Rail kits

A rail kit, comprising:

• a bracket assembly that is attachable to opposing columns of a device rack and that supports a number of rails;
• wherein the bracket assembly includes a front attachment portion that includes an alignment pin that is to couple with a mounting hole of the device rack, and
• the alignment pin includes:
• a first coupler that has a cross-sectional exterior profile that is circular;
• and
• a second coupler that:
• includes four protruding portions that extend from a base portion, are physically separated from one another, and are radially outward of the first coupler on at least a top, bottom, left, and right side thereof, respectively,
• is horizontally slidable relative to the first coupler between an extended position and a retracted position, and
• is spring biased toward the extended position.

A rail kit, comprising:

• a bracket assembly that is attachable to opposing columns of a device rack and that supports a number of rails;
• wherein the bracket assembly includes a front attachment portion that includes an alignment pin that is to couple with a mounting hole of the device rack, and
• the alignment pin includes:
• a first coupler that has a cross-sectional exterior profile that is circular and that surrounds a hollow region along an axis thereof;
• a second coupler that:
• is slidable horizontally relative to the first coupler between an extended position and a retracted position,
• is spring biased toward the extended position, and
• includes a first portion and a second portion that are concave and that are on opposing sides of the first coupler, respectively, and that are configured such that a width of the first portion equals a width of the second portion and equals a distance between an apex of the first portion and an apex of the second portion;
• and
• a locking hook that:
• extends horizontally from within the first coupler to beyond a front of the first coupler via the hollow region,
• is moveable between a locked position and an unlocked position,
• is spring biased toward the locked position, and
• is to lock the bracket assembly to the device rack when the alignment pin is coupled with the mounting hole and the locking hook is in the locked position.