december 03, 2001 burke jardine michael johnson matthew dalebout self-locking threaded fasteners
Post on 18-Dec-2015
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TRANSCRIPT
Objective
To understand how self-locking fasteners work, what they are used for and where
to find them.
Self-Locking Threaded Fasteners Outline
Conventional Nut vs Self-Locking Threaded Fasteners Comparison
AdvantagesApplicationsVendors and Where to Find Them
Standard Nut vs Self Locking Threaded
Fastener Comparison:
Standard Nuts
Self Locking Threaded Fasteners
Problems with Standard Nuts
Vibration
Thermal Effects
Fatigue
Stress Distribution
Strain Deformation
Insufficient Tightening Torque
Frequent Servicing/High Use
Accidental Disassembly Due to:
What are self-locking fasteners?
Self Locking Threaded Fasteners Prevent Accidental Disassembly by:
• Preventing Fatigue
• Resisting Vibration
• Reducing Stress Concentration
Types of Self-Locking Fasteners
• Mechanical o Increase contact friction
o Increase interference fitCompressionModified threads
• Chemicalo Anaerobic
Additional Information
www.parker.com/stratoflex/products/locking.asp
www.boltscience.com/pages/vibloose.htm
www.longlok.com
www.jlanfranco.com/jl_products.php