Description
Reviews
| 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 |
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.
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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