






🔩 Lock in strength, torque, and trust with every turn!
The ANSIEDIO M12 Hex Bolt is a set of three fully threaded, 12.9 grade high tensile alloy steel bolts, sized M12×40mm with an outer hex head. Engineered for industrial and machinery applications, these bolts provide exceptional strength and precision fit, making them ideal for demanding construction, automotive, and DIY projects.








| ASIN | B08TW5FBTZ |
| Best Sellers Rank | 152,989 in DIY & Tools ( See Top 100 in DIY & Tools ) 577 in Hex Bolts |
| Brand Name | ANSIEDIO |
| Country Of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 61 Reviews |
| Exterior Finish | Black |
| Exterior finish | Black |
| Fastener Type | Hexagon Bolt |
| Fastener type | Hexagon Bolt |
| Grade Rating | 12.9 |
| Head Type | Hex |
| Head style | Hex |
| Item Hardness | 12.9 grade |
| Manufacturer | ANSIEDIO |
| Manufacturer Grade | 12.9 |
| Manufacturer grade | 12.9 |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Metal | Alloy Steel |
| Number of Pieces | 3 |
| Screw Head Style | Hex |
| Size | (Fully Threaded) M12×40mm,3 pcs |
| Thread Class | 3A |
| Thread Size | M12 |
| Thread Style | Right Hand |
| Thread Type | fully threaded |
| Thread size | M12 |
| Unit Count | 3.0 count |
T**S
M12 Bolt
If anyone looking for tread pitch on M12 bolt is 1.75 bolt itself is great 10/10 but not good for what i intended
R**.
Used on BMW to replace rear toe arms bolts
On E90 toe arm bolt snapped, have to drill out original 10.9 bolt out and as thread was damaged I have to set bolt and nut setup. So decided for this 12.9 bolt and A2 nut, so far it holds well.
C**T
Bolt
As ordered. Does the job well
J**E
Bolt
Good quality, fast delivery
M**N
Good quality
Exactly as described
M**.
Bad
They advertise set screws as bolts, it's as if they don't know the difference
L**P
Strength and more strength!
Exactly what is expected of a 12.9 grade high-tensile bolt. However do remember that these do end up with surface rust, just a limitation of the design, stainless can't match the strength of these, so what you do is oil up the exposed parts or just coat with a thin layer of RTV to help keep that pesky rust at bay. They were a bit pricey, but I needed them in a pinch and sometimes that comes at a pinch to the wallet too, just life.
D**E
Exactly what I needed
I took the measurements before I ordered and these were exactly what I needed
Trustpilot
2 months ago
3 days ago