Vertical Toothblock Pin for Configurable Block Assemblies

A configurable block assembly comprising:

• a block body including a top surface, a bottom surface, a front surface and a rear surface, the block body including a variable width pin slot formed at least partially along the top surface between the front surface and the rear surface and extending through an interior of the block body to the bottom surface, the variable width pin slot including a first region of a first width and a second region of a second width that includes an arrangement of teeth that extend inwardly to opposing sides of the variable width pin slot;
• and
• a toothed washer dimensioned to coincide with the second region of the variable width pin slot, the toothed washer including an outer surface and an inner surface, the inner surface defined by an aperture, the outer surface including a tooth configuration on opposite sides of the outer surface configured to engage with the arrangement of teeth of the variable width pin slot.