China Hexagon Socket Head Cap Bolt DIN 912 - Quality Fasteners from Reliable Suppliers and Factory
| Product name | Hexagonal socket screw |
| Size | M6 / M8 / M10 / M12 |
| Grade | 4.8 / 8.8 / 10.9 / 12.9 |
| Material | Steel / Stainless Steel |
| Surface treatment | YZP |
| Standard | DIN / ISO |
| Certificate | ISO 9001 |
| Sample | Free Samples |
Definition: An internal hexagonal screw is a fastener with a hexagonal groove (internal hexagonal hole) on the head, which requires the use of an Allen Key or a hexagonal screwdriver head matched with an electric tool for installation and removal.
Head types: Common cylindrical heads (such as ISO 4762/DIN 912), countersunk heads (such as DIN 7991), flat heads, etc., suitable for different installation requirements (such as countersunk heads used in scenarios where flush surfaces are required).
Thread type: Full thread or half thread, with various materials and surface treatments.
Common materials:
High strength, used in machinery and automobiles.
Corrosion-resistant, suitable for outdoor and medical equipment.
Lightweight, high corrosion resistance, used in aerospace.
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Industrial Field: Machine tools, molds, automation equipment — high-strength connections that require frequent disassembly.
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Automotive / Aviation: Engine components, chassis — high temperature resistance and vibration resistance.
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Consumer Electronics: Laptops, cameras — precision small-sized screws such as M1.6.
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Furniture / Bicycle: IKEA furniture assembly, bicycle brake system — countersunk anti-scratch design.
• The wrench should be fully inserted into the bottom of the hole to avoid sliding teeth caused by oblique force.
• When pre drilling, countersunk screws need to match the taper (such as 90°).
• Regularly check the torque (using a torque wrench) to prevent over tightening or loosening.
