Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Alloy Steel |
| Strength Grade | 12.9 |
| Drive Type | Hex Socket |
| Point Style | Pointed |
| Head Style | Headless (Grub) |
| Surface Finish | Black Oxide |
| Thread Standard | Metric ISO |
| Hardness | 39-44 HRC |
| Package Quantity | 100 Pieces |
| Country of Origin | Imported |
Anonymous
Apr 21, 2026
Rating: 5/5
Excellent Hardness
Used these for securing pulleys on a motor shaft. The 12.9 grade held up under high torque without stripping.
Anonymous
Apr 11, 2026
Rating: 5/5
High Tensile Strength
No deformation under load. These are genuine Grade 12.9 screws, ideal for industrial applications.
Anonymous
Mar 08, 2026
Rating: 5/5
Great Quality
Threads are precise and fit perfectly into tapped holes. The black oxide finish looks professional too.
Anonymous
Feb 11, 2026
Rating: 4/5
Good but Tight
Very strong screws. Needed a high quality hex key to drive them without rounding the socket, but otherwise solid.
Anonymous
Jan 29, 2026
Rating: 5/5
Exactly as Described
Ordered the M6 size for a machinery repair. They arrived quickly and matched the specifications perfectly.
Q: What is the thread pitch for the M6 size?
A: The standard coarse thread pitch for M6 is 1.0mm.
Q: Are these screws made of stainless steel?
A: No, these are made from alloy steel with a black oxide finish for high strength.
Q: Can these be used in outdoor applications?
A: The black oxide offers mild corrosion resistance, but we recommend oiling them for outdoor use.
Q: What hex key size is required for the M10 screw?
A: Typically, an 8mm hex key is required for the M10 hex socket set screw.
Q: Do you offer bulk pricing for over 500 units?
A: Yes, please contact our sales team directly for bulk order discounts.
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