Top Collar Lock Nuts combine reliable self-clinching mounting with a reusable clear nylon thread locking element. All self-clinching fasteners install into a round hole that may be punched or drilled in ductile materials. They provide a permanently attached fastener, which becomes an integral part of the panel or frame and eliminates the problems associated with loose hardware. Self-Clinching fasteners provide added value by speeding initial assembly as well as servicing in the field, keeping costs to a minimum.