3925381
Hexagon Flange Head Cap Screw
Cummins®

The 3925381 Hexagon Flange Head Cap Screw, manufactured by Cummins, is a critical component in the automotive and heavy-duty truck industry. This screw ensures secure fastening and reliable performance under demanding conditions.

Basic Concepts

A Hexagon Flange Head Cap Screw is characterized by its hexagonal head and flanged base. The hexagonal head allows for efficient torque application, while the flange distributes clamping force, enhancing the security of fastened components.

Purpose and Role in Truck Operation

This Cummins part is used in applications requiring high tensile strength and resistance to loosening. It secures critical components, contributing to the safety and efficiency of heavy-duty trucks.

Key Features

The 3925381 features a hexagonal head for easy tightening, a flange for enhanced force distribution, and is made from high-quality materials for durability and corrosion resistance.

Benefits

This part offers enhanced durability, reduced risk of loosening, and ease of installation, simplifying maintenance procedures.

Installation Process

Proper installation involves cleaning mating surfaces, using a torque wrench to apply specified torque, and applying a thread locker to prevent loosening. Regular inspections for wear or damage are recommended.

Troubleshooting and Maintenance

Common issues include loosening, corrosion, and damage from over-tightening. Regular inspections and the use of thread lockers and protective coatings can help maintain the screw’s integrity.

Cummins: Manufacturer Overview

Cummins, founded in 1919, is a global leader in diesel and natural gas engines. Their commitment to quality is reflected in rigorous testing and quality control processes, ensuring high standards of durability and performance for components like the 3925381 ¹.

Cummins Engine Compatibility with Hexagon Flange Head Cap Screw Part 3925381

The 3925381 is designed to fit various Cummins engines, ensuring structural integrity and operational efficiency. Compatible engines include:

• 15N Series: 15N CM2380 M104B, ISB4.5 CM2350 B104
• 4B and 6B Series: 4B3.9, 6B5.9
• B Series: B4.5 CM2350 B129B, B6.7 G CMOH6.0 B125
• F Series: F3.8 CM2350 F120B, F3.8 CM2620 F137B, F4.5 CM2620 F139B, F4.5 CM2620 F141C
• I Series: ISC CM2150, ISC CM850, ISC8.3 CM2250, ISF4.5 CM2220 F123, ISG12 G CMOH6.0 G111, ISL CM2150, ISL9 CM2150, ISL9 CM2150 SN, ISL9 CM2250
• L Series: L8.9G CMOH2.0 L125B
• QSC and QSL Series: QSC8.3 CM850(CM2850), QSF3.8 CM2880 F112, QSL8.9 CM2150 L141, QSL9 CM850(CM2850)
• X12N Series: X12N CMMDG1 X143B

Role of Part 3925381 Hexagon Flange Head Cap Screw in Engine Systems

The 3925381 is instrumental in securing various engine components, ensuring stability and proper function. Its applications include:

• Gauge and Oil Level: Securing gauge housing to the engine block or dashboard.
• Harness and ECM Wiring: Organizing wiring harnesses to reduce chafing or disconnection.
• Heat Shield and Kit: Attaching heat shields to high-temperature components.
• TPS and Plumbing: Securing the TPS to the throttle body and clamping plumbing connections.
• Air Fuel Control and Fuel Supply: Fastening fuel injectors and securing fuel lines.
• Turbocharger and Sensor: Attaching the turbocharger to the engine block and securing sensors.
• Coolant Level and Shield: Attaching the coolant level sensor and securing coolant shields.
• System and Gear Shift Control: Fastening control modules and gear shift mechanisms.

Conclusion

The 3925381 Hexagon Flange Head Cap Screw is a vital component in the assembly and maintenance of heavy-duty trucks and Cummins engines. Its design, featuring a hexagonal head and flange, ensures secure fastening and reliable performance. Proper installation and maintenance are crucial to maximize its benefits and ensure the longevity and efficiency of the components it secures.