Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	Alloy Steel 40Cr
Strength Grade	12.9
Surface Finish	Black Oxide Coated
Thread Standard	Metric ISO Coarse
Available Sizes	M8, M10, M12, M14, M16, M20
Hardness	HRC 39-44
Tensile Strength	1220 MPa Minimum
Yield Strength	1100 MPa Minimum
Package Weight	1.5 kg per Box
Country of Origin	China

5 reviews

Anonymous

Apr 10, 2026

Rating: 5/5

Exact specifications

Met all ISO standards required for our machinery. Will order again.

Anonymous

Apr 03, 2026

Rating: 5/5

Strong and durable

No deformation under load. The integrated washer saves time during assembly.

Anonymous

Feb 26, 2026

Rating: 4/5

Good value

Solid nuts overall. Slightly difficult to thread initially but seated well after.

Anonymous

Feb 23, 2026

Rating: 5/5

Fast shipping

Product arrived well packaged and protected from rust. Excellent quality.

Anonymous

Feb 06, 2026

Rating: 5/5

Great for clamping

Used these for mold plates and they held up perfectly under high torque. No stripping observed.

5 FAQ

Q: Do you offer bulk discounts for 500 units?

A: Yes, please contact our sales team directly for volume pricing.

Q: Can I get a material certificate with this order?

A: Mill test certificates are available upon request at checkout.

Q: Is size M24 available in this series?

A: Currently, this listing supports sizes up to M20 only.

Q: What is the recommended torque for M12 size?

A: Please refer to the ISO 898-2 standard chart for Grade 12.9 specifics.

Q: Are these rust resistant for outdoor use?

A: Black oxide offers limited protection. We recommend oiling for outdoor environments.

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