Multiple brands offer 3/16-inch hard line clamps in 6-packs for automotive applications like brake, fuel, and electrical lines. They are available in various styles and materials, such as billet aluminum and stainless steel.
Aluminum clamps
Redhorse Hard Line Bracket/Clamps (6-pack)
: This kit includes six anodized black billet aluminum clamps and mounting hardware.
Material: Anodized black aluminum
Features: Holds 3/16-inch outside diameter hard lines.