Products → SB Bolts EN 15048

SB Bolts EN 15048

Stafa is the European supplier of structural bolts. Stafa has access to an extensive and comprehensive stock of construction bolts that meet the current international standards.


  • Non-preloaded bolt/nut assemblies
  • Certified according to EN 15048-1 / 8.8 (ISO 4014 / 4032 and ISO 4017 / 4032)
  • Zinc plated CR3 (according to ISO 4042 / A2K)
  • Hot dip galvanized (according to ISO 10684)

The majority of steel constructions are composed with nonpreloaded construction bolts. Non-preloaded bolt connections must meet EN 15048, in which part 1 describes the general requirements and part 2, the suitability test. That’s why Stafa has access to an extensive and comprehensive stock of construction bolts that meet EN 15048-1. The manufacturer guarantees that the bolt/nut assemblies they supply meet the specifications set by this standard.

EN 15048 requirements

  • Bolts and nuts shall be packed and supplied in the original and unopened box
  • Bolts and nuts in a single connection must originate from one and the same manufacturer.
  • Oppervlaktebehandeling van bouten en moeren mag uitsluitend worden aangebracht onder controle van de fabrikant
  • Surface treatments on the bolts and nuts may only be applied under the manufacturer’s supervision.

EN 15048 marking of nuts and bolts

  • Property class marking
  • Special marking “SB” (Structural Bolting)
  • Identification mark of the manufacturer of the assembly

The label includes:

  • CE marking
  • Lotnummer
  • Reference to EN 15048-1
  • “SB” marking
  • Identification number of the certified authority and manufacturer
  • Dimension
  • Property class marking
  • Product designation (ISO standard for bolts ISO 4014 or 4017 and nuts ISO 4032)
Pim van Leeuwen

Curious about what Stafa can do for your organization? I will gladly help you.

Pim van Leeuwen

Commercial Director

Curious to find out
what Stafa can mean to your organization?
Please contact Stafa for advice.