PC Hexagon socket head screw
PC Hexagon socket head screw has strong impact resistance, strong fatigue resistance, good heat aging resistance, excellent insulation performance, resistance to weak acids and weak alkalis; and is self-extinguishing.
M Size: M3-M12
peek plastic material: PC Polycarbonate
product type: Hexagon socket head bolt
color: Natural/Black/Other Colors(Customizable)
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PC Hexagon socket head screw Overview
PC (Polycarbonate) Hexagon Socket Head Screw is a high-impact plastic screw recognized for its exceptional toughness, good temperature stability, and superior electrical insulation. The Hexagon Socket (Allen drive) allows for higher, more controlled installation torque compared to slotted or Phillips drives, maximizing the strength of the polycarbonate material for a secure assembly.
I. Overview and Design
| Feature | Detail | Purpose |
| Material (PC) | Polycarbonate. An engineering thermoplastic known for its extreme toughness, high impact resistance, and clarity. | Provides superior resistance to breakage, non-conductivity, and good dimensional stability. |
| Head Style (Cylindrical Socket Head) | Features a tall, cylindrical head with a flat top. | Provides a large bearing surface for strong clamping and offers the highest shear resistance for a PC screw. |
| Drive Style (Hexagon Socket) | The Allen drive recess. | Allows for maximum installation torque achievable with polycarbonate, minimizing the risk of cam-out. |
| Application | Medium-stress structural fastening and securing covers in electronic and machinery applications. | Ideal for use in tight spaces where a strong, non-conductive, and impact-resistant fastener is needed. |
Product Parameters
PC Hexagon Socket Head Screws typically follow 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) |
| M3 | 0.5 mm | 5.5 mm | 3.0 mm | 2.5 mm |
| 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 |
Key Features
Polycarbonate Socket Head Screws are primarily selected for their balance of toughness and functionality:
Exceptional Impact Resistance: Highly resistant to shattering or cracking, even under sharp impact or shock loads.
Best Torque for PC: The Hexagon Socket drive allows for the strongest, most controlled tightening possible with polycarbonate material.
Good Temperature Stability: Maintains stability up to approximately $115^\circ \text{C}$.
Superior Electrical Insulation: Provides excellent dielectric properties, crucial for sensitive electronics.
Corrosion Immunity: Immune to rust and galvanic corrosion.
Key Polycarbonate (PC) Properties
Applications
PC Hexagon Socket Head Screws are vital where electrical safety, toughness, and tight fastening are required:
Electronics and Control Panels: Mounting power supplies, circuit boards, and securing enclosures where non-conductivity and impact resistance are paramount.
Machinery Guards and Covers: Fastening clear polycarbonate safety shields to industrial equipment, leveraging the material’s toughness and clarity.
Lighting and Display: Securing structural components within light fixtures, utilizing its heat resistance and non-conductivity.
Security and Access Panels: Used in enclosures where the socket drive provides a slight level of tamper resistance compared to common slotted drives.
Advantages
| Category | Advantage (Pro) | Disadvantage (Con) |
| Performance | Superior toughness and impact resistance. Excellent electrical insulation. High torque drive. | Chemical Sensitivity: Attacked by strong solvents, alkalis, and aromatic hydrocarbons, leading to stress cracking. |
| Design | Cylindrical head offers maximum shear strength and large bearing surface. | Lower High-Temperature Limit compared to PEEK or GF-reinforced materials. |
| Environmental | Lightweight and non-corrosive. | Poor UV Resistance: Prone to yellowing and embrittlement if exposed to long-term direct sunlight. |
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.