A
Anonymous
Apr 19, 2026
Rating: 5/5
Fast Delivery
Arrived quickly and well organized. Perfect for my workshop needs.
Description
High strength, durable, corrosion-resistant, and wear-resistant. Next-day delivery available in Jiangsu, Zhejiang, Shanghai, and Guangdong.
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Alloy Steel |
| Strength Grade | 12.9 |
| Surface Finish | Black Oxide |
| Drive Type | Hex Socket |
| Point Styles | Cup, Cone, Flat |
| Thread Standard | Metric Coarse |
| Sizes Included | M2, M3, M4, M8 |
| Hardness | 39-44 HRC |
| Tensile Strength | 1220 MPa Min |
| Package Type | Plastic Assortment Box |
5 reviews
A
Anonymous
Apr 02, 2026
Rating: 4/5
Good Value
Quality is good but I wished M5 was included in this specific kit. Otherwise solid.
A
Anonymous
Mar 24, 2026
Rating: 5/5
Great Variety Pack
Having the different points is useful for various locking needs. Good organization.
A
Anonymous
Feb 26, 2026
Rating: 5/5
Professional Grade
We use these for machinery assembly. Consistent quality across the batch.
A
Anonymous
Feb 10, 2026
Rating: 5/5
Excellent Hardness
These hold up well under high torque applications. No stripping on the hex socket.
5 FAQ
Q: Is an Allen key included?
A: No, this kit contains screws only. Please use your own metric hex keys.
Q: Are these sold individually?
A: No, this listing is for the assortment kit containing multiple sizes and points.
Q: Can I use these on aluminum?
A: Yes, but be careful with torque to avoid stripping the aluminum threads.
Q: What is the thread pitch?
A: These feature standard metric coarse pitch threads suitable for general use.
Q: Are these corrosion resistant?
A: Black oxide offers mild protection against rust, but they are not stainless steel.
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