. Bracket screw. COUPE. A screw that is used to secure the ABS Hydraulic Control Unit to it's mounting point. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the ABS Hydraulic Pump to it's mounting point. ABS Control Module Screw. ABS Modulator Bolt. Control Module. control unit. Hydraulic Assembly. Modulator. Pump and Motor Assembly. Bracket. HEXAGON - HEAD.