Swedish Precision Since 1899
THE WORLD'S
STRONGEST
BOLT
And it's stainless. Premium stainless steel fasteners delivering unmatched strength, safety and reliability for mission-critical applications worldwide.
And it's stainless. Premium stainless steel fasteners delivering unmatched strength, safety and reliability for mission-critical applications worldwide.
Superior resistance to harsh chemical environments, seawater, and extreme atmospheric conditions across all BUMAX grades.
Engineered to withstand millions of stress cycles without failure in dynamic load applications.
Maintains full mechanical properties from cryogenic temperatures up to 800°C operating environments.
Complete material traceability with 3.1 certificates and documented testing for every batch produced.
High-strength hex bolts for structural and mechanical assemblies.
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Precision nuts with superior thread engagement and load distribution.
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High tensile cap screws for demanding assembly requirements.
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Load-distributing washers for critical joint assemblies.
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Double-ended studs for flange connections and high-pressure systems.
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Self-tapping solutions including BUMAX Hard Taptite technology.
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Flush-mount fasteners for aerodynamic and aesthetic applications.
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All-metal prevailing torque lock nut for vibration resistance.
→The workhorse grade. Outperforms A4-80 in every dimension. Ideal for marine, chemical, and general industrial applications requiring outstanding corrosion resistance.
Offshore platforms, subsea equipment, and refinery applications.
Hull fittings and underwater installations.
Wind, solar, and nuclear power systems.
Engine components and EV battery assemblies.
Aircraft structures and satellite systems.
Reactors and piping in aggressive environments.
Connect with our fastener specialists to find the perfect grade and product for your application.