Outer hexagon PEEK screw

Outer hexagon PEEK screw

Core Features

  • Standard External Hexagon Head: The traditional outer hex profile allows for maximum torque transmission using standard wrenches or sockets, making it the preferred choice for heavy-duty assembly where high clamping force is required.
  • High-Performance Virgin PEEK: Manufactured from 100% Polyether ether ketone, providing an exceptional strength-to-weight ratio and maintaining mechanical integrity in continuous operating temperatures up to 250°C (482°F).
  • Absolute Chemical Inertness: Completely immune to rust, oxidation, and galvanic corrosion. It remains unaffected by continuous exposure to harsh acids, bases, saltwater, and aggressive organic solvents.
  • Electromagnetic Transparency: 100% non-magnetic, radiolucent, and highly electrically insulating, completely eliminating the risk of short circuits, arcing, or signal interference in sensitive high-energy environments.
  • Anti-Galling Properties: Unlike stainless steel or titanium bolts, PEEK threads will not cold-weld or gall under tension, ensuring reliable and easy disassembly even after prolonged exposure to high stress or heat.

At Kriloha Ltd., we understand that structural fastening in corrosive or high-voltage environments pushes standard metals beyond their limits. Our Outer Hexagon PEEK Screws are our engineered answer for “High-Torque-Clamping” and “Total-Environmental-Immunity.” As a premier provider of advanced polymer components, Kriloha has developed a heavy-duty PEEK fastener line that delivers the mechanical holding power required for industrial assemblies without the vulnerabilities of traditional steel.

The engineering of our outer hexagon series is based on Drive-Wall Fortification and Tensile-Load-Distribution. Because an external hex head allows for the highest levels of manual or mechanical torque, we utilize advanced injection molding combined with precision secondary machining to ensure the hex profile is dense and perfectly dimensioned. This prevents the corners from rounding off under a heavy wrench. At Kriloha, we verify that our thread pitches are perfectly uniform, preventing the binding that plagues inferior fasteners. This creates a “Failure-Resistant” locking system that secures your largest components without rusting, conducting, or degrading.

Manufacturing these advanced polymer components involves strict Dimensional and Thermal Verification. We ensure that every hex screw provides the reliable, creep-resistant performance required for ultra-high vacuum (UHV) and heavy chemical applications. Whether you are assembling the structural frame of a high-Tesla MRI or clamping high-pressure chemical transfer pipes, Kriloha PEEK Screws provide the exact environmental durability your facility demands. By choosing Kriloha Ltd., you are investing in a “Future-Proof” material technology that secures your most substantial industrial assets.

Primary Use Cases

  • Chemical Processing Flanges: Bolting together pipe flanges and heavy-duty fluid valves where standard steel bolts would rapidly succumb to chemical corrosion.
  • Medical & Diagnostic Imaging: Providing structural support for the frames of MRI and CT machines where absolute non-magnetic (RF transparent) properties are legally required.
  • Semiconductor Manufacturing: Fastening vacuum chamber bulkheads and clean-room equipment where exceptionally low outgassing and high chemical purity are mandatory.
  • Marine & Subsea Infrastructure: Securing underwater sensors and structural housings; PEEK absorbs virtually no moisture and is completely immune to saltwater degradation.
  • High-Voltage Power Distribution: Acting as a high-strength, non-conductive structural tie in massive electrical transformers and high-capacity battery storage banks.

Frequently Asked Questions

  1. What is the main advantage of an Outer Hexagon head over a Hex Socket (Allen) head?

An outer hexagon head allows you to use external sockets and long-handled wrenches, providing superior leverage and higher torque transmission compared to an internal socket drive. Furthermore, external hex heads are easier to clean and do not trap debris like internal sockets do.

  1. Can I replace a standard steel hex bolt directly with a PEEK hex bolt?

Yes, but with crucial torque adjustments. While PEEK is incredibly strong, it is a thermoplastic and cannot be torqued to the extreme specifications of a Grade 8 steel bolt. You must adhere to specific PEEK torque guidelines to prevent stretching the bolt or stripping the threads.

  1. Does Kriloha recommend using washers with these hex screws?

Absolutely. We highly recommend pairing these screws with Kriloha PEEK flat washers. Because the outer hex head is tightened with a wrench, a washer protects the softer mating material below from being gouged or scratched as the bolt head rotates.

  1. How does PEEK hold up against hydrolysis (steam)?

PEEK has phenomenal hydrolysis resistance. It can withstand thousands of hours of continuous exposure to high-pressure steam and water without any significant degradation in tensile strength, making it ideal for reusable medical tools and food processing equipment.

  1. Are these screws available in both metric and imperial sizes?

Yes. Kriloha manufactures our Outer Hexagon PEEK screws across a comprehensive range of standard metric (e.g., M4 through M16) and standard imperial (e.g., 1/4-20, 3/8-16) thread pitches to accommodate global engineering specifications.

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