Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	Carbon Steel
Strength Grade	8.8
Thread Type	Metric Coarse
Surface Finish	Zinc Plated
Alternative Finish	Black Oxide
Manufacturing Standard	GB6170
Size Range	M5 to M27
Hardness	22-32 HRC
Package Weight	Varies by Quantity
Country of Origin	Mainland China

5 reviews

Anonymous

Apr 06, 2026

Rating: 5/5

Great Quality

Strong steel, no stripping during tightening. The zinc plating looks uniform across all units.

Anonymous

Mar 30, 2026

Rating: 5/5

Reliable

Standard industrial quality as described. Will order again when we run out of stock.

Anonymous

Mar 04, 2026

Rating: 5/5

Bulk Order OK

Consistent quality across 1000 units. We use these for general assembly and have had no failures.

Anonymous

Feb 05, 2026

Rating: 5/5

Perfect Fit

Threads aligned perfectly with my bolts. Used them for a machinery repair project and they held torque well.

Anonymous

Jan 27, 2026

Rating: 4/5

Good Value

Slightly slower delivery but product is good. Prices are competitive compared to local hardware stores.

5 FAQ

Q: Do you have M30 size available?

A: Currently we stock up to M27. Please contact us for custom larger size inquiries.

Q: Is the black oxide finish durable?

A: It provides corrosion resistance and a specific look, but zinc is generally better for rust protection.

Q: Can I use these outdoors?

A: Zinc plated offers mild corrosion resistance but is best for indoor use. Consider stainless steel for outdoors.

Q: Are these metric or imperial sizes?

A: These are metric standard nuts ranging from M5 to M27.

Q: What torque should I use for M10?

A: Please consult a Grade 8.8 torque chart for specific values based on your application.

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