Gardner Bender 3/8-in Plastic Cable Clips Cable Staple (15-Pack) in the Cable Staples & Spacers department at Lowes.com
RG-6 (7MM) PLASTIC CABLE CLIP WITH #8 X 1" SCREW (BLACK) | Allied Bolt Products LLC
Cable clips with screw for round lead – Tillex
Amazon.com: THE CIMPLE CO - Single Coaxial Cable Clips, Cat6, Electrical Wire Cable Clip, 1/4 in (6 mm) Screw Clip and Fastener, Black (100 Pieces per Bag) : Electronics