Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	Alloy Steel
Strength Grade	12.9
Head Style	Hex Socket
Drive Type	Internal Hex
Thread Size	M5, M6, M8, M10, M12, M13, M16, M20
Surface Finish	Black Oxide
Shank Design	Equal-Length Shoulder
Standard Compliance	DIN 912 / ISO 4762
Hardness Rating	39-44 HRC
Packaging	Bulk Box

5 reviews

Anonymous

Apr 06, 2026

Rating: 5/5

Fast Delivery

Needed M10 shoulder bolts urgently. Arrived on time and well packaged to prevent rust.

Anonymous

Mar 30, 2026

Rating: 4/5

Good Bulk Pack

Solid screws. One had a slightly stripped socket but the rest were fine for the price.

Anonymous

Mar 26, 2026

Rating: 5/5

High Tensile Strength

Perfect for my CNC project. The 12.9 grade holds up well under tension without stripping.

Anonymous

Mar 08, 2026

Rating: 5/5

Professional Grade

Using these for automotive assembly. No issues with shearing under high torque settings.

Anonymous

Feb 14, 2026

Rating: 5/5

Precise Dimensions

Measured the M8 bolts and they are spot on. Great quality control on the shoulder length.

5 FAQ

Q: Is the thread pitch standard coarse?

A: Yes, these feature standard metric coarse threading.

Q: What hex key size is needed for M10?

A: Typically an 8mm hex key is required for M10 socket heads.

Q: Are these suitable for outdoor use?

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

Q: Can these be welded?

A: Welding high-strength steel may alter hardness. Consult a specialist before welding.

Q: Do you offer mill certificates?

A: Yes, contact support before ordering for certification details.

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