Cummins Heavy Hexagon Jam Nut S274-20 – Secure Fastening for Cummins Engines
The Cummins Heavy Hexagon Jam Nut S274-20 is a genuine CCEC part built for secure fastening in demanding engine environments. It locks components in place, prevents loosening from vibration, and ensures long-term reliability. Because it is manufactured to Cummins’ precise specifications, it offers consistent performance, even under high torque and heavy load conditions.
📋 Specifications
- Part Name: Cummins Heavy Hexagon Jam Nut
- Part Number: S274-20
- Brand: Cummins / CCEC Genuine Parts
- Type: Heavy-duty hexagonal jam nut
- Material: High-strength, corrosion-resistant steel alloy
- Finish: Anti-corrosion surface treatment for extended lifespan
- Compatibility: Designed for various Cummins engine assemblies (verify ESN for exact match)
⭐ Key Benefits
- Strong Grip: Maintains a secure connection, reducing the risk of loosening.
- Durable Construction: Withstands heavy torque and vibration without deformation.
- Corrosion Resistance: Protective coating extends service life in harsh conditions.
- Precision Fit: Matches Cummins tolerances for quick and accurate installation.
⚙️ Technical Advantages
The Cummins Heavy Hexagon Jam Nut S274-20 is engineered with high-strength steel for exceptional load-bearing capacity. In addition, its heavy hexagon design offers more contact surface for better wrench grip and higher torque application. Moreover, the anti-corrosion treatment helps it resist rust and wear, which is especially important for long-term engine performance. Because it is a genuine Cummins part, it ensures exact compatibility and prevents failures caused by substandard replacements.
🛠 Common Applications
You will find this jam nut used across multiple Cummins engines for heavy-duty trucks, buses, generators, marine vessels, and construction equipment. It is commonly paired with bolts and studs in engine mounts, brackets, and high-vibration areas. Furthermore, technicians often use it in maintenance or rebuilds to guarantee stable fastening and operational safety.
📦 Availability and Ordering
We stock the Cummins Heavy Hexagon Jam Nut S274-20 for immediate shipment worldwide. Therefore, you can reduce downtime by ordering it whenever needed. Always confirm your engine serial number (ESN) and part number before purchase to ensure compatibility. By choosing genuine CCEC parts, you secure optimal performance, longer service life, and the peace of mind that comes from OEM reliability.
