3960043
Fracture Resistant Screw
Cummins®

Introduction

The Fracture Resistant Screw 3960043, a specialized component from Cummins, is designed to withstand significant stress and resist fracture, making it ideal for demanding automotive and heavy-duty truck applications ¹. This screw ensures the structural integrity and reliable performance of various truck components under challenging conditions.

Basic Concepts of Fracture Resistant Screws

Fracture resistant screws are engineered to maintain structural integrity under high stress and load conditions ². They distribute forces evenly, minimizing breakage risk. These screws are made from high-strength steel alloys and manufactured using precise techniques to enhance fracture resistance. They are crucial in applications where failure could lead to significant operational disruptions or safety hazards.

Role of the 3960043 Fracture Resistant Screw in Truck Operation

The 3960043 screw is used in high-stress and vibration-prone components such as engine mounts, transmission housings, and chassis components ³. It ensures these critical connections remain intact, contributing to the truck’s overall stability and performance.

Key Features

The 3960043 screw features a robust thread profile for superior holding power, a high-strength steel alloy composition for excellent resistance to tensile and shear forces, and a corrosion-resistant coating to protect against environmental factors.

Benefits

Using fracture resistant screws like the 3960043 enhances safety by reducing the risk of component failure, ensures longevity for reliable truck operation, and provides enhanced durability and performance in demanding environments.

Troubleshooting and Maintenance

Regular inspection and maintenance of the 3960043 screw are recommended to ensure longevity and optimal performance. Maintenance practices should include periodic checks for tightness and integrity, cleaning, and reapplying protective coatings if necessary. Replacement procedures should follow manufacturer guidelines.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality and innovation in the automotive and heavy-duty truck industry. The company’s commitment to manufacturing high-quality components, like the 3960043 screw, underscores its dedication to enhancing vehicle performance and reliability worldwide.

Compatibility with Cummins Engines

The Fracture Resistant Screw 3960043 is compatible with a variety of Cummins engines, including:

• 6C8.3
• C GAS PLUS CM556
• C8.3 G
• G8.3
• G8.3 CM558
• GTA8.3 CM558
• ISC CM2150
• ISC CM554
• ISC CM850
• ISC8.3 CM2250
• ISL CM2150
• ISL CM554
• ISL G CM2180
• ISL9 CM2150 SN
• ISL9 CM2250
• ISL9.5 CM2880 L138
• L GAS PLUS CM556
• L8.9
• L8.9 CM2670 L134C
• L8.9 L121
• L8.9G CMOH2.0 L125B
• L9 CM2670 L128B
• L9.3 L105
• L9.5 L117
• QSC8.3 CM2880 C102

This screw is integral to the assembly and maintenance of these engines, providing a reliable fastening solution that meets the demanding conditions of engine operation.

Role in Engine Systems

The 3960043 screw is instrumental in ensuring the secure assembly and reliable operation of various engine components. Its applications include:

• Camshaft Assembly: Secures the camshaft to the cylinder head, maintaining precise alignment and timing.
• Connecting Rod and Piston: Attaches the connecting rod to the crankshaft, translating piston motion into rotational motion.
• Cylinder Block and Cylinder Block Kit: Secures components such as the cylinder head and fuel injectors.
• Cylinder Head and Fuel Injector: Mounts the fuel injector, ensuring a tight and secure fit.
• Fuel Manifold and Injector Plumbing: Secures fuel lines and injectors, withstanding high pressures and temperatures.
• Long Block and Short Block Assemblies: Fastens various components, including the cylinder head to the cylinder block.
• Performance Parts: Provides strength and reliability for high-performance cylinder heads or aftermarket fuel injectors.

Conclusion

The 3960043 Fracture Resistant Screw is a versatile and essential component in the assembly and operation of various engine systems. Its fracture-resistant properties, robust design, and compatibility with a wide range of Cummins engines make it a valuable asset for ensuring the durability, performance, and reliability of heavy-duty trucks and engines.