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DeltaBolt® high performance lockbolt system

High performance pin and collar fastening system designed and developed using 3D FEM modelling
Superior two part fastening system with unique design but universal applications using industry standard tools.

Innovation - that's the difference

DeltaBolt® - stronger and safer

Universal system - added strength and safety
DeltaBolt pins and collars are the ideal solution for all applications requiring safe and secure fastening that exceeds expectations.
Whether you require safety critical connections in the automotive industry, vibration resistance in agricultural equipment or a greater factor of safety in commercial vehicle design, DeltaBolt provides you with a fastening solution which is unequalled.

DeltaBolt® - better by design

Superior strength

The increased performance predicted by FEM model simulation has been confirmed through extensive validation tests.

Δ Installed tensile strength
  • >50% more than industry standard
Δ Permanent clamp force applied to workpiece
  • >20% more than industry standard

Open the pdf below for more detailed product information on DeltaBolt high performance pins and collars.

DeltaBolt high performance lockbolt system

DeltaBolt® - Δ is the mark of quality

  • DeltaBolt pins and collars feature Delta Δ marking that ensures DeltaBolt quality.
  • Simple visual inspection before and after setting ensure safe and correct installation today and in the future.
  • DeltaBolt is manufactured in accordance with the requirements of DVS-EFB Merkblatt 3435-1 as Grade 8.8 bolts to DIN EN ISO 898-1.
  • Manufacturing processes are approved to the international automotive standard ISO/TS 16949.


DeltaBolt® - innovation – that’s the difference Δ

Practical innovation

  • We combined our manufacturing expertise with state-of-the-art computer simulation to create a superior pin and collar fastening system.
  • Every aspect of our well-established TIFAS LockBolt pin and collar system was analysed and optimised to produce DeltaBolt.
  • The many benefits of DeltaBolt are available on existing applications or in particular for new applications where higher performance is demanded.

DeltaBolt® - benefits for you



  • Higher strength than other lockbolt systems
  • Simple and fast installation
  • Increased strength offers an additional factor of  safety for existing applications
  • Can be installed using industry standard tooling
  • Manufactured in accordance with international  standards for industrial fasteners
  • No new tooling required for existing applications
  • Thoroughly tested and independantly validated for guaranteed installed performance and absolute vibration resistance
  • Wider than standard grip range with flanged collar increases versatility and reduces inventory
  • Only simple operator training required

No maintenance

Cost saving

  • After installation collar is permanently cold formed on the pin locking grooves
  • Cost effective alternative to welding or bolting on high strength applications 
  • Grooves are annular so collar cannot un-wind
  • Fast and efficient installation – no rework required
  • Permanent clamp is applied after installation and eliminates the need to check for loss of prestress as required for nuts and bolts
  • No added tooling cost on existing applications
  • Absolute vibration resistance independently verified and guaranteed
  • Visual inspection eliminates the need for expensive procedures like x-ray testing of welds

Time saving


  • Requires only simple hole preparation
  • Designed, manufactured and tested in accordance with international standards
  • No time spent reworking after installation to repair heat damage
  • Manufacturing processes approved to the international automotive standard ISO/TS 16949
  • Can be used on pre-finished materials – no need to touch up damaged surfaces
  • Quality products ensured by the DeltaBolt Δ identification mark on pins and collars
  • Visual inspection - quick and effective control of the installation process
  • Efficient method of joining dissimilar materials
  • Identification marks are visible even after installation

DeltaBolt® - Video

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