The optimal balance of chemical, mechanical and thermal propertieshex bolt

Polyetheretherketone, Victrex® or PEEK hex head bolts offer a unique combination of properties for some of the most extreme applications. PEEK / Victrex bolts are known for their excellent wear resistance, best in class fatigue resistance, high purity and excellent chemical resistance to organics, acids and bases.

Depending on the application, PEEK hex head bolts can be reinforced with glass fibers for improved strength and stiffness properties. Reinforced PEEK bolts offer greater mechanical robustness especially in applications beyond 350°F (175°C).

PEEK bolts are well suited for applications in chemical processing, electronics, transportation, healthcare and other industrial uses.

Bolts made from customer specified PEEK grades are available upon request. See our online store (right side) for common PEEK bolts or contact us for specialty or quantity requests.

Bolt Types Available: Hex Bolts

PEEK Hex Head Bolt Features and Benefits

It is important to differentiate between a PEEK hex head bolt and hex head cap screw. Often people assume they are the same, but they are actually very different fasteners in terms of how they are manufactured, as well as from an application perspective. Regardless of your choice, PEEK hex heads offer strong, stable joints because of their large head service. 

The Hex Comparison

Hex Head Bolts

Hex Head Cap Screw
  • Hex bolts have a flat end and lack the washer face under the head.
  • Appropriate for when mechanical properties are more important than dimensional tolerances.
  • Features flat washer facing under the bolt head.
  • Also called a finished hex bolt. 
  • Has tighter tolerances on the body dimensions. 
  • Best used for precise applications where tight tolerances on the body dimensions are required. 


Common PEEK Bolt Grades

PEEK 100% / Unfilled

PEEK, with no fillers is unreinforced and 100% polymer. Even without glass or carbon fiber reinforcement, this one of the strongest polymers we offer and well suited for a variety of applications including FDA food contact and other applications requireing high purity. 

PEEK Glass Fiber Reinforced

PEEK 30% Glass Fiber Reinforced provide the same chemical resistance and natural PEEK but nearly doubles in tensile strength.

PEEK Carbon Fiber Reinforced 

PEEK 20% Carbon Fiber Reinforced provides approximately 2.5 times the strength of pure PEEK. 

PEEK Extreme

PEEK Extreme is our proprietary receipe for the highest strength PEEK utilizing carbon fiber reinforcement. This version of PEEK over 3 times stronger than standard unreinforced PEEK. 


 Mechanical Properties of PEEK

PEEK Tensile Curves  PEEK Tensile Data

Chemical Resistance of PEEK / Victrex® Bolts

PEEK Chemical Resistance

PEEK Properties

PEEK Properties

·        Hex boltshave a flat end and lack the washer face under thehead.

·        Appropriate for when mechanical properties are more important than dimensional tolerances.

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Call: 888-393-4517 or Submit a Request

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