A
Anonymous
Mar 08, 2026
Rating: 5/5
Very Strong
Perfect for high tension applications. No stripping.
Description
This is a high-strength flange nut designed for secure fastening in heavy-duty mechanical and structural applications where vibration resistance is critical. Constructed from alloy steel and heat-treated to achieve Grade 12.9 hardness, it features an integrated circular flange that acts as a built-in washer to distribute load evenly and prevent surface damage without requiring separate components. The hexagonal top allows for standard tool engagement, while the serrated underside of the flange bites into the mating surface to lock the nut in place and resist loosening under dynamic stress. This specific listing covers individual nuts available in metric thread sizes ranging from M8 to M30, with each unit corresponding to the single diameter selected at purchase. For optimal performance and to maintain the rated tensile strength, ensure the nut is tightened to the specified torque value using calibrated tools and inspect threads for debris before installation.
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Alloy Steel |
| Strength Grade | 12.9 |
| Finish | Zinc Plated |
| Thread Type | Metric Coarse |
| Flange Style | Serrated |
| Hardness | 39-44 HRC |
| Sizes Available | M8, M10, M12, M14, M16, M20, M22, M24, M30 |
| Package Quantity | 10 Units |
| Standard Compliance | ISO 4161 |
| Application | Automotive, Industrial |
5 reviews
A
Anonymous
Mar 02, 2026
Rating: 5/5
Reliable Fasteners
Always buy these for critical connections. Highly recommend.
A
Anonymous
Feb 27, 2026
Rating: 5/5
Exactly What I Needed
Used for machinery repair. Holding up well under vibration.
A
Anonymous
Feb 18, 2026
Rating: 4/5
Good Product
Quality is good but delivery took a few extra days.
A
Anonymous
Jan 29, 2026
Rating: 5/5
Great Quality
Threads are clean and fit perfectly on my bolts.
5 FAQ
Q: What is the yield strength?
A: Grade 12.9 typically has a yield strength of 1100 MPa.
Q: Do you sell matching bolts?
A: Yes, please check our Grade 12.9 Bolt section.
Q: Are these suitable for outdoor exposure?
A: Zinc plating provides basic protection, but coating is recommended for harsh weather.
Q: Is the flange removable?
A: No, the flange is integrated into the nut design.
Q: Can I mix sizes in one order?
A: Yes, you can select different sizes during checkout.
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