Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	Alloy Steel
Strength Grade	12.9
Head Style	Socket Head Cap
Drive Type	Hex Socket
Point Type	Raised Point
Surface Finish	Black Oxide
Thread Standard	Metric Coarse
Available Sizes	M4, M5, M6, M8, M10
Tensile Strength	1220 MPa
Package Quantity	100 Pieces per Box

5 reviews

Anonymous

Apr 15, 2026

Rating: 5/5

Great for machinery

Grade 12.9 is exactly what I needed for my CNC project. Highly recommend.

Anonymous

Mar 24, 2026

Rating: 4/5

Good value

Solid fasteners for the price. Delivery was quick though one box was slightly crushed.

Anonymous

Mar 10, 2026

Rating: 5/5

Reliable supplier

Jinchao brand is consistent. The raised point helps with alignment during installation.

Anonymous

Mar 04, 2026

Rating: 5/5

High quality steel

These screws are very strong. Used them for a high-tension application and they held up perfectly.

Anonymous

Jan 29, 2026

Rating: 5/5

Precise threading

No issues with cross-threading. The M5 size fit my assembly exactly as expected.

5 FAQ

Q: Are these corrosion resistant?

A: They have a black oxide finish which offers mild corrosion resistance. For harsh environments, additional coating is advised.

Q: Can I mix sizes in one order?

A: Yes, you can select different sizes from the dropdown menu and add them separately to your cart.

Q: Is the head height standard DIN 912?

A: Yes, these dimensions comply with DIN 912 standards for socket head cap screws.

Q: Do you sell matching nuts?

A: Yes, please search our store for Grade 12.9 hex nuts compatible with metric threads.

Q: What hex key size is needed for M8?

A: For M8 socket head cap screws, a 6mm hex key is typically required.

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