BUMAX stainless steel fasteners are used in advanced scientific research facilities worldwide, providing reliable performance in critical fastening applications and some of the most demanding operating environments on the planet.

Big science fastener applications

  • Particle accelerators
  • Particle colliders
  • Tokamaks
  • Large optical telescopes
  • Antenna arrays
  • Electron microscopes

Our big science offering

Our products are the optimal choice for critical fastening in applications operating in high-magnetic fields, high-vacuum assemblies, extreme temperatures or high-precision equipment. Our high-strength fasteners ensure consistency, installation accuracy, a low risk of galling and low-magnetic permeability.

We also offer a host of additional options including, specialized fastener variants such as captive, vented, Pre-Assembed Screws (SEMS) screws for critical assemblies, surface treatments for galling and assembly control, and cleaning and packaging to ensure low particle emissions and outgassing.

BUMAX is the only manufacturer in the world offering high-alloy stainless steel miniature screws that combine controlled low magnetic permeability with high strength, exceeding class 10.9. Our fasteners are fully European traceable and every BUMAX product can be offered with 3.1 certification as standard.

Discuss more complex requirements with our technical team

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Suitable high-strength BUMAX grades for big science applications:

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BUMAX® 88

BUMAX 88 is one of our flagship stock grades that provides higher strength, corrosion resistance and fatigue performance than A4-80 generic stainless steel fasteners.

BUMAX® 109

BUMAX 109 is one of our flagship stock grades that offers higher strength than A4-100 and is the strongest A4/316 stainless steel fastener on the market.

BUMAX® DX 129

BUMAX DX 129 is a duplex stainless steel grade with very high strength combined with excellent corrosion resistance.

BUMAX® NITRO 109

BUMAX NITRO 109 is a nitrogen-strengthened austenitic stainless steel that provides superior corrosion resistance and strength for large diameter bolts.

BUMAX® HE

BUMAX HE is a high-temperature resistant grade for applications requiring high strength and good oxidation resistance at temperatures up to 700°C.

Trusted in big science applications

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“BUMAX was the only solution that fully met our requirements while still being cost effective.”

Mathijs Baars

Mechanical Engineer at the Dutch National Institute for Subatomic Physics

Contact our technical team to discuss your custom BUMAX fastener requirements.

We can help you find the optimal solution for your specific requirements.

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