3927948
Fracture Resistant Screw
Cummins®

Introduction to Fracture Resistant Screws

Fracture Resistant Screws (FRS) are specialized fasteners engineered to withstand extreme conditions and prevent failure under stress. These screws are essential in environments where standard screws might fail due to fatigue, vibration, or thermal stress. Cummins, a leading manufacturer in the automotive and heavy-duty truck industry, produces the 3927948 Fracture Resistant Screw to meet these demanding requirements ¹.

How Fracture Resistant Screws Work

A Fracture Resistant Screw is designed with a unique structure that enhances its durability and resistance to failure. The screw typically features a hardened steel core with a specialized coating or treatment that reduces the likelihood of cracking or breaking. The design often includes a stress-relief feature that distributes the load more evenly, preventing localized stress points that can lead to failure ².

Purpose of the Cummins 3927948 Fracture Resistant Screw

The Cummins 3927948 Fracture Resistant Screw plays a crucial role in the operation of commercial trucks. It is used in various applications within the engine, such as securing engine components, mounting brackets, and other critical parts. The primary purpose of this screw is to ensure that these components remain securely fastened under the extreme conditions experienced in heavy-duty truck operations ³.

Role in Truck Operations

In the context of truck engines, the 3927948 Fracture Resistant Screw is vital for maintaining the integrity of the engine assembly. By preventing screw failure, it helps to avoid costly downtime and repairs. This screw is particularly important in areas subject to high vibration, such as engine mounts and exhaust systems, where standard screws might fail prematurely ⁴.

Troubleshooting and Maintenance

Proper maintenance of the 3927948 Fracture Resistant Screw is essential to ensure its longevity and effectiveness. Regular inspections should be conducted to check for signs of wear, corrosion, or loosening. If a screw appears to be compromised, it should be replaced immediately to prevent potential engine damage.

Mechanics should also ensure that the threads and mating surfaces are clean and free of debris before installation. Using the correct torque specifications is critical to avoid over-tightening, which can cause the screw to strip or the component to crack. Cummins provides detailed guidelines on the proper installation and maintenance of their screws, which should be followed to maximize performance and reliability ⁵.

Cummins: A Leader in Truck Parts Manufacturing

Cummins is renowned for its high-quality, durable, and reliable truck parts. With decades of experience in the industry, Cummins has established itself as a trusted name among engineers, mechanics, and fleet operators. The company’s commitment to innovation and quality ensures that their parts, including the 3927948 Fracture Resistant Screw, meet the rigorous demands of heavy-duty truck operations ⁶.

Expertise and Authority

As an expert in commercial truck parts, it is clear that the Cummins 3927948 Fracture Resistant Screw is a critical component in ensuring the reliability and performance of truck engines. Its specialized design and robust construction make it an indispensable part of modern truck maintenance and repair practices. By understanding the purpose and maintenance of this screw, engineers and mechanics can better maintain the integrity of their fleets and ensure smooth, efficient operation.

Fracture Resistant Screw 3927948 Compatibility with Cummins Engines

The Fracture Resistant Screw part number 3927948, manufactured by Cummins, is designed to fit a variety of Cummins engines. This screw is engineered to withstand high stress and prevent fractures, ensuring reliable performance and longevity in demanding environments. Below is a detailed breakdown of the engines with which this part is compatible:

B Series Engines

• B3.9 G
• B4.5
• B4.5 CM2350 B129B
• B4.5 RGT
• B5.6 CM2670 B152B
• B5.9 G
• B5.9 GAS PLUS CM556
• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C
• B6.7 G CMOH
• B6.7S

F Series Engines

• F2.8 CM2620 D103B
• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102
• F4.5 CM2620 F139B
• F4.5 CM2620 F141C

G Series Engines

• G5.9
• G5.9 CM558

ISB (Chrysler)

• ISB (Chrysler)

This screw is integral to the assembly and maintenance of these engines, providing critical fastening where durability and resistance to failure are paramount.

Role of Part 3927948 Fracture Resistant Screw in Engine Systems

The part 3927948 Fracture Resistant Screw is instrumental in ensuring the secure assembly and reliable operation of various engine components. Its application spans across multiple critical areas within the engine system, enhancing both performance and durability.

Integration with Engine Blocks and Short Blocks

In the assembly of engine blocks and short blocks, the 3927948 screw plays a significant role in fastening components such as the cylinder block and cylinder short block. It ensures that these fundamental structures remain intact under the high stresses and vibrations encountered during engine operation. Whether it’s a short 6-bt block, short 6bt block, or short e2 incent block, the screw’s fracture resistance is vital for maintaining the integrity of these assemblies.

Application in Long Blocks and Service Blocks

For long blocks and long block kits, which include additional components like the crankshaft and bearings, the 3927948 screw is used to secure these parts within the engine block. This ensures that the crankshaft remains properly aligned and supported, which is essential for smooth engine operation. Similarly, in service blocks, the screw aids in the secure attachment of replacement or repair components, facilitating efficient maintenance procedures.

Use in Specialized Blocks

The screw is also employed in specialized blocks such as the short e1 180 block and short e215/235 block. These blocks often require precise component alignment and secure fastening to function correctly. The fracture-resistant properties of the 3927948 screw ensure that these blocks can withstand the operational stresses without failure.

Turbocharger Components

In the context of turbocharger oil drain connections and turbocharger plumbing, the 3927948 screw is used to secure fittings and connections. This is particularly important in high-performance engines where turbochargers are subjected to extreme conditions. The screw’s reliability helps prevent leaks and ensures that the turbocharger system operates efficiently.

Front Drive Adapter

The front drive adapter, which connects the engine to the drivetrain, also benefits from the use of the 3927948 screw. Secure fastening in this area is essential for transmitting power effectively from the engine to the transmission, ensuring smooth and reliable vehicle operation.

Cylinder and Crankshaft Assembly

In the assembly of the cylinder and crankshaft, the 3927948 screw is used to fasten various components, ensuring that the crankshaft is properly supported within the engine block. This is crucial for maintaining the engine’s balance and reducing wear on moving parts.

Conclusion

Overall, the 3927948 Fracture Resistant Screw is a versatile and reliable component that enhances the performance and durability of various engine systems. Its application across different engine blocks, turbocharger components, and critical assemblies underscores its importance in modern engine design and maintenance.