The ultimate temperature resistant polymer

• Temperature resistant up to 300°C (572°F) continuous and 500°C (932°F) intermittent
• Low coefficient of friction and high wear resistance 
• Chemically resistant to common solvents including acids, salts, and oils
• Low out gassing, low particle generation and inherent purity
• Unique physical, thermal & eletrical properties
• Material datasheet for Vespel
• Vespel hex head cap screw features and benefits

Polyimide or Vespel® hex head cap screws are made from an advanced temperature resistant polyimide resin. Polyimide or Vespel hex head cap screws offer a unique balance of mechanical, thermal, and chemical properties for outstanding performance in a variety of demanding applications such as automotive, machinery, industrial equipment, aerospace, and semiconductor equipment.

Polyimide or Vespel hex head cap screws also have the unique combination of properties such as excellent mechanical strength and toughness, exceptional radiation resistance, robust chemical resistance to many solvents, a low coefficient of thermal expansion, excellent creep resistance and flame retardance.

Polyimide or Vespel hex head cap screws are available in both metric and standard sizes. Contact us to learn more about polyimide screws or Vespel screw properties and availability.

Screw Types: Flat Head Screws, Hex Cap Screws, Pan Head Screws, Set Screws, Socket Head Cap Screws 

Vespel Hex Head Cap Screw Features and Benefits

It is important to differentiate between a Vespel hex head cap screw and hex head bolt. 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, Vespel hex heads offer strong, stable joints because of their large head service.

The Hex Comparison

Vespel Hex Head Cap Screw Advantages  

The most important feature of a Vespel hex head cap screws is that it has a larger bearing surface area which provide better clamping pressure than other type of fastener such as a socket head cap screw. Additionally, since debris build up is less of an issue with this style of fastener verses a socket head cap screw, they are ideal of dirty applications where particles could clog up a socket. Though Vespel socket heads are typically used for tight access applications, hex heads can be a better choice when there is only side clearance available for tightening. 

Chemical Resistant Vespel screws