Vibration-resistant nuts

  • 03-May-2010 02:30 EDT
Hardlock_nut.jpg

Hard Lock Nuts from Hard Lock Industries are designed to withstand loosening from vibration, thus ensuring a secure connection for enhanced safety and reduced maintenance and inspection costs. A wedge principle creates a strong self-locking force; a small curve in the sliding part of the convex top of the lower nut acts as the wedge. When the concave upper nut is tightened, the effect is similar to that of a hammer driving in a wedge. The nuts have passed the American Vibration and Impact Test NAS 3350/NAS 3354 and retained their grip longer than competitive versions in Junker Horizontal Screw Looseness Tests. Even when loosened by 45º, more than half of the tightening torque remained. Vibration tests performed in this condition revealed no loosening, indicating that a self-locking effect is present even if the nut is not fully tightened. The two-piece nut is installed with a wrench and is reusable since there is no abrasion between the concave and convex.

Author:
Sector:
Topic:
Share
HTML for Linking to Page
Page URL
Grade
Rate It
3.67 Avg. Rating

Read More Articles On

2017-02-20
Researchers from Purdue University are studying the fundamental mechanisms behind a method that uses electrical fields to enhance ceramics-sintering processing, which could aid R&D of rechargeable lithium-ion batteries and fuel cells. The research also could shed light on a phenomenon called electromigration, which can affect the performance of electronic devices.
2016-12-20
Industrial aluminum slabs are typically produced by blending small amounts of copper or manganese in a reservoir of molten aluminum that is rapidly cooled, a process known as direct-chill casting. Variations in the way these elements solidify can yield uneven results that weaken the final product.
2017-05-05
Improvements to Airbus A320 passenger air nozzles could potentially contribute to program-wide benefits.
2017-05-05
NASA has selected proposals for the creation of two multi-disciplinary, university-led Space Technology Research Institutes (STRIs) that will focus on the development of technologies critical to extending human presence deeper into our solar system. The new STRIs will bring together researchers from various disciplines and organizations to collaborate on the advancement of cutting-edge technologies in bio-manufacturing and space infrastructure.

Related Items

Training / Education
2013-04-09
Training / Education
2017-10-31
Training / Education
2017-11-01
Training / Education
2017-10-23
Training / Education
2013-04-09
Technical Paper / Journal Article
2008-09-16
Training / Education
2013-04-09
Training / Education
2013-04-09