Description
Black socket head cap screw made of 12.9 alloy steel to DIN 912, the cylindrical head with hex socket allows high tightening torque in confined spaces, a standard fastener for moulds, jigs and precision machinery.
Grade 12.9 alloy steel provides maximum tensile strength among common screws; low cylindrical head fits flush in narrow recesses; deep hex socket resists cam-out under high torque; black oxide finish with protective oil film for anti-rust storage.
| Parameter | Value |
|---|---|
| Material | Alloy steel |
| Grade | 12.9; 10.9 |
| Surface | Black oxide |
| Size Range | M3 - M24 |
| Drive | Hex socket |
| Packing | Bulk; box; custom |
Faq
We are a professional manufacturer of fasteners, integrating production, R&D and export. We welcome customers to visit our factory.
Yes. We can produce custom bolts, nuts and non-standard parts according to your drawings, samples or technical requirements.
We supply carbon steel, stainless steel, alloy steel, nylon and other materials. Surface treatments such as zinc plating, hot-dip galvanizing are available.
For standard fasteners, small trial orders are acceptable. For customized non-standard products, MOQ depends on the production process.
Standard items usually take 7–15 days. Custom products will be confirmed based on drawings and order quantity.
Yes. We can offer material test certificates, dimension inspection reports and related documents to meet international standards.
We support T/T, L/C and other negotiable payment terms for international business.
Your request, our direction. We aim to bring you all the natural & healthy product,make happy life to the people in the world.
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