ZrO2 Hexagon socket head screw
ZrO2 Hexagon socket head screw are corrosion-resistant, wear-resistant, high-temperature-resistant, insulating, non-magnetic, and high-purity.
M Size: M4-M12
peek plastic material: Zirconia ceramic fasteners
product Type: Hexagon socket head bolt
Finish: Natural/Black/Other Colors(Customizable)
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ZrO2 Hexagon socket head screw Overview
ZrO2 (Zirconium Dioxide, or Zirconia Ceramic) Hexagon Socket Head Screw is an ultra-high-performance ceramic fastener. It is primarily selected for its extreme hardness, exceptional mechanical strength, superior wear resistance, and high-temperature stability. The Hexagon Socket drive allows for controlled, concentrated torque application, maximizing the assembly strength achievable with this advanced material. ZrO2 is non-metallic and non-magnetic, making these screws indispensable in environments where the combination of high mechanical load, high heat, and chemical inertness is critical.
I. Overview and Design
| Feature | Detail | Purpose |
| Material (ZrO2 Ceramic) | Zirconium Dioxide (Yttria-Stabilized Zirconia, Y-TZP). A structural ceramic known for its highest toughness among advanced ceramics (due to transformation toughening). | Provides a fastener immune to corrosion and wear, offering high strength comparable to steel in compression, and ultra-high thermal stability. |
| Head Style (Cylindrical Socket Head) | A tall, cylindrical head with a flat top. | Provides a large material volume for high shear strength and allows for installation in tight spaces where external wrench access is limited. |
| Drive Style (Hexagon Socket) | The Allen drive recess. | Allows for the most secure and controlled installation torque achievable with ceramic fasteners, crucial for safe use. |
ZrO2
Product Parameters
ZrO2 Hexagon Socket Head Screws typically follow established metric standards for socket head cap screws, such as ISO 4762 (equivalent to DIN 912).
| Nominal Diameter (d) | Thread Pitch (P) | Head Diameter (D) | Head Height (K) | Socket Size (S) |
| M4 | 0.7 mm | 7.0 mm | 4.0 mm | 3.0 mm |
| M5 | 0.8 mm | 8.5 mm | 5.0 mm | 4.0 mm |
| M6 | 1.0 mm | 10.0 mm | 6.0 mm | 5.0 mm |
| M8 | 1.25 mm | 13.0 mm | 8.0 mm | 6.0 mm |
| M10 | 1.5 mm | 16.0 mm | 10.0 mm | 8.0 mm |
| M12 | 1.75 mm | 18.0 mm | 12.0 mm | 10.0 mm |
Key Features
ZrO2 offers a unique combination of ceramic properties, enhanced by its renowned toughness:
Extreme Hardness & Wear Resistance: Maintains performance in highly abrasive, sliding, or erosive environments at high speeds.
Highest Toughness (among ceramics): Superior resistance to crack propagation compared to (Alumina), reducing the risk of catastrophic failure.
Ultra-High Temperature Stability: Maintains mechanical strength and dimensional stability at temperatures well above 1000°C.
Chemical Inertness: Almost completely immune to corrosion from acids, alkalis, molten salts, and strong chemicals.
Non-Conductive & Non-Magnetic: Essential for electrical insulation and use in sensitive magnetic fields (e.g., MRI).
Advantages and Disadvantages and Usage Scenarios
| Category | Advantage (Pro) | Disadvantage (Con) | Usage Scenarios |
| Performance | Extreme toughness and strength (highest of all ceramics). Exceptional wear resistance and dimensional stability. | Very High Cost: Expensive due to specialized material processing (sintering, grinding). | High-Wear Machinery: Fastening components in pumps, valves, or tooling subject to extreme friction and erosion. |
| Material | Ultra-high thermal stability and complete chemical inertness. Non-conductive and non-magnetic. | Brittleness: Despite its toughness, it is still brittle compared to metal; susceptible to failure from excessive impact or sudden thermal shock. | Semiconductor/High-Purity: Securing parts in plasma etching chambers and systems requiring zero contamination. |
| Design | Socket head allows for high, controlled torque and enables compact, recessed assembly. | Installation Risk: Requires precise, low-impact torque tools to avoid stress-induced micro-cracking during installation. | Vacuum Systems/Aerospace: Fastening in high-vacuum or ultra-high temperature environments where outgassing and thermal stability are crucial. |
Packaging & Delivery
Standard packaging includes PE bag, foam cover, and one double-deck corrugated outer carton for safety during transit. Delivery time is 5-15 working days depending on the quantity.