Pin and Collar Fastening System

TIFAS® Lockbolts

A two-piece pin and collar fastening system for structural connections that are absolutely vibration proof with high shear, tensile and clamp strength. Quality assured: ISO/TS 16949 approved manufacture in the West Midlands of England.

Standard Lockbolts

High performance pin and collar fastening system.

Product Information

The two part system comprises a pin with defined breakneck groove and a collar.

The workpiece must be accessible from both sides.

Installation i.e. swaging of collar onto pin is achieved using power tools.

TIFAS® Lockbolt Advantages

Open the PDFs below for more detailed product information.

TIFAS® LockBolt Pin and Collar Fastening System Metric (PDF 2Mb)

TIFAS® LockBolt Pin and Collar Fastening System Imperial (PDF 2Mb)


TIFAS® Lockbolt Installation Procedure

TIOS® EL18 battery-operated installation tool


Installation of lockbolt pins and collars is simple, quiet and requires no special operator skill.

The installation procedure has 4 basic steps:

  1. Pin is inserted in the prepared hole and collar is placed over the locking grooves.
  2. The nose of the tool is placed over the pin tail and the trigger is pressed.
  3. The tool jaws pull on the pull grooves clamping the joint tight before the collar is swaged into the locking grooves.
  4. The pin tail breaks at a predetermined load leaving the finished joint.