Non Serrated Flange Lock Nut Grade G Black Phosphate

Overview: Non Serrated Flange Nuts

• BoltCraft’s Grade G flange nuts feature an innovative design with a non serrated flange that expands the bearing surface, along with a crimped top lock design that provides a more stable and secure fastening solution. 
• These nuts are commonly used in high-performance assemblies where hex flange design strength is a key requirement. For assistance with availability or specs, feel free to contact customer service.

Applications & Advantages

• Ideal for applications that require a high torque resistance, these non serrated flange nuts help the nut stay secure even under heavy vibrations. The flange design allows for the clamping load to be spread more evenly, reducing damage to the surface while increasing reliability.
• The smooth bearing surface of the non serrated flange means it won’t mar finishes, unlike serrated flange options.

Material & Specifications: Non Serrated Flange Nuts

• Manufactured from high-tensile carbon steel, these hex nuts meet strict chemical and mechanical standards, offering consistency and long-term performance. The phosphate treatment helps resist oxidation and wear over time.

Hardness & Durability

• Engineered for optimal hardness, each non serrated flange nut follows Rockwell guidelines based on size. This helps the nut handle high torque levels without cracking or stripping.
• Combined with the durability of carbon steel, these flange nuts can support dynamic load-bearing uses without failure. Our product updates include better finish adhesion and dimensional stability across batches.

Proof Load & Finish: Non Serrated Flange Nuts

• These nuts are tested to meet industry-standard proof loads, and the black phosphate finish is engineered for both performance and appearance. 
• From OEMs to maintenance crews, many customers sign off on this option when looking for a heavy duty locking nut. If you’re unsure what fits your project best, our customer service team is here to provide information on sizes, stock status, or how to add this product to your next purchase.