Wrench head for a universal wrench

A method for operating a universal wrench, the method comprising:

• aligning a wrench head of the universal wrench with a fastener to be operated upon, wherein the wrench head comprises:
• a housing having an upper portion and a lower portion;
• a base plate positioned inside the housing towards the upper portion of the housing, the base plate having a top surface and a bottom surface, wherein the base plate comprises:
• a plurality of compartments defined at the bottom surface of the base plate;
• a plurality of push-rods positioned inside the housing, each of the plurality of push-rods having a proximal end towards the upper portion of the housing and a distal end towards the lower portion of the housing, wherein each of plurality of push-rods is movable between a default position and a retracted position;
• and
• a resilient member positioned inside the housing and between the base plate and the distal end of each of the plurality of push-rods,
• wherein the resilient member is configured to bias each of plurality of push-rods is in the default position, and
• wherein in the retracted position, the proximal end of each of the plurality of push-rods is pushed against the resilient member and received along with a portion of the resilient member within a compartment of the plurality of compartments defined at the bottom surface of the base plate;
• wherein aligning the wrench head with the fastener comprises:
• contacting a distal end of the each of a set of the plurality of push-rods with a top surface of the fastener, when each of the of plurality of push-rods is in the default position;
• pressing the wrench head against the top surface of the fastener to cause the set of the plurality of push-rods to move from the default position to the retracted position and receive the fastener in a region created upon moving of the set of the plurality of push-rods from the default position to the retracted position;
• and
• applying a torque to the wrench head to cause rotation of the wrench head and thereby the fastener.