A
Anonymous
Apr 15, 2026
Rating: 5/5
Great for machinery
Grade 12.9 is exactly what I needed for my CNC project. Highly recommend.
Description
Washers spring washers screws nuts bolts studs pins complete set
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Alloy Steel |
| Strength Grade | 12.9 |
| Head Style | Socket Head Cap |
| Drive Type | Hex Socket |
| Point Type | Raised Point |
| Surface Finish | Black Oxide |
| Thread Standard | Metric Coarse |
| Available Sizes | M4, M5, M6, M8, M10 |
| Tensile Strength | 1220 MPa |
| Package Quantity | 100 Pieces per Box |
5 reviews
A
Anonymous
Mar 24, 2026
Rating: 4/5
Good value
Solid fasteners for the price. Delivery was quick though one box was slightly crushed.
A
Anonymous
Mar 10, 2026
Rating: 5/5
Reliable supplier
Jinchao brand is consistent. The raised point helps with alignment during installation.
A
Anonymous
Mar 04, 2026
Rating: 5/5
High quality steel
These screws are very strong. Used them for a high-tension application and they held up perfectly.
A
Anonymous
Jan 29, 2026
Rating: 5/5
Precise threading
No issues with cross-threading. The M5 size fit my assembly exactly as expected.
5 FAQ
Q: Are these corrosion resistant?
A: They have a black oxide finish which offers mild corrosion resistance. For harsh environments, additional coating is advised.
Q: Can I mix sizes in one order?
A: Yes, you can select different sizes from the dropdown menu and add them separately to your cart.
Q: Is the head height standard DIN 912?
A: Yes, these dimensions comply with DIN 912 standards for socket head cap screws.
Q: Do you sell matching nuts?
A: Yes, please search our store for Grade 12.9 hex nuts compatible with metric threads.
Q: What hex key size is needed for M8?
A: For M8 socket head cap screws, a 6mm hex key is typically required.
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