Junctions of metal for pipes; Metal couplings for use with hydraulic and pneumatic systems; Metal expanding sleeves for affixing screws; Metal fasteners, namely, bolts, nails, rivets, screws; Metal hardware, namely, nuts; Metal manifolds for use with hydraulic and pneumatic systems; Metal pipe connectors; Metal pipe couplings and joints; Metal pipe fittings for compressed air pipes; Metal plugs; Metal thread adapters for use with hydraulic and pneumatic systems; Metal threaded fasteners; Meta...