Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Carbon Steel |
| Strength Grade | 8.8 |
| Finish | Black Oxide |
| Standard | GB/T 70.1 |
| Head Type | Socket Head Cap |
| Drive Style | Hex Socket |
| Thread Pitch | Metric Coarse |
| Size Range | M3 to M24 |
| Hardness | 250-320 HV |
| Packaging | Protective Plastic Box |
Anonymous
Apr 07, 2026
Rating: 5/5
Perfect fit
Ordered M6 and M8 sizes. They fit perfectly into standard metric taps. Very satisfied with the strength.
Anonymous
Mar 12, 2026
Rating: 4/5
Good but packaging could be better
The screws themselves are great Grade 8.8 quality. One box arrived slightly crushed but no damage to the contents.
Anonymous
Mar 04, 2026
Rating: 5/5
Fast delivery
Needed these urgently for a machine repair. Shipping was quick and the items were well organized by size.
Anonymous
Feb 20, 2026
Rating: 5/5
Standard compliance confirmed
Measured several samples with calipers. They meet GB70.1 specifications accurately. Will buy again.
Anonymous
Feb 01, 2026
Rating: 5/5
Excellent quality for the price
These screws are exactly what I needed for my CNC project. The threads are clean and the black oxide finish is uniform.
Q: Are these screws suitable for outdoor applications?
A: Black oxide provides some corrosion resistance, but for outdoor use, we recommend applying oil or using stainless steel alternatives.
Q: Do you offer bulk discounts for orders over 1000 pieces?
A: Yes, please contact our sales team directly for volume pricing on large quantity orders.
Q: What Allen key size is needed for M10?
A: For M10 Grade 8.8 socket head cap screws, a 8mm hex key is typically required.
Q: Can I return unused boxes if I order too many?
A: Yes, unopened packages can be returned within 30 days according to our return policy.
Q: Is there a certificate of material included?
A: Test reports are available upon request at checkout for quality assurance purposes.
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