Stainless Steel 304 Square Nut DIN 557 Plain Finish A2-70 Metric Nuts

Description

The stainless steel 304 square nut (DIN 557, A2-70, plain finish) is widely used in structural, mechanical, and assembly applications due to their excellent grip, stability, and corrosion resistance. These four-sided nuts provide greater surface contact than hex nuts, improving resistance against loosening and making them ideal for use with channel systems, wood, and metal components. Ever Hardware provides custom made fasteners and customizable packaging.

1. Enhanced Grip and Stability
• The square shape offers better tool engagement and reduces the risk of rounding off compared to hex nuts.
• It provides a larger surface contact area, increasing friction and making it less prone to loosening under vibration.
• Ideal for T-slot and channel applications, where a firm hold is required.

2. Excellent Corrosion Resistance
• Made from A2-70 stainless steel (304), these nuts have superior resistance to rust, oxidation, and moisture, making them suitable for outdoor, marine, and industrial environments.
• They perform well in humid, chemical, and mildly acidic conditions compared to standard carbon steel nuts.

3. Strong and Durable Construction
• With an A2-70 strength rating, these nuts offer high tensile strength, ensuring secure fastening in load-bearing applications.
• Resistant to wear and deformation, providing long-lasting reliability in demanding conditions.

4. Secure Fastening with Square Bolts & Washers
• Designed for use with square-head bolts and flat washers, improving overall fastening security.
• The flat sides provide additional locking strength, preventing rotation and loosening over time.

5. Ideal for Wood and Metal Applications
• Square nuts are commonly used in woodworking, railways, and construction due to their large surface area, which prevents them from pulling through soft materials.
• Suitable for metal framing systems, offering firm locking in slotted structures.

6. Easy Manual Handling
• The larger flat surfaces make them easier to grip and tighten by hand or with standard wrenches.
• Useful in applications where automated tools may not be available, such as fieldwork or restoration projects.

7. Plain Finish for Versatile Applications
• The plain (uncoated) finish maintains the natural anti-corrosion properties of stainless steel without additional coatings.
• Suitable for cleanroom, food-grade, and medical applications where contamination risks must be minimized.

8. Compliance with DIN 557 Standards
• Manufactured according to DIN 557, ensuring precise dimensions, compatibility with metric bolts, and standardized performance in industrial settings.

Conclusion

Stainless steel 304 square nut (DIN 557, A2-70, plain finish) provides strong, stable, and corrosion-resistant fastening for structural, mechanical, and wood applications. Their larger surface area, durable stainless steel construction, and anti-loosening properties make them ideal for construction, rail, furniture, and industrial assemblies, ensuring long-term reliability in harsh environments.