A
Anonymous
Mar 29, 2026
Rating: 3/5
Mixed Experience
The screws are good quality but one size variant was out of stock in my shipment.
Description
These are full-thread socket head cap screws designed for high-strength mechanical fastening applications. Manufactured to Grade 12.9 standards, they feature an alloy steel construction with a black oxide finish to provide superior tensile strength and resistance to deformation under heavy loads. The hexagonal socket drive allows for high torque application in confined spaces where external wrench access is limited. Available in metric sizes ranging from M3 to M20, this listing corresponds to the specific diameter and length selected at purchase. Ensure proper torque settings are used during installation to maximize clamping force without stripping the internal socket.
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Alloy Steel |
| Strength Grade | 12.9 |
| Thread Style | Full Thread |
| Head Type | Socket Head Cap |
| Drive Type | Hex Socket |
| Surface Finish | Black Oxide |
| Standard Compliance | DIN 912 / ISO 4762 |
| Min Tensile Strength | 1220 MPa |
| Hardness | 39-44 HRC |
| Package Type | Plastic Storage Case |
5 reviews
A
Anonymous
Mar 06, 2026
Rating: 5/5
Exact Specifications
Measured and confirmed grade 12.9 specs. Great for precision machinery applications.
A
Anonymous
Mar 05, 2026
Rating: 4/5
Good Product
Works well for general mechanical use. Delivery was slightly slower than expected but item is good.
A
Anonymous
Feb 26, 2026
Rating: 5/5
Professional Quality
Using in automotive repair. These hold up well under stress compared to standard hardware.
A
Anonymous
Feb 21, 2026
Rating: 5/5
Superior Strength
Used for high tension assembly in my workshop. The hardness is consistent and they fit perfectly.
5 FAQ
Q: Are keys included?
A: No, hex keys are sold separately. Please check our tools section for compatible sizes.
Q: Is this metric thread?
A: Yes, all sizes listed for this product are standard metric threads.
Q: Is this corrosion resistant?
A: Black oxide offers limited protection against rust. For high corrosion environments, consider stainless steel.
Q: Do you provide invoices?
A: Yes, a tax invoice is available as mentioned in the product description.
Q: What sizes are available?
A: We stock sizes ranging from M3 to M20. Please select your specific size from the variant options.
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