Mounting rails

A system comprising:

• a first photovoltaic (PV) module;
• a second PV module;
• a torque tube;
• and
• a torque tube interface comprising:
• a mounting clamp coupled to the torque tube;
• and
• a mounting rail coupled to the first PV module, the second PV module, and the mounting clamp, the mounting rail comprising:
• a hooked mechanism:
• at least partially defining an aperture receiving a portion of a first module frame associated with the first PV module;
• and
• physically engaged with a surface of the first module frame to couple the first module frame to the mounting rail and to prevent the first module frame from unintentionally uncoupling from the mounting rail;
• and
• an attachment feature interfaced with a second module frame associated with the second PV module to couple the second module frame to the mounting rail.