PEEK Countersunk Hexagon Socket Screws
PEEK Countersunk Hexagon Socket Screws are a kind of semi-crystalline special engineering plastic with superb performance; they have strong chemical resistance, excellent heat resistance, wear resistance, flame retardancy and hydrolysis resistance.
M Size: M2.5-M16
peek plastic material: Polyetheretherketone (PEEK)
Thread Type: Hexagonal bolts
Length Range: 15mm-200mm (Customizable)
Finish: Natural/Black/Other Colors
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PEEK Countersunk Hexagon Socket Screws Overview
PEEK Countersunk Hexagon Socket Screw is a highly specialized fastener that combines the superior chemical and thermal resistance of PEEK (Polyether Ether Ketone) with a geometry designed for high-torque, flush installation. It is utilized in critical industrial applications that demand a fastener that is non-corrosive, lightweight, and capable of maintaining a sleek surface finish under extreme environmental conditions.
Product Parameters
PEEK Countersunk Hexagon Socket Screws typically adhere to the dimensional standards of ISO 10642 (or equivalent DIN 7991).
| Nominal Diameter (d) | Thread Pitch (P) | Head Diameter (D) | Head Angle (α) | Socket Size (s) |
| M3 | 0.5 mm | 6.0 mm | 90°C | 2.0 mm |
| M4 | 0.7 mm | 8.0 mm | 90°C | 2.5 mm |
| M5 | 0.8 mm | 9.5 mm | 90°C | 3.0 mm |
| M6 | 1.0 mm | 11.0 mm | 90°C | 4.0 mm |
| M8 | 1.25 mm | 14.0 mm | 90°C | 5.0 mm |
| M10 | 1.5 mm | 16.0 mm | 90°C | 6.0 mm |
| M12 | 1.75 mm | 18.0 mm | 90°C | 8.0 mm |
Key Features
PEEK Countersunk Hexagon Socket Screws are chosen when the application requires a fastener to excel in multiple extreme categories simultaneously:
Extreme Thermal Stability: Maintains structural integrity up to 260°C (500°C), making it suitable for high-heat industrial processes.
Superior Mechanical Strength: Offers the highest strength-to-weight ratio among polymer fasteners, with excellent creep resistance.
Chemical Inertness: Resistant to virtually all common solvents, acids, and bases, ensuring zero corrosion.
Flush Installation: The countersunk head provides an aerodynamic, snag-free, and cleanable surface finish.
Non-Conductive & Non-Magnetic: Essential for electrical isolation and use in sensitive medical or analytical instrumentation.
Applications
These screws are vital in high-tech and specialized environments where failure is costly or catastrophic:
Semiconductor Manufacturing: Securing cleanroom and wet-bench components where purity and chemical resistance are absolute requirements.
Aerospace: Used for internal paneling and assemblies, where the flush profile, lightweight nature, and high strength are critical.
High-Temperature Equipment: Fastening components in industrial ovens, sterilizers (autoclaves), and high-heat processing machinery.
Medical/Pharmaceutical: Employed in non-magnetic instruments and fluid systems requiring high heat resistance for sterilization.
Advantages
The decision to use PEEK Countersunk Hexagon Socket Screws is a premium choice, trading the ultimate load capacity of steel for unmatched environmental performance.
| Category | Advantage (Pro) | Disadvantage (Con) |
| Performance | Extreme Thermal & Chemical Resistance. Corrosion and Galling Immunity. Flush Design for clean surfaces. | Highest Cost: Significantly more expensive than any other common plastic or steel fastener. |
| Mechanical | Highest Polymer Strength and best resistance to creep under load. High Torque Drive (Hex Socket). | Lower Ultimate Load Capacity: Cannot match the absolute tensile strength of high-grade steel screws. |
| Installation | Wrench-driven (Hex Socket) allows for maximum controlled polymer torque. | Requires very precise hole preparation (countersinking) and strict torque control to avoid stripping the thread. |
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.