Established in 1911, Unbrako is the world leader in advancing the technology of bolted joints and meeting the needs of industry for stronger and better performing fasteners. Unbrako products have higher tensile strength, improved fatigue resistance and extended life cycle.[Unbrako warehouse In Melbourne]
[Unbrako Warehouse In Birmingham]
[Unbrako Warehouse In Los Angeles]The famous Unbrako socket head cap screw and the self-locking Durlok fasteners are the solutions of choice for engineering applications across the globe, and hold together the Melbourne AAMI Park, Heathrow T5, Delhi Metro, to name a few.

The first development of an internal-wrenching hexagon drive of which there are records is that of circa 1911 in Pennsylvania, by the founders of Unbrako. One could say that Unbrako invented the World’s First Internal Hexagon Socket Screw.

It is today used by industries such as the automotive, power generation, petrochemical, heavy machinery, railway, mining, shipping, wind energy, infrastructure and military sectors.

Unbrako was acquired by the Deepak Fasteners Group in 2008 and has since grown multi-fold with new warehouse facilities in Birmigham (UK), Los Angeles (USA) and Brisbane (Australia). Further a $100 million has been made in the new state-of-the-art manufacturing plant in Bhopal.

Corporate Philosophy

Unbrako is dedicated to providing products that create value and fair returns, performance that is at the forefront of our industry, and conduct that reflects the highest standards of ethics and integrity.

Our vision is to continue being the world leader in designing, manufacturing and marketing of premium quality industrial fasteners, and to capture a major share of global market for industrial fasteners with an extensive and accessible worldwide marketing and distribution network.

We are committed to being a responsible employer and a good corporate citizen in the local and global communities in which we operate.

Market Segments

At Unbrako we understand that different customers have different needs, and its rarely possible to satisfy all the customers by treating them alike. Major market segments that we serve are :
  • General and Civil Engineering
  • Oil and Gas / Petrochemical
  • Truck and off-Highway
  • Aerospace
  • Agriculture
  • Automative
  • Construction
  • Electronics
  • Heavy Machinery
  • Power Generation
  • Pharmaceutical
  • Military and Defence
  • Infrastructure
  • Leisure
  • Marine
  • Motor Sport
  • Railways
  • Shipping
  • Windmills
  • Solar Energy
  • Mining


Unbrako production facilities are ISO 9001, ISO/TS 16949, ISO 14001 and BS OHSAS 18001 Certified. Our fasteners meet or exceed International Standards like DIN, ISO, ASTM, IS, BS etc. We have expertise not only in standard products, but also in made-to-order customized products.

Our Lab is NABL ISO/IEC 17025:2005 certified, which facilitates in maintaining consistent high quality. The fasteners go through strict quality checks at every workstation to achieve maximum quality control for each manufacturing process. Our inspection facilities are equipped with state-of-the-art equipment for testing of both physical and metallurgical aspects of fasteners for the most demanding industries.

State-of-the-art Equipment:

  • Tensile testing
  • Hardness testing
  • Salt spray testing
  • Digital profile analysis
  • Impact testing
  • MCD testing
  • Metallurgical Microscope with Image Analyzer
  • Chemical composition analysis (Spectrometer)
  • Torque tension and friction testing
  • X-ray analysis of coating thickness
  • Dynamic fatigue testing
  • Eddy current testing
ISO 9001:2008
For quality management of manufacturing & supply of industrial fasteners and surface coated fasteners.
ISO/TS 16949: 2009
ISO Technical Specification that defines the quality requirements for manufacturing of high - tensile fasteners.
CE Certification: BS EN 14399 & 15048
On construction product the CE marking means that performance values can be trusted.
NABL ISO/IEC 17025:2005
Specifies the general requirements for the competence of laboratories to carry out tests and/or calibrations, including sampling.
Delta Dorken
Deepak Fasteners is a licensed applicator of Delta Dorken surface coating.
Deepak Fasteners is a licensed applicator of Geomet surface coating.
Unbrako Wiscoat
The Unbrako Wiscoat Corrosion Protection System using Polyamide 11 ESY Blue 7265 with Primgreen LAT 12035 Primer meets the requirements set out in WRC assessment schedule PT/362/0415-AS.