Quality Accreditations

Hague Fasteners are pleased to present their registration certificate approving their quality management system to ISO9001:2015 and to manufacture PED Fasteners with their Pressure Equipment Directive Accreditation 2014/68/EU to Annex I Section 3.1 and 4.3.

ISO9001 Certificate
Hague PED Certificate

Manufacturing Inspection Test Plans

Hague Fasteners utilise UKAS approved Laboratories to perform detailed and independent test reports where required by specific client Specifications or where built into a Critical Project Inspection Test Plan which Hague produce for detailed control of production, testing, documentation and release of their most critical projects. ITP’s are produced as required so that full traceability and production detail is controlled and inspection and witness points made available for Client inspection or 3rd party witnessing as required.

UKAS Bolt & Fastener Testing

  • Tensile Testing
  • Charpy Impact Testing
  • Chemical Analysis
  • MPI (Magnetic Particle Inspection)
  • DPI (Dye Penetrant Inspection)
  • Elevated Tensile Testing
  • Hardness Testing
  • Decarburisation​​ Testing
  • Carburisation Testing
  • Intergranular Corrosion Testing
  • Microstructure
  • Macroetching
  • PMI (Positive Material Identification)
  • Proof Load Testing
  • Stress Rupture Testing
  • UT (Ultrasonic Testing)
  • Wedge Testing

Fastener Test Certification

  • Base Material Mill Certificates
  • UKAS approved laboratory reports
  • BS EN 10204:2004 2.1 (Certificate Of Conformity)
  • BS EN 10204:2004 3.1 (Full Chemical and Mechanical Analysis)
  • BS EN 10204:2004 3.2 (Witnessed by 3rd Party Inspectorate)
  • ITP (Inspection Test Plan)
  • PPAP (Production Part Approval Process) Level 1-3
  • ISIR (Initial Sample Inspection Report)
  • Heat Treatment Furnace Charts
  • Plating Batch Certification


Hague Fasteners often hard mark their manufactured fasteners, by request, with a fully traceable ident that allows the full traceability of each part back to the base material certification, manufacturing processes, independent testing and any other processes and documentation. This process is often built into specific project Inspection Test Plans to tie each bolt to the specific document package post installation.