Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	Alloy Steel
Strength Class	12.9
Thread Coverage	Fully Threaded
Head Style	Hex Head
Surface Treatment	Black Oxide
Min Tensile Strength	1220 MPa
Min Yield Strength	1100 MPa
Drive Type	External Hex
Standard Compliance	ISO 898-1
Available Sizes	M5, M6, M8, M10, M12, M14, M16, M20

5 reviews

Anonymous

Apr 07, 2026

Rating: 5/5

Highly Durable

Excellent alloy steel quality. Will definitely order more for future projects.

Anonymous

Apr 06, 2026

Rating: 5/5

Precise Threading

Threads matched perfectly with my nuts. No cross-threading issues during assembly.

Anonymous

Mar 01, 2026

Rating: 5/5

Top Notch Quality

These bolts handled high stress without any deformation. Very satisfied with the tensile strength.

Anonymous

Feb 24, 2026

Rating: 4/5

Solid Hardware

Great bolts for the price. One bolt had a minor finish imperfection but functionally sound.

Anonymous

Feb 18, 2026

Rating: 5/5

Perfect for Machinery

Used these on a hydraulic press frame. They hold torque very well.

5 FAQ

Q: What is the hardness rating?

A: These Grade 12.9 bolts typically have a hardness between 39 and 44 HRC.

Q: Can these be used outdoors?

A: They have a basic black oxide coating. For harsh outdoor environments, additional corrosion protection is advised.

Q: Is certification available for batch testing?

A: Mill certificates can be provided for large industrial orders upon request before shipment.

Q: Do you offer metric washers separately?

A: Yes, please search our store for hardened steel washers compatible with Grade 12.9 fasteners.

Q: Are these sold individually or in packs?

A: Pricing varies by size, but they are generally sold in packs of 10, 50, or 100 units.

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