The Square Wonder Head Bolt Socket Adapter, from Thermal Engineering is a unique tool that fits into 1/2 inch hex sockets and enables the technician to easily remove 5/16 inch square head locking bolts. It allows easy access to places where valve wrenches will not work or when more leverage is required. Great for Carrier, York, Addison, Rheem, Aaon, Bard, Trane and more.

COMMON APPLICATION INCLUDES:

• Refrigeration & A/C service valves 
• Condenser fan blades with bottom side and right side up hubs 
• Small and large concave blower wheels 
• Beam clamps for hanging all-thread rods 
  
• Square head lag screws 
• Pipe plugs, pump heads for gauge ports, water and pneumatic plugs, gas furnace manifold plugs 
• Adjustment screws for pressure switches 

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