UNBRAKO® is the world's best-known and best-performing socket screw product.

The Unbrako Engineered Fasteners business coordinates on a worldwide basis the manufacture and distribution of:

	UNBRAKO® socket screws
	FLEXLOC® all-metal locknuts
	DURLOK® vibration resistant nuts and bolts

In addition, Unbrako manufacturing facilities utilize their unparalleled expertise and capabilities to offer special custom Engineered Specials to its OEM customer base.

History
Synonymous with the history of SPS Technologies, the Unbrako brand is over 80 years old and remains the socket screw by which all others are measured. Developed in the 1920s, it rapidly became the socket screw of choice for engineers in the US and Britain. After World War II, the product spread to all worldwide markets and today is recognized as the brand and performance leader in over 25 industrialized countries.

Key features and benefits

Feature	Benefit
Tensile strength of 190,000 psi / 1300 MPa exceeds international ANSI and ISO standards	Permits one of the best clamping loads available in similar products
A series of unique physical stress-relieving features on every bolt	Ensures one of the greatest fatigue life performances for this grade of product
Unique E-CODE® traceability system	Traceability on every bolt

Applications
UNBRAKO socket screws, the most widely recognized fastener brand name in the world, are used in machine tools, tools and dies, earth moving and mining machinery, and a wide range of industrial and engineering applications. Sold through technically qualified stocking distributors, UNBRAKO socket screws are high-strength fasteners certified by Unbrako to meet or exceed industry standards. For example, UNBRAKO socket head cap screws are 10,000 psi (100 Mpa) above industry standards and most competitive products.

Innovation
Unbrako, the world leader in supplying high-strength socket screws, continues to innovate. The most recent example is the addition of E-CODE, the unique "traceability on the head system." Traditional traceability ends with the packaging label, but Unbrako's E-CODE has the individual lot traceability stamped on the head.

Contact us

SPS Technologies Unbrako Engineered Fasteners 4444 Lee Road Cleveland, Ohio 44128-2902 Phone: 216-581-3000 Fax: 800-225-5777 Email: unbrakosales@unbrako.com	SPS International Ltd. Shannon Industrial Estate Shannon, County Clare Ireland Phone: 353-61-716-500 Fax: 353-61-716-584 Email: unbrako.europe@unbrako.com
Unbrako Pty. Limited Norcal Road, Nunawading Victoria 3131 Australia Phone: 61-3-9878-3055 Fax: 61-3-9878-6839 Email: info@spstech.com.au

Registered Trademark Acknowledgements
UNBRAKO, FLEXLOC, DURLOK, TRU-FLEX and E-CODE are registered trademarks
of SPS Technologies