Attributes

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

5 reviews

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.

5 FAQ

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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