Abstract: A snap tight system including at least one fastening device is used for joining structural members to form an architectural assembly. The snap tight system includes a splice assembly having a first splice portion and a second splice portion. Further, the snap tight system includes a first structural member having one or more first openings, and a second structural member having one or more second openings. Further still, the snap tight system includes the at least one fastening device having a housing with a spring that actuates a first pin and a second pin. The fastening device joins the first structural member to the second structural member, such that the first pin extends through the first splice portion and the one or more first openings and, the second pin extends through the second splice portion and the one or more second openings so as to form the architectural assembly.