Abstract: A fastening system includes a tubular mounting post engageable with a first structural member. The mounting post has an opened first end, a second end, and a sidewall extending therebetween and defining an interior channel. A retainer is held within the interior channel against movement relative thereto and has a central opening sized smaller than the interior channel of the mounting post at the first end of the mounting post. A fastener is enageable with a second structural member and has a shaft sized in cross-section smaller than the interior channel of the mounting post at least at the first end thereof and larger than the central opening of the retainer such that upon insertion of the shaft into the central opening of the retainer the retainer fastenably secures the fastener to the mounting post to thereby fasten the second structural member to the first structural member.