The ReelFast surface-mount spacers and nuts (Type SMTSO) install permanently on printed-circuit boards in the same manner as other surface-mount components prior to the reflow solder process. Suitable for space or stack PC boards, mount boards, or attach components, they can allegedly reduce the risk of damage to boards that may occur when conventional fasteners are improperly installed with off-line equipment. Threaded types are available in sizes #2-56 through #8-32 and M2 through M4 and through-hole (non-threaded) in sizes of 0.116”, 0.143”, 3.6 mm, and 4.2 mm. Lengths range from 0.065” to 0.375” and 2 mm to 10 mm. All are installable on boards as thin as 0.06”/1.53 mm. For more details, contact Michael J. Rossi at PENNENGINEERING, Danboro, PA. (800) 237-4736.