Katsuhiko Wakabayashi
president

HARD LOCK CO., LTD. is engaged in manufacturing and sales of parts that are indispensable in today's world including the Hard Lock loosening stopping nut, which despite its almost invisible presence plays major roles in protecting safety in machinery of all kinds. The company is irrevocably committed to its production concept of "safety is power!"

Safety is Power

Both the Hard Lock loosening stopping nut and the HLB, a specialized bearing-use loosening stopping nut, apply the principle of the wedge to achieve a powerful locking energy that can resist even high levels of vibration or shock. The Hard Lock nut and the HLB also boast superior safety, easy tightening and removal and good workability, while requiring absolutely no maintenance. Moreover, these products are distinguished from those of other makers in terms of their actual record of use by industry.

The Hard Lock® Nut-Born in Japan and Growing Throughout the World

Can't we apply the principle of the wedge? The first product we developed and completed based on this theme was the Hard Lock nut.

The locking energy inherent in this nut maintains a completely fastened condition that is totally uninfluenced by external vibration or impact shock.This type of nut is being used to support safety on railways, expressways, bridges, high-rise buildings, industrial machinery, public facilities, etc., as a secure fastening nut for joining many kinds of parts.

Besides packing a powerful loosening stopping effect that no other locking nut can match, the Hard Lock nut features excellent workability, easy tightening and removal capability, and the economic benefit to the user of being totally maintenance free, as well as boasting an actual record of proven high reliability.

Born out of the pursuit of safety, the Hard Lock nut will continue to display its power to protect the safety of equipment, infrastructure and society in a broad range of applications in all sorts of unseen locations.

The HLB® -The Definitive Bearing-Use Loosening Stopping Nut

The excellent fastening strength of the HLB (Hard Lock Bearing Nut), which was developed based on the Hard Lock nut and features a powerful loosening stopping effect, has received high evaluations from all sides for bearing loosening stopping applications.

The inherent locking energy of the HLB maintains this nut in a completely fastened condition that is totally uninfluenced by external vibration or impact shock.

At present, the HLB is displaying its capabilities in a host of fields including machinery for welding, pressing, construction, transportation, lathe work, etc., as well as for automotive and shipbuilding related applications. In the future, we are confident that the HLB's strengths will also be demonstrated in the robotics and space industries too.

Possessing an immense fastening strength that no other multi-purpose nut can match, along with high workability and a low overall economic price when the cost advantages of maintenance free operation are taken into account, the HLB satisfies the demands of users and has obtained a high degree of customer trust.