Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	Alloy Steel
Strength Grade	12.9
Surface Finish	Black Oxide
Thread Type	Metric Coarse
Sizes Included	M6, M8, M10
Head Style	Hexagon
Hardness	HRC 39-44
Tensile Strength	1220 MPa
Package Weight	1.5 lbs
Warranty	1 Year Limited

5 reviews

Anonymous

Mar 24, 2026

Rating: 5/5

Strong and reliable

Needed high strength fasteners for a suspension bracket. These fit well and feel very durable compared to standard hardware.

Anonymous

Mar 15, 2026

Rating: 5/5

Exactly as described

Grade 12.9 is no joke, these are very hard. Make sure you use a quality hex key or socket to avoid rounding the heads.

Anonymous

Feb 28, 2026

Rating: 5/5

Perfect for engine work

Used these on my intake manifold rebuild. The 12.9 grade is legitimate and they held torque perfectly without stripping.

Anonymous

Jan 31, 2026

Rating: 4/5

Good value set

Quality is great, wish it had more M10 bolts in the kit, but overall a solid purchase for the price.

Anonymous

Jan 27, 2026

Rating: 5/5

Fast shipping

Arrived quickly and well organized in the box. The lock washers are a nice addition to the set.

5 FAQ

Q: What is the return policy if the size is wrong?

A: We offer a 30-day return policy for unused items in original packaging. Please contact support for a label.

Q: What is the thread pitch for the M8 bolts?

A: The M8 bolts feature a standard metric coarse thread pitch of 1.25mm.

Q: Do these come with lock washers?

A: Yes, the set includes matching lock washers for each bolt size included in the package.

Q: Are these compatible with Japanese vehicles?

A: Yes, since these are metric sizes (M6, M8, M10), they are compatible with most Japanese import vehicles.

Q: Are these bolts stainless steel?

A: No, these are made from alloy steel with a black oxide finish for high strength, not stainless steel.

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