Anonymous
Apr 19, 2026
Rating: 5/5
Excellent hardness
These bolts held up under high torque without stripping. Perfect for my machinery repair project.
Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Alloy Steel |
| Strength Grade | 12.9 |
| Head Style | Cylindrical Head |
| Drive Type | Hex Socket |
| Surface Finish | Black Oxide |
| Thread Type | Metric Coarse |
| Package Quantity | 120 Pieces |
| Compliance Standard | DIN 912 / ISO 4762 |
| Min Tensile Strength | 1220 MPa |
| Country of Origin | Imported |
Anonymous
Apr 19, 2026
Rating: 5/5
Excellent hardness
These bolts held up under high torque without stripping. Perfect for my machinery repair project.
Anonymous
Apr 05, 2026
Rating: 4/5
Good value
Solid set for the price. Packaging was secure and all sizes were labeled clearly.
Anonymous
Mar 16, 2026
Rating: 4/5
Mostly accurate
One size was slightly off but customer service resolved it quickly. Good strength overall.
Anonymous
Mar 08, 2026
Rating: 5/5
Fast delivery
Arrived earlier than expected. Tax invoice was included as described.
Anonymous
Feb 24, 2026
Rating: 5/5
Professional quality
Using these for automotive assembly. No issues so far and the black oxide finish looks great.
Q: Is the thread type metric or UNC?
A: All screws in this set feature Metric coarse threads.
Q: Can I use these in high vibration environments?
A: Yes, Grade 12.9 is suitable for high stress, but we recommend using thread locker.
Q: Are nuts and washers included in the set?
A: Yes, the set includes matching nuts and washers for each screw size.
Q: Does this come with a tax invoice?
A: Yes, a tax invoice is automatically included with your shipment.
Q: What is the hardness rating?
A: These are Grade 12.9 with a hardness of approximately 39-44 HRC.