Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material Composition | 304 Stainless Steel |
| Finish Color | Black |
| Head Configuration | Smooth Cup Head |
| Drive Mechanism | Hex Socket (Allen) |
| Thread Standard | Metric Coarse |
| Size Range | M2, M3, M4, M5, M6, M8 |
| Surface Texture | Non-Knurled Smooth |
| Hardness Level | HRC 25-30 |
| Corrosion Resistance | High (Indoor/Outdoor) |
| Package Format | Assorted Kit Box |
Anonymous
Apr 20, 2026
Rating: 5/5
Fast delivery and organized
Came well packaged and organized by size. Made finding the right screw very easy during my build.
Anonymous
Apr 16, 2026
Rating: 5/5
Perfect fit for CNC assembly
Used these for my CNC machine assembly. The hex socket fits perfectly without stripping. The black finish looks professional.
Anonymous
Feb 13, 2026
Rating: 5/5
Nice black coat
Looks professional on my project. The coating seems durable and hasn't chipped during installation.
Anonymous
Feb 12, 2026
Rating: 4/5
Good strength overall
Good strength for the price. One bolt head was slightly rounded but the rest were perfect. Would buy again.
Anonymous
Jan 24, 2026
Rating: 5/5
Reliable fasteners
No stripping during installation. The stainless steel quality feels solid and the black oxide finish is even.
Q: Do you stock these in M10 size?
A: Currently, this listing only supports sizes up to M8. Please check our other listings for larger sizes.
Q: Are these bolts fully threaded?
A: Yes, these specific cup head screws are fully threaded along the shank.
Q: Is the black coating safe for general use?
A: Yes, the black oxide finish is safe for general mechanical and industrial applications.
Q: What hex key size is needed for the M4 screws?
A: Typically, a 2.5mm hex key is required for M4 cup head socket screws.
Q: Can I use these for outdoor projects?
A: Yes, 304 stainless steel offers good corrosion resistance for most outdoor environments.
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