3913372
Hexagon Flange Head Cap Screw
Cummins®

The Cummins part 3913372, a Hexagon Flange Head Cap Screw, is a critical component in heavy-duty trucks. Cummins, a leading manufacturer in the industry, produces this screw to meet the stringent demands of heavy-duty applications. This part ensures the structural integrity and operational efficiency of trucks by securely fastening various components under strenuous conditions.

Basic Concepts

A Hexagon Flange Head Cap Screw is characterized by its hexagonal head and a flange—a flat, circular plate—attached to the underside of the head. This design facilitates efficient torque application and provides a larger bearing surface, which helps distribute the load more evenly. In mechanical systems, these screws are essential for securing components, ensuring stability and reliability under various operational stresses ¹.

Purpose and Role in Truck Operation

The 3913372 Hexagon Flange Head Cap Screw is designed to enhance the operation and maintenance of heavy-duty trucks. It is used in applications requiring high tensile strength and resistance to loosening. This screw ensures that critical components remain securely in place during truck operation, contributing to the overall safety and performance of the vehicle ².

Key Features

The 3913372 Hexagon Flange Head Cap Screw features a hexagonal head for easy tightening and loosening with standard tools. The flange provides additional surface area to distribute the load and prevent the screw from digging into the material. Made from high-strength materials, this screw ensures durability and resistance to wear and tear. Additionally, its design includes features that enhance resistance to vibration, which is crucial in the dynamic environment of a heavy-duty truck ³.

Benefits

Using the 3913372 Hexagon Flange Head Cap Screw offers several advantages. The high-strength material composition ensures enhanced durability, making it resistant to the rigors of heavy-duty use. The flange design provides additional stability, reducing the likelihood of the screw loosening over time. Furthermore, the hexagonal head allows for straightforward installation and removal, facilitating maintenance procedures.

Installation Process

Proper installation of the 3913372 Hexagon Flange Head Cap Screw is vital for optimal performance and longevity. The process involves selecting the appropriate drill bit to create a pilot hole, which helps in aligning the screw and reducing the risk of stripping the threads. The screw should be driven in using a torque wrench to the manufacturer’s specified torque settings to ensure it is tightened to the correct level without over-tightening, which could damage the threads or the material. It is also important to ensure that the flange is seated properly against the surface to maximize the load-bearing capabilities of the screw.

Troubleshooting Common Issues

Common issues with Hexagon Flange Head Cap Screws can include loosening, corrosion, and damage to the threads. To address these problems, regular inspections should be conducted to check for signs of wear or corrosion. If a screw is found to be loose, it should be re-tightened to the specified torque settings. In cases of corrosion, the affected area should be cleaned, and a corrosion-resistant coating may be applied to prevent further degradation. Damaged threads may require the use of a thread repair kit or replacement of the screw.

Maintenance Tips

To prolong the service life of the 3913372 Hexagon Flange Head Cap Screw and ensure continued reliable performance, regular maintenance is recommended. This includes periodic inspections for signs of wear, corrosion, or loosening. Applying a lubricant to the threads can help reduce friction and wear during operation. Additionally, ensuring that the screw is tightened to the correct torque specifications during installation and maintenance will help prevent over-tightening or under-tightening, which can lead to premature failure.

Cummins Overview

Cummins is a well-established company with a rich history in the heavy-duty truck industry. Founded in 1919, Cummins has grown to become a global leader in the design, manufacturing, and distribution of diesel and natural gas engines, as well as related technologies. The company’s product range includes engines, filtration systems, powertrain-related components, and emission solutions. Cummins is known for its commitment to quality, innovation, and customer satisfaction, making it a trusted name in the industry.

Hexagon Flange Head Cap Screw 3913372 Compatibility with Cummins Engines

The Cummins Hexagon Flange Head Cap Screw part number 3913372 is a versatile component designed to fit a variety of Cummins engines. This screw is essential for securing various parts within the engine assembly, ensuring structural integrity and proper function.

Cummins ISB Series

• ISB (Chrysler)
• ISB CM2150
• ISB CM550
• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB3.9 CM2220 B107

The ISB series engines utilize the 3913372 screw in various applications, securing components such as valve covers, oil pans, and other critical engine parts.

Cummins B Series

• 15N CM2380 M104B
• 4B3.9
• 6B5.9
• 6C8.3
• B4.5 CM2350 B129B
• B5.6 CM2670 B152B
• B5.9 CM2670 B166C
• B5.9 G
• B5.9 GAS PLUS CM556
• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C
• B6.7 G CMOH6.0 B125
• B6.7S
• C GAS PLUS CM556
• C8.3 G
• F4.5 CM2620 F139B
• G8.3

The B series engines incorporate the 3913372 screw, used in securing engine components such as cylinder heads, intake manifolds, and other critical parts.

Role of Part 3913372 Hexagon Flange Head Cap Screw in Engine Systems

The 3913372 Hexagon Flange Head Cap Screw is integral to the assembly and secure operation of various engine components. Its robust design ensures reliable fastening in high-stress environments, making it suitable for several critical applications within engine systems.

Air Compressor

In air compressor systems, the screw secures components such as the compressor housing to the engine block, ensuring efficient operation without risk of detachment or misalignment.

Compressor Coolant Plumbing

For compressor coolant plumbing, this screw is used to fasten coolant passages and fittings, ensuring proper sealing to maintain coolant flow and prevent leaks.

Connecting Rod and Piston

Within the connecting rod and piston assembly, the screw secures the connecting rod cap to the rod itself, demanding high tensile strength to withstand dynamic forces.

Crankcase Breather Arrangement

In the crankcase breather arrangement, the screw secures breather components, ensuring crankcase ventilation is maintained to reduce pressure build-up and contaminants.

Customer Wiring Connector Location

For customer wiring connector locations, the screw mounts wiring harnesses and connectors securely, ensuring electrical integrity and preventing disconnections.

Electrical Starting Accessories

In electrical starting accessories, such as starter motors, the screw fastens components firmly, ensuring reliable engagement and disengagement during engine start-up.

Engine Control Module (ECM) and Mounting

The ECM and its mounting bracket use this screw to ensure the module is securely attached to the engine or chassis, maintaining the ECM’s operational environment and protecting it from vibrations.

Engine Control Wiring Harness

Within the engine control wiring harness, the screw secures wiring harness components, ensuring they remain in place and are not damaged by engine vibrations.

Engine Instrument Panel and Instrumentation

For the engine instrument panel and instrumentation, the screw secures gauges and sensors to the panel, ensuring accurate readings and reliable operation.

Engine Lubricating Primer

In the engine lubricating primer system, the screw fastens components that deliver lubricant to critical engine parts, ensuring smooth operation and reduced wear.

Fan Drive

The fan drive system uses this screw to secure the fan to the engine, ensuring efficient cooling and preventing detachment under high RPMs.

Front and Rear Gear Train Accessory Drive

Both front and rear gear train accessory drives use the screw to secure gears and pulleys, ensuring accessory drives operate smoothly and efficiently.

Guard Package

In guard packages, the screw secures protective covers and guards, ensuring they remain in place and provide the intended protection for underlying components.

Oil Bypass Filter

For oil bypass filters, the screw secures the filter housing, ensuring a tight seal and efficient filtration of engine oil.

Performance Parts

In performance parts, such as upgraded intake manifolds or exhaust systems, the screw ensures these components are securely fastened, enhancing performance and reliability.

Power Take-Off Assembly

The power take-off assembly uses this screw to secure components that transfer engine power to auxiliary equipment, ensuring reliable operation.

Radiator Plumbing

In radiator plumbing, the screw secures fittings and hoses, ensuring a leak-free coolant system that maintains engine temperature within safe limits.

Rocker Lever

The rocker lever assembly uses the screw to secure levers and pivot points, ensuring precise valve operation and engine performance.

Signal Generating Device

For signal generating devices, such as sensors and transducers, the screw ensures these components are securely mounted, providing accurate data for engine management systems.

Throttle Lever

The throttle lever system uses this screw to secure the lever and linkage, ensuring precise control of engine speed and power delivery.

Turbocharger Plumbing

In turbocharger plumbing, the screw secures turbocharger components and plumbing, ensuring efficient boost delivery and preventing leaks.

Wiring Brace

Finally, wiring braces use this screw to secure wiring looms and harnesses, protecting them from damage and ensuring electrical reliability.

Conclusion

The 3913372 Hexagon Flange Head Cap Screw is a vital component in the realm of heavy-duty trucks, ensuring the structural integrity and operational efficiency of various engine systems. Its robust design, high tensile strength, and resistance to vibration make it suitable for critical applications within engine assemblies. Proper installation, regular maintenance, and troubleshooting common issues are essential to prolong its service life and ensure reliable performance.