Lock Nut 3004057 20 – Secure fastening for stable engine assemblies

The Lock Nut 3004057 20 is designed to keep fastened components firmly in place under vibration and load. As part of the Cummins parts range, this lock nut supports stable assembly across critical engine systems where loosening can lead to performance issues. Moreover, it is produced to align with Cummins genuine paers standards, which helps ensure consistent thread fit and dependable holding strength. Although simple in appearance, it plays a key role in overall engine reliability. Therefore, it is widely used in routine service, repair work, and complete engine rebuilds. At the same time, its practical design allows easy installation during maintenance.

🔩 Specifications

• Part number: 3004057 20

• Product type: Lock nut

• Brand compatibility: Cummins engines

• Primary function: Secures threaded connections

• Installation type: Threaded fastener with locking function

• Quality level: Cummins genuine paers compliant

⭐ Key Features

First, this lock nut helps prevent loosening caused by vibration, which supports stable engine operation. In addition, it maintains holding force during repeated load changes, so joint integrity remains reliable. Furthermore, the precision threading supports smooth installation without damage to mating parts. As a result, assembly quality improves. Also, the nut supports repeated service use without loss of function. Because it belongs to trusted Cummins parts, consistency across maintenance tasks is easier to achieve.

⚙️ Technical Insights

The Lock Nut 3004057 20 works by adding resistance to rotation once tightened. Therefore, it stays secure even in high-vibration environments. Meanwhile, the metal structure supports stable clamping force during temperature changes common in engine systems. Compared with standard nuts, this design offers better long-term fastening security. Consequently, the risk of fastener-related failure is reduced. Since it follows Cummins genuine paers guidelines, it matches original engine assembly requirements.

🛠 Application Scenarios

This lock nut is commonly used in engine assemblies, mounting brackets, and accessory systems. For example, it supports secure fastening in areas exposed to continuous vibration. Likewise, it is suitable for overhaul projects where fastener reliability is critical. In addition, fleet maintenance teams rely on Cummins parts like this to reduce rework and downtime. Across these scenarios, secure fastening helps protect surrounding components and maintain system stability.

📦 Availability

This lock nut is in stock and available for global shipping. To ensure correct fitment with your Cummins parts configuration, please provide your engine serial number (ESN). Our support team is ready to assist with verification and to confirm compatibility with Cummins genuine paers before shipment.