Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Alloy Steel |
| Strength Grade | 12.9 |
| Head Style | Countersunk Flat Head |
| Drive Type | Hex Socket (Allen) |
| Thread Type | Metric Coarse |
| Surface Finish | Black Oxide |
| Standard | DIN 7991 |
| Available Sizes | M3, M4, M5, M6, M8, M10, M20 |
| Hardness | 39-44 HRC |
| Package Quantity | Varies by Selection |
Anonymous
Apr 17, 2026
Rating: 5/5
Excellent Strength
Used these for high tension assembly on my CNC machine. No stripping and they held torque perfectly.
Anonymous
Apr 16, 2026
Rating: 5/5
High Quality
True 12.9 grade, tested with hardness kit. Very satisfied with the material quality.
Anonymous
Apr 02, 2026
Rating: 5/5
Fast Delivery
Arrived next day. Exactly what I needed for my automotive project. Will order again.
Anonymous
Mar 23, 2026
Rating: 5/5
Perfect Fit
Threads are clean and precise. M6 size fit exactly as expected without any cross-threading issues.
Anonymous
Mar 21, 2026
Rating: 4/5
Good Value
Great bolts for the price. Packaging could be better to prevent scratching during shipping.
Q: Is this stainless steel?
A: No, this is alloy steel designed for high strength applications.
Q: Are these plated for rust resistance?
A: Yes, they feature a black oxide finish for mild corrosion protection.
Q: What key size is needed for M5?
A: You will typically need a 4mm Allen key for M5 screws.
Q: Do you sell M12 size?
A: Currently we stock up to M10 and M20. M12 is not available at this time.
Q: Is there a bulk discount available?
A: Yes, please contact support for orders exceeding 500 units.
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