In the K50 engine series, the 3170821 is utilized in several key areas. It is commonly employed in the engine’s cylinder head assembly, where it helps to maintain the alignment and stability of the cylinder head bolts. This is crucial for preventing leaks and ensuring that the engine operates at optimal performance levels.

Additionally, this screw is often found in the engine’s valve train system, where it secures various components such as valve covers and rocker arms. Its design allows for precise torque application, which is essential for maintaining the tight tolerances required in high-performance engines.

In Cummins’ broader engine lineup, the 3170821 is also used in auxiliary systems, including the engine’s cooling and lubrication systems. Its robust construction and precise fitment make it an ideal choice for applications that require reliable fastening under varying operational conditions.

The use of the 3170821 across different engine models underscores its versatility and importance in ensuring the longevity and reliability of Cummins engines ⁴.

Part 3170821 Fillister Head Cap Screw Component Usage

The Fillister Head Cap Screw, identified by part number 3170821, is integral to the assembly and operation of various engine systems. Its role is to provide secure fastening in multiple components, ensuring the structural integrity and proper function of these systems.

In the Centinel Make-Up Kit, the Fillister Head Cap Screw is used to fasten components that regulate the make-up oil flow, ensuring consistent lubrication to vital engine parts.

Within the HHP 12V VLV/ELEC Kit and HHP 24V VLV/ELEC Kit, this screw plays a part in securing electrical and valve components, which are essential for the precise control of engine functions.

For the QKS Valve & Mounting Kit, the Fillister Head Cap Screw is employed to attach the valve assembly to its mounting bracket, guaranteeing a stable and reliable connection.

In the N14 12V Pressure-Time Centinel Kit and N14 24V Hardware-Pressure-Time Valve/Mounting Kit, it secures hardware that monitors and maintains pressure and time parameters, critical for engine performance and safety.

Lastly, in the Oil Replenishing System, the screw is utilized to fasten components that manage the replenishment of oil, ensuring the engine maintains optimal lubrication levels.

Throughout these applications, the Fillister Head Cap Screw ensures that components remain securely in place, contributing to the overall reliability and efficiency of the engine systems.

Conclusion

The 3170821 Fillister Head Cap Screw by Cummins is a vital component in the maintenance and operation of heavy-duty trucks and various engine systems. Its design, durability, and resistance to corrosion make it an essential part for ensuring the structural integrity and efficiency of mechanical assemblies. Proper installation, regular maintenance, and understanding its role in different applications are key to maximizing its benefits and ensuring the longevity of the components it secures.