PEEK Cross countersunk Screws

PEEK Cross countersunk Screws Overview

PEEK countersunk head bolts (polyetheretherketone countersunk Phillips head bolts), also known as PEEK Phillips flat head screws, are high-performance polymer fasteners designed for applications requiring flush, clean, and snagging-free surfaces, combining the superior properties of PEEK material. They feature extremely high chemical resistance, high thermal stability, and non-metallic, low-profile mounting characteristics.

Product Parameters

PEEK Countersunk Screws are manufactured to high precision, often adhering to common metric standards (e.g., DIN 965/ISO 7046) for recessed head screws.

Key Features

The screw’s performance is driven by its material and geometry combination:

• Extreme Thermal Resistance: PEEK has the highest continuous service temperature  among standard engineering plastics, making it a reliable PEEK High Temperature Flat Head solution for demanding thermal cycling.
• Unrivaled Chemical Inertness: It possesses exceptional PEEK Chemical Resistant Countersunk properties, resisting virtually all common aggressive chemicals, acids, and solvents.
• High Mechanical Integrity and Stability: PEEK offers high tensile strength, stiffness, and excellent PEEK Screw Creep Resistance, ensuring the joint maintains its preload reliably under stress and temperature fluctuations.
• Flush Finish (Low Profile): The Countersunk head is designed to recess completely into the mating surface, achieving a smooth, continuous surface (PEEK Flush Mount Fasteners) critical for aesthetics, cleanliness, and aerodynamics.
• Non-Metallic Benefits: It is absolutely corrosion-proof, non-magnetic, and provides reliable PEEK Electrical Insulating Flat Head properties, even at high temperatures.

Hexagon Socket Screws main characteristics diagram

Applications

PEEK Countersunk Screw is utilized in applications where surface cleanliness, non-conductivity, and extreme environment resistance are simultaneously required:

• Medical and Pharmaceutical Equipment: Used as PEEK Medical Grade Screws in devices and fluid paths that require repeated, harsh sterilization cycles (autoclave) and must have a smooth surface for hygiene.
• Semiconductor Manufacturing: Applied in wafer processing and handling tools due to its ultra-high purity, resistance to plasma, and extremely low outgassing properties.
• Aerospace and Defense: Used for securing internal panels, housings, and components in areas where the fastener must be lightweight, thermally stable, and not interfere with air currents (PEEK Screw Aerospace Grade).
• Scientific and Analytical Equipment: Employed where PEEK Non-Magnetic Countersunk properties and resistance to corrosive media (like strong laboratory chemicals) are essential.

Advantages VS Disadvantage

The choice of PEEK involves prioritizing its superior environmental stability and strength-to-weight ratio over its high cost and ultimate load capacity compared to structural metals.

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.