Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Carbon Steel |
| Strength Grade | 8.8 |
| Standard | GB/T 56 |
| Available Sizes | M16, M18, M20, M22, M24, M27, M30, M36, M42, M48 |
| Surface Finish | Zinc Plated |
| Thread Type | Metric Coarse |
| Shape | Hexagonal Thick Nut |
| Application | Industrial Machinery, Construction, Heavy Equipment |
| Hardness | HRC 22-32 |
| Package Quantity | 10 Pieces per Pack |
Anonymous
Mar 31, 2026
Rating: 5/5
Excellent Heavy Duty Nuts
These thick nuts are exactly what I needed for my structural project. The 8.8 grade holds torque well and the zinc plating looks durable.
Anonymous
Mar 15, 2026
Rating: 5/5
Industrial Quality
Using these for machinery maintenance. The extra thickness provides better engagement which is critical for high vibration environments.
Anonymous
Mar 11, 2026
Rating: 5/5
Perfect Fit
Ordered M24 size. Threads matched perfectly with my bolts. Very satisfied with the quality and the extra thickness provides great security.
Anonymous
Feb 17, 2026
Rating: 4/5
Good Value
Solid nuts for the price. Shipping packaging could be better but the product is undamaged and meets the GB56 standard as described.
Anonymous
Feb 12, 2026
Rating: 5/5
Reliable Fasteners
Fast delivery and genuine GB56 standard. Will order again for future projects. The M30 size was exactly what I needed.
Q: Do you ship internationally?
A: Yes, we ship worldwide via standard logistics partners. Shipping costs vary by location.
Q: Can these be used with grade 10.9 bolts?
A: Yes, 8.8 nuts are generally compatible with 8.8 and 10.9 bolts for most standard applications.
Q: What is the height of the M20 nut?
A: The height varies by size, for M20 it is approximately 32mm based on GB56 standards.
Q: Is there a certificate of analysis available?
A: Yes, we can provide mill certificates for bulk orders upon request via customer service.
Q: Are these sold individually or in packs?
A: They are sold in packs of 10 pieces per size option selected at checkout.
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