Abstract: The present invention relates generally to Vilas bolt, nut, stud, screw, and sleeve. More particularly, the invention encompasses a Vilas screw having a first set of threads at one end, such as, a wood screw type threads, and a second set of threads at the opposite end, such as, a machine screw type threads, and with a flange nut between the two different sets of threads. The present invention is also directed to a Vilas screw having a first set of threads at one end and a second set of threads at the opposite end where the second set of threads are inside a blind hole and with a flange nut on the outer surface of the shaft. The invention also encompasses a Vilas sleeve, a Vilas nut, a Vilas screw, a Vilas stud, a Vilas bolt, and combinations thereof, and wherein each has mating capabilities.