Bumax Fasteners: The Strongest Stainless Steel Bolts for Demanding Environments
Engineered for extreme environments, Bumax stainless steel fasteners deliver unrivaled strength, exceptional corrosion resistance, and certified reliability. Trusted by aerospace, offshore energy, marine, and construction industries worldwide.
🟠 Highest Strength Stainless Steel – Up to 1,000 MPa tensile strength
🟠 Corrosion Resistance – Ideal for marine and chemical environments
🟠 Certified Performance – ISO 9001, EN 10204-3.1, and more
🟠 Trusted in Critical Applications – Used in wind farms, oil rigs, and aerospace assemblies
Why Companies Choose BUMAX
Built for extreme environments, BUMAX fasteners outperform standard stainless steel solutions in every category that matters. With tensile strength up to 1,300 MPa, they offer unmatched mechanical performance — making them the strongest stainless steel fasteners in the world. BUMAX fasteners also deliver exceptional corrosion resistance, proven in some of the most demanding marine, offshore, and chemical environments.
They’re designed to withstand high stress, fatigue, and fluctuating temperatures, ensuring long-term reliability even in the harshest conditions. Thanks to their low magnetic permeability, they’re ideal for sensitive applications where electromagnetic interference is a concern. And with fewer failures and replacements over time, BUMAX provides a lower total cost of ownership, making it the smart choice for critical applications where performance and longevity matter.
BUMAX PRODUCT GRADES
Stainless steel fasteners offer a unique combination of properties that make them ideal for a wide range of demanding applications. CSG specializes in matching the right Bumax grade to your specific requirements — whether you need superior corrosion resistance, high-temperature performance, mechanical strength, or low magnetic permeability. With decades of experience, we ensure you get the optimal solution for a trouble-free lifespan and the lowest possible lifecycle cost.
Empower
Growth
BUMAX® 88/109
BUMAX 88 and BUMAX 109 are premium A4 fastener offered in two strength classes as well as have many advantages compared to a typical A4 fasteners.
BENEFITS
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Top quality steel from Europe
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High strength
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Great corrosion resistant
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Lower & consistent thread friction
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Low magnetic permeability
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BUMAX STAINLESS STEEL FASTENERS
We offer a full range of high-performance Bumax stainless steel fasteners — from standardized products available for immediate delivery to fully customized solutions engineered for your exact application needs.
As experts in precision fastener design, we collaborate directly with engineers and procurement teams to develop components that meet strict requirements for strength, corrosion resistance, and long-term performance.
Whether you need off-the-shelf dependability or a custom-engineered solution, our Bumax fasteners are built to perform — even in the world’s most demanding environments, including offshore, aerospace, marine, and structural applications.
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Hexagon Head Bolt
& Screws
Hexagon
Nuts
Hexagon Socket Head Cap Screw
Plain
Washers
Stud & Stud
Bolts
Thread Forming
Screws
Hexagon Socket Head Countersunk Screws
BUMAX
Lock
BUMAX
Hard
Plain
Washers
REAL RESULTS WITH BUMAX BOLTS
In high-stakes environments, performance isn’t optional — it’s essential. That’s why leading companies in aerospace, offshore energy, infrastructure, and chemical processing turn to Bumax fasteners. Below are real-world success stories that showcase how Bumax has delivered strength, corrosion resistance, and compliance in the most extreme conditions.
BUMAX: TRUSTED BY LEADERS WORLDWIDE
At Component Solutions Group, we don’t just claim performance — we deliver it in the field, on the job, and under pressure.From aerospace assemblies to offshore rigs, our clients rely on Bumax fasteners to stand up to the most extreme environments — and keep performing. Here’s what they have to say.
"We are very happy to have found BUMAX, and I would strongly recommend BUMAX products to other companies that experience similar galling issues."
Kennichi Johara,
Nara Machinery
"BUMAX was able to provide us with stainless steel fasteners that fully met our high strength and excellent corrosion resistance requirements for the Slussen project."
Bob Hamberg,
Skanska Sweden
"When we looked for premium fasteners, BUMAX was the only company that could provide the high-strength fasteners with the corrosion resistance we required for our applications."
Peter Rainer,
Ringfeder
"We investigated various fastener alternatives, Including titanium-nitride coated fasteners, but BUMAX was the only solution that fully met our requirements while still being cost effective.”
Mathijs Baars,
Nikhef
