Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	Carbon Steel
Strength Class	8.8
Head Type	Cylinder Head
Drive Style	Internal Hex
Thread Standard	Metric Coarse
Surface Finish	Black Oxide
Compliance Standard	DIN 912
Available Sizes	M4 to M20
Package Contents	Assorted Kit
Country of Origin	China

5 reviews

Anonymous

Apr 04, 2026

Rating: 5/5

Quick Shipping

Packaged securely in a sturdy box. No rust or damage upon arrival.

Anonymous

Feb 17, 2026

Rating: 5/5

Solid Construction

Great for general mechanical assembly. The heads did not strip under torque.

Anonymous

Feb 15, 2026

Rating: 5/5

Reliable Fasteners

No stripping during installation. Used them on a high vibration motor mount.

Anonymous

Jan 31, 2026

Rating: 5/5

True to Size

Dimensions match the spec sheet perfectly. Very satisfied with the precision.

Anonymous

Jan 29, 2026

Rating: 4/5

Good Value

Quality is good for the price point. Shipping was slightly delayed but product is fine.

5 FAQ

Q: Do you sell matching nuts?

A: Yes, please check our related products section for compatible hex nuts.

Q: Is this suitable for outdoor use?

A: Black oxide offers mild resistance. We recommend additional coating for harsh environments.

Q: What key size for M8?

A: A 6mm hex key is required for M8 socket head cap screws.

Q: Can I return opened packages?

A: Please review our return policy details on the checkout page for specifics.

Q: What is the hardness rating?

A: Typically 22-32 HRC for Grade 8.8 carbon steel fasteners.

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