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The 10.9 M2 Grade Black Socket Head Cap Screws feature precision-machined alloy steel construction with black oxide coating for superior corrosion resistance. Engineered to exacting ISO 4762 standards, these fasteners deliver exceptional tensile strength and vibration resistance in critical assemblies. The optimized head geometry and internal hex drive provide secure torque transmission for drone frames, RC models, industrial machinery, and applications requiring reliable high-strength connections.
| Parameter | Specification |
| Material | Alloy Steel (SCM435) |
| Strength Grade | 10.9 (ISO 898-1) |
| Head Types | Pan Head / Button Head |
| Drive Type | Hex Socket (Internal) |
| Size Range | M2 |
| Thread Pitch | Standard Metric Coarse |
| Surface Finish | Black Oxide (5-8μm) |
| Hardness | 32-39 HRC |
| Thread Length | Full or Partial (Customizable) |
| Torque Resistance | M2: 1.2 N·m (Min) |
• High-Strength Core: Quenched and tempered to 1040 MPa tensile strength
• Precision Drive: ISO 10664-compliant hex socket (zero-strip design)
• Corrosion Protection: Black oxide coating with supplementary oil seal
• Vibration Resistance: Prevailing torque locking feature (optional)
• Head Optimization: Low-profile pan head (0.7×D) and semi-round button head
• Batch Traceability: Laser-etched grade marking on every screw
| Size | Head Type | Proof Load (kN) | Tensile Strength (MPa) | Recommended Torque (N·m) |
| M2 | Pan | 4.8 | 1040 | 0.9 |
| M2 | Button | 4.6 | 1040 | 0.8 |
• Carbon fiber frame assembly (motor mounts, arm joints)
• Flight controller mounting in high-vibration environments
• Camera gimbal bracket fastening
• Battery tray securement
• CNC equipment enclosure panels
• 3D printer motion system assembly
• Robotic arm joint connections
• Conveyor system guide rails
• Interior trim fastening (black aesthetic)
• Avionics box mounting
• Sensor bracket installation
• Lightweight chassis assembly
• Server rack component mounting
• Heat sink retention systems
• Industrial PCB standoffs
• Equipment rack hardware
• Corrosion Resistance: 96hrs salt spray (ASTM B117)
• Operating Temperature: -50°C to +150°C
• Chemical Resistance: Withstands oils, fuels, and weak acids
• Galvanic Compatibility: Compatible with aluminum, steel, and carbon fiber
• Storage Conditions: -10℃ ~ +40℃, <75% RH in sealed packaging