Stainless steel fasteners have properties that offer attractive solutions for a wide range of applications.

We help you to choose the right material for your particular needs – to guarantee a trouble-free lifespan and low lifecycle cost. (read more)

BUMAX® SDX NORSOK fasteners are accredited to NORSOK certification and can be provided in super duplex grades.NORSOK accredited

BUMAX are accredited according to NORSOK M-650, NORSOK M-630 MDS D60 and listed as an approved manufacturer on STATOIL TR2000. BUMAX SDX NORSOK can be offered in Super Duplex grades UNS S32750 and UNS S32760 for all types of fastener up to 1½

BUMAX delivers high-strength pins to leading manufacturer of conveyor belts (read more)

BUMAX Lock stainless steel lock nuts are quick to install and reliably maintain fastener preload. Ensure joint integrity, even under the most severe vibration conditions. More info- BUMAX Lock datasheet. (read more)

BUMAX bolts are now available with built-in preload sensors to enable remote preload monitoring, analysis and insights. Strainlabs – a provider of comprehensive smart-bolt systems – has made this possible by adding their sensor technology to BUMAX bolts.

BUMAX bolts with Stainlabs sensors give peace of mind by verifying in real time that each individual bolt is securel... (read more)

Hexagon Nut - We supply premium quality hexagon nuts in a variety of dimensions and grades.

You can order hexagon nuts directly from this page. Simply, select the product you are interested in and click ‘Add to shopping cart’ below the product preview image and ‘Request quote’. We’ll then get back to you with a quote. You will need to create a free ac... (read more)

We supply premium quality hexagon socket head cap screws in a variety of dimensions and grades.

You can order hexagon socket head cap screws directly from this page. Simply, select the product you are interested in and click ‘Add to shopping cart’ below the product preview image and ‘Request quote’. We’ll then get back to you with a quote. You will ne... (read more)

We offer a range of standard and custom-made stud bolts. (read more)

You can order hexagon head bolts and screws directly from this page. Simply, select the product you are interested in and click ‘Add to shopping cart’ below the product preview image and ‘Request quote’. We’ll then get back to you with a quote. You will need to create a free account if you haven’t done so already. (read more)

Duplex stainless steel, also known as Ferrite-Austenitic stainless steel, has a mixed microstructure of austenite and ferrite. It is a steel type that consists of high strength corrosion resistant grades and is characterized into groups based on their alloy content and corrosion resistance.

Types of duplex stainless steel:

• Lean duplex – similar or lower c...

BUMAX was selected to overcome galling issues on adaptive secondary mirror for the NASA telescope. Read more (read more)

BUMAX Lock- a range of all metal stainless steel lock nuts, combining both superior locking performance and high corrosion resistance (read more)

What are high-tensile fasteners?

High-tensile fasteners are specialized components designed to withstand extreme stress without deforming or failing. These fasteners are graded based on their tensile strength, which measures their ability to resist breaking under tension. One of the key differentiators for most BUMAX fasteners is that they are cold formed and thread rolled. The pr... (read more)

High-tensile fasteners: the backbone of modern engineering

High-tensile fasteners are specialized components designed to withstand extreme stress without deforming or failing. These fasteners are graded based on their tensile strength, which measures their ability to resist breaking under tension. One of the key differentiators for most BUMAX fasteners is that they are col... (read more)

With 20,000 vibrations per second, BUMAX bolts must deal with extreme forces during the ultrasonic welding process.

Schunk Sonosystems is a global leader in developing and building machines for ultrasonic metal welding – such as their industry-leading flexure sonotrode. Their machines include a sonotrode or welding tip that transfers vibrational energy to the workpiece. Up t... (read more)

Within 24 hours, BUMAX provided the customer TNO with urgently needed critical fasteners that overcame their galling issues.

Customer: TNO – the Netherlands Organisation for Applied Scientific Research.

BUMAX product: BUMAX® DX 129 EPK

Crucial properties:

• Anti-galling
• High strength
• Rapid delivery

We supply premium quality hexagon nuts in a variety of dimensions and grades.

You can order hexagon nuts directly from this page. Simply, select the product you are interested in and click ‘Add to shopping cart’ below the product preview image and ‘Request quote’. We’ll then get back to you with a quote. You will need to create a free account if you h... (read more)

Our products are particularly used in off-shore critical applications with the need for extreme corrosion resistance, high strength, low weight and a life expectancy of up to 50 years. We stock supplies of super duplex fasteners according to NORSOK M-650, D60.

Our offering

BUMAX supplies corrosion-resistant high-strength fasteners to various oil industry suppliers and oil p... (read more)

Take a closer look at Bumax’s stock product range of high strength stainless steel fasteners. The optimal choice for high performance and safety critical fastening applications in the harshest environments! (read more)

BUMAX SDX NORSOK fasteners are accredited to NORSOK certification and can be provided in super duplex grades. (read more)