A
Anonymous
Mar 06, 2026
Rating: 5/5
Fast shipping
Needed these urgently for a repair job. Arrived quickly and the M6 size fit perfectly.
Description
Grade 8 galvanized hex flange nut GB6177 with anti-slip serrated locking design, available in 3mm, 4mm, M5 medium, 6mm face, 10mm fine thread, and 12mm sizes
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Carbon Steel |
| Surface Finish | Zinc Plated |
| Standard | GB6177 |
| Strength Grade | Class 8 |
| Thread Type | Metric Coarse |
| Flange Design | Serrated Lock |
| Head Style | Hex Flange |
| Available Sizes | M3, M4, M5, M6, M10, M12 |
| Package Quantity | 100 Pieces per Box |
| Approximate Weight | 0.5 kg per Pack |
5 reviews
A
Anonymous
Mar 05, 2026
Rating: 5/5
Excellent locking power
The serrations grip tightly onto the surface. Used them for an automotive project and nothing has loosened up yet.
A
Anonymous
Mar 02, 2026
Rating: 4/5
Good but tight
Threads are precise but require a bit more torque than expected. Still a solid product for the price.
A
Anonymous
Feb 17, 2026
Rating: 5/5
Corrosion resistant
Zinc plating holds up well in my workshop environment. No signs of rust after a few months of use.
A
Anonymous
Jan 24, 2026
Rating: 5/5
Great for machinery
Used these on assembly line equipment. The zinc plating looks uniform and provides good corrosion resistance.
5 FAQ
Q: Is this stainless steel?
A: No, this is carbon steel with a zinc plating finish for corrosion resistance.
Q: Are these certified?
A: They meet GB6177 standards which are comparable to DIN6923 specifications.
Q: Do you sell M8 size?
A: Currently available in M3, M4, M5, M6, M10, and M12. Please check back for M8 stock updates.
Q: Can I reuse these nuts?
A: Reuse is not recommended as the serrated teeth may lose their locking effectiveness after removal.
Q: What wrench size for M6?
A: A 10mm socket or wrench is standard for the M6 hex flange nuts.
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