Cable fastener

An integral fastener for securing an insulation-covered, electrically conductive cable to a penetratable support comprising:

• a generally U-shaped body including a pair of parallel legs joined on one end thereof by an integral cross member, and having generally parallel axes;
• said cross member being arcuate, and having a driving surface area including a pair of generally flat surface portions normal to said axes of said legs, and in axial alignment with said legs;
• said cross member having a concave, arcuate, inner surface having a breadth;
• an inwardly projecting arcuate rib integral with said cross member and extending from and across said cross member arcuate inner surface, said arcuate rib having a width smaller than said breadth of said arcuate inner surface and having a convexly curved cross-sectional configuration to be able to compress the insulation of the cable;
• each of said legs having a free end with a barb having inside, outside and end sloped faces jointly terminating in a point, said inside faces being at a greater acute angle to said axes than said outside faces;
• said legs having upper portions extending from said cross member, and lower portions extending from said upper portions to said barbs;
• junctures between said lower portions and said barbs forming locking shoulders transverse to said axes and oriented toward said upper portions;
• and junctures between said lower portions and said upper portions forming stop shoulders transverse to said axes and oriented toward said barbs;
• said stop shoulders having rounded inner edges to avoid damage to the insulation during installation.