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Latest update: 2016-11-30 17:16:45.0

HARDLOCK INDUSTRY Co., Ltd.

Locking nut manufacturer with global presence now targeting medical and aerospace applications

Our company developed a locking nut that uses the wedge principle to apply force perpendicular to the bolt axis and keep it from vibrating loose. These nuts are being used around the world in key applications such as railroads where safety is given the highest priority. We have sales agencies in Korea, China, Taiwan, Australia, the UK, the USA, Brazil and Thailand.

Experience
overseas
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[Product description] Screw fasteners typically begin to loosen, eventually, when repeated loads are applied in a direction perpendicular to the bolt axis. Our Hard Lock Nut has finally resolved this issue. This is the first nut with a convex protrusion, onto which is placed a second nut with a matching but slightly eccentric concavity. These can be installed in the same manner as ordinary nuts. The second nut, however, creates a wedge effect when tightened that totally eliminates any play. These nuts generate powerful forces perpendicular to the bolt axis and produce an incomparable locking effect that can withstand any type of vibration or impact. They can be manufactured from a wide variety of materials and can be reused repeatedly, resulting in a significant reduction of overall job costs. [Authorization/Certification] JIS Q 9100:2009 certification acquired ISO 9001:2008 certification acquired [Intellectual property] Hard Lock Nut (Patent No. 4495849), among many others [Major facilities and equipment] 70 dedicated in-house machining tools, 6 NC lathes, 1 robot

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