Abstract: A bus coupling for connection to bus in an electrical system including a coupling having a substantially cylindrical outer surface and an inner surface for receiving the bus. A portion of the outer surface of the coupling and the bus are compressed by a swaging tool until they plastically deform radially inwardly to form a swaged connection. An anti-oxidant composition may be applied between the coupling and the bus, with an annular groove in the inner surface of the coupling accumulating any of the excess composition. A counterbore on the inner surface at one end of the coupling may be filled with a sealing material to prevent water accumulation that could weaken the connection in freezing climates. The one end of the coupling also has a smooth, curved surface to reduce the adverse consequences normally associated with the corona effect.

Abstract: A panel fastener having a turning knob which is attached to a stud in a positive locking relationship. The stud has a shaft with an enlarged stud head and a deformable lip at one end and a threaded region at the opposite end. The hollow cylindrical knob has an interior annular ridge extending radially inwardly from the inside surface of the knob thereby defining an opening through the knob. The stud extends through the ridge opening and the stud head rests on one surface of the ridge and the lip extends from the stud head through the ridge opening and is deformed to engage the ridge to permanently attach the knob to the stud. The stud head has protrusions extending radially from its circumference which positively engage a similarly shaped recess in the knob. The knob is made of a composite material that resists cracking during assembly and reduces corrosion during use.