March 27, 2008 -
Available in class 8 zinc-plated steel and AISI-304 stainless steel, Hardlock Nuts are reusable without loss of locking ability and require only spanner for installation. Upper nut is threaded down screw until machined recess comes into contact with tapered cone of lower nut. Lower nut is held stationary, either by being seated or with spanner, and locking torque between two nuts is induced. Held stationary by 3 locking forces, nuts offer resistance to vibration.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Hardlock locking nuts from Rino Industries Ltd of Chesterfield are now available in their new edition mechanical drive component's catalogue.
They are available both in class 8 zinc plated steel and AISI-304 (A2-50) stainless steel, depending on the application. They are a versatile nut the company states, as they do not have to be seated, they are re-usable with loss of ability and only a spanner is required for installation.
The upper nut is threaded down the screw until the machined recess comes into contact with the tapered cone (which is off-set) of the lower nut. The lower nut is held stationary, either by being seated or held stationary with a spanner if not seated. A locking torque between the two nuts is induced. Not only is this a vertical force (up and down the thread) installation torque, but also a horizontal force is induced by the off-set cone of the lower nut. The lower nut is pulled into the screw threads in one direction, while the upper nut is pulled in the opposite direction. Hardlock is thus held stationary by three locking forces.
Repeated usage does not reduce the locking ability of Hardlock nuts, nor will there be undue wear on either of the nuts or the thread of the screw because of repeated removals and subsequent installations.
In vibration tests carried out by independent and recognised testing authorities, the Hardlock nut has shown itself to be superior in it's resistance of vibration to all the other normal thread locking devices. Company Information: Name: Rino Industries Ltd. Address: Foxwood Industrial Park City: Chesterfield ZIP: S41 9RN Country: United Kingdom Phone: 01246 261300 FAX: 01246 261688 http://www.rino.co.uk
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