Profile: Marshall E. Campbell Co., is a distributor of electrical supplies, industrial supplies, hydraulics and pneumatics, abrasives, fasteners, safety, & contract hardware. Our products include conduit fittings, cutting tools, hand tools, fuses, motor control, material handling, power tools and wiring devices. Our fasteners include anchors, cap screws, carriage bolts, dowel pins, drywall screws, elevator bolts, jam screws, machine screws, pressure plugs, nuts, sheet metal screws and spring steel fasteners.