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Specialization field

Threaded fastening elements

Quality assesment and characterization of screws, nuts, washers and threaded assemblies.

AZTERLAN has a specialized and global offer to ensure the quality and characteristics of the different fastening elements and threaded assemblies, as well as the correct definition of bolted joints.

Elements tested

Screws, nuts, washers and threaded assemblies made of all types of metallic materials (mainly carbon steel, stainless steel, titanium, brass), geometries and sizes.  

Main international standards of reference

ISO 898-1, ISO 898-2, ISO 898-3, ISO 898-4, ISO 898-5, ISO 898-6, ISO 898-7, ASTM 370, ASTM F606, 14399-1, 14399-2, 14399-3, 14399-4, 14399-5, 14399-6, EN 1090-1, EN 1090-2, ISO 3506-1, ISO 3506-2, ISO 16047:2005, UNE-EN 14399-2:2016, DIN 18800-7:2002.

We have the technical and material means, as well as qualified personnel to respond to the needs of the sector.

  • ENAC accreditation.
  • Deadlines adjusted to the needs of the industry.
  • Confidentiality guarantee.
  • Independent laboratory, with more than 40 years of experience in the sector.
  • Top-tier technological capabilities.

The most comprehensive offer to ensure the
performance of fastening elements

Non destructive testing

Control of superficial defects of the fixing elements once manufactured or in the state of supply. The controls are carried out according to the standard or specification established in each case, in order to reveal defects that may cause catastrophic failures in service.

The tests carried out by certified personnel (AEND).

Destructive testing

These tests are carried out in accordance with international ISO and ASTM standards and on geometries and metrics of all kinds.

Other services

Contact our team of experts in advanced characterization of metallic materials.

Urko Uribe

Urko Uribe
Head of Mechanical testing

Ibai Gallastegi

Ibai Gallastegi
Head of Corrosion testing

Carmelo Santamarina

Carmelo Santamarina
Head of Non Destructive testing


David López
Head of Chemical testing

Jose Antonio Goñi

Josean Goñi
Technical Manager of In-Service Failure Diagnosis


Contact Urko.

Contact Ibai.

Contact Carmelo.

Contact David.

Contact Josean.

How can we help you?

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Contact Xabier

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Contact with Dra. Anna Regordosa

Contact with Dr. Rodolfo González-Martínez

Contact with Ander Areitioaurtena.

Contact with David Aristondo.

Contact with Juan J. Bravo.

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