Cummins Hexagon Flange Head Cap Screw 3901937 – Secure fastening for stable engine assemblies

The Cummins Hexagon Flange Head Cap Screw 3901937 is designed to provide strong, consistent fastening in demanding engine environments. As a standard item within the Cummins parts range, this fastener helps keep critical components firmly connected during operation. In addition, it follows Cummins genuine paers quality standards, which ensures accurate thread fit and reliable clamping force. Although small in size, this cap screw plays an important role in maintaining assembly integrity. Therefore, technicians often select it during engine assembly, component replacement, or routine maintenance. At the same time, proper fastening reduces vibration impact and helps protect surrounding parts from wear.

🔩 Specifications

• Part number: 3901937

• Product type: Hexagon flange head cap screw

• Brand compatibility: Cummins engines

• System location: Engine and auxiliary component assemblies

• Primary function: Securing components with integrated flange support

• Quality level: Cummins genuine paers compliant

⭐ Key Features

First, the integrated flange spreads load evenly across the contact surface. In addition, it reduces the need for a separate washer, which simplifies installation. Moreover, the hexagon head allows easy tightening with common tools. As a result, service time decreases and work accuracy improves. Also, the robust construction supports resistance to vibration during long operating hours. Because it belongs to trusted Cummins parts, users can rely on stable fastening performance throughout the service cycle.

⚙️ Technical Insights

The Cummins Hexagon Flange Head Cap Screw 3901937 combines a threaded shaft with a built-in flange that increases surface contact area. Therefore, it helps maintain consistent clamping force under changing loads. At the same time, the flange design helps limit loosening caused by vibration. When technicians replace worn fasteners with this cap screw, joint stability improves quickly. Consequently, connected components remain aligned and secure. Since it follows Cummins genuine paers design rules, it fits original threaded locations without adjustment.

🛠 Application Scenarios

This flange head cap screw is widely used in industrial engines, generator sets, and heavy-duty equipment. For example, it supports mounting of covers, brackets, housings, and structural parts. Likewise, it suits maintenance tasks where fasteners show signs of wear or corrosion. Service teams rely on Cummins parts like this cap screw to reduce rework and improve assembly reliability. Across these applications, Cummins genuine paers help maintain stable engine operation and consistent performance.

📦 Availability

This hexagon flange head cap screw 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 confirm compatibility with Cummins genuine paers before shipment.