RAF Electronic Hardware introduces its male-female stacking spacers that come in round and hexagonal profiles. Manufactured for PC/104 and PC/104-plus embedded applications, they are available in nylon and aluminum. By using these stacking spacers, circuit boards are spaced exactly 0.6" apart to build structurally secure module stacks. The standalone stacks can be used like compact bus boards, but without the need for backplanes or bird cages. These spacers are 3/16" in diameter, have a 3/16" long 4-40 male thread on one end, accept a 4-40 thread screw on the other end, and they have available mating screws and hex nuts in both nylon and aluminum materials.
RAF Electronic Hardware