A superb combination of corrosion resistance, temperature stability and non-conductivity

• Exceptional temperature resistance up to 3000°F (1650°C)
• Outstanding corrosion resistance to acids, solvents, salts, and organics
• Excellent electrical & thermal insulator
• High purity
• Alumina hex head cap screw features and benefits
• Alumina ceramic datasheet

Alumina ceramic hex head cap screws are one of the most thermally resistant screws available. Due to their outstanding thermal resiustance, alumina ceramic hex head cap screws are geared for the most demanding high temperature applications. Alumina ceramic screws also have outstanding corrosion resistance and are highly chemically resistant to acids, solvents, and salts. Additionally, alumina ceramic hex head cap screws find many uses in high voltage applications due to their non-conductive electrical properties.

Alumina ceramic hex head cap screws are available in both metric and standard sizes. Please contact us if you have any questions about the properties or availability of our ceramic hex head cap screws.

hex head cap screws made from customer specified ceramic grades or custom dimensions are available upon request.

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

Ceramic Alumina Hex Head Cap Screw Features and Benefits

It is important to differentiate between a ceramic alumina 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, ceramic alumina hex heads offer strong, stable joints because of their large head service.

The Hex Comparison

Ceramic Alumina Hex Head Cap Screw Advantages  

The most important feature of a ceramic alumina 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 ceramic alumina 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. 

Common Ceramic Grades

Alumina 99.8%

Alumina ceramic or Aluminum oxide (Al₂0₃) is the most common grade of alumina ceramics and is designated as being 99.8% pure. Alumina is most known for high temperature stability and has a usable temperature limit of 3000°F (1650°C). Alumin has the greatest balance of economy, mechanical and thermal properties.

Various other compositions of alumina ceramic are available upon request.

Alumina and Zirconia Properties

Corrosion Resistance of Common Ceramics