BUMAX® 88 provides corrosion resistance and strength in demanding applications.

Fasteners with enhanced properties

BUMAX 88® outperforms standard A4 fasteners in terms of:

  • yield strength
  • corrosion resistance
  • mechanical properties
  • fatigue resistance
  • magnetic permeability

These enhanced properties are achieved through a higher molybdenum content (minimum 2.5%), our unique manufacturing processes and sourcing of highest quality European raw material. In addition, all our products can be supplied with BUMAX 3.1 PED certification to help compliance with the design and manufacture of pressure equipment in accordance with PED 2014/68/EU.

Fasteners for demanding applications

BUMAX® 88 fasteners are used for water jets, sub-sea equipment, pumps, valves, wind turbines, high-pressure equipment, nuclear plants, submarines, particle accelerators and many other applications where commodity A4 fasteners are inadequate. As a result, BUMAX fasteners provide greater safety and will last significantly longer than standard A4 fasteners.


UNS: S31603

EN: 1.4432, 1.4436, 1.4435

Order BUMAX® 88

We have a large selection in stock for next day delivery from our warehouse.

Contact us to find out more about BUMAX® 88, and how it can benefit your applications.

BUMAX is available worldwide

Our extensive network of sales offices and distributors makes it easy to get in touch with us. Find your local sales office or distributor below. For other countries not represented, please contact our Main Sales Office.

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