Cummins Hex Flange Head Cap Screw 3900629 – Strong, Stable, and Built for Engine Reliability
The Cummins Hex Flange Head Cap Screw 3900629 offers a simple yet powerful solution for fastening components in high-performance diesel engines. Because of its integrated flange, it spreads the tightening force across a larger surface—reducing stress and helping prevent part damage. As a part of trusted DCEC parts, it fits perfectly into various Cummins parts systems, ensuring both durability and precision.
Unlike ordinary fasteners, this screw holds firm even in environments with strong vibration or extreme heat. Plus, it’s built to Cummins genuine parts standards, giving you peace of mind during critical installations.
📦 Specifications
- Part Number: 3900629
- Part Name: Hex Flange Head Cap Screw
- Material: Heat-treated steel alloy
- Surface Finish: Anti-corrosion coating
- Condition: 100% Brand New
- Category: Engine Fasteners
- Origin: Produced to exact Cummins OEM standards
- Compatibility: Suitable for a wide range of Cummins parts and DCEC parts setups (verify with ESN)
✅ Key Features
- Distributes clamping pressure evenly thanks to the flange design
- Maintains tight fit under high vibration and thermal cycles
- Made from high-strength, rust-resistant steel
- Offers consistent performance in both new builds and repairs
- Works seamlessly in DCEC parts and Cummins genuine parts assemblies
🔧 Technical Insights
First, the flanged head improves grip by increasing contact area, which eliminates the need for washers. Next, the thread design ensures fast and accurate torque application, helping you achieve secure connections with less effort. Moreover, the material is tough enough to withstand repeated stress, so you can rely on this fastener even in heavy-duty diesel applications.
Because it meets OEM specs, it integrates smoothly with other Cummins parts, preserving the strength and precision of your engine system.
💡 Application Scenarios
The 3900629 Hex Flange Head Cap Screw is ideal for use in:
- 🔹 Diesel engine assemblies using DCEC parts that require vibration-resistant fastening
- 🔹 Cylinder head mounting and component framing in Cummins genuine parts setups
- 🔹 Heavy vehicles and machinery with demanding mechanical loads
- 🔹 Power generation units built with Cummins parts
- 🔹 Engine service, overhaul, and repair projects where fit and durability matter
🚚 Availability
We have the Cummins 3900629 Cap Screw in stock and ready for quick global shipping.
To make sure it fits your specific application, please send us your Engine Serial Number (ESN). Our team is happy to help confirm compatibility with your DCEC parts system.
