Richland Center Foundry Manufacturers of grey and ductile iron castings.

Ricman Manufacturing, Inc. Offering computer aided, precision machining services.

Rima Manufacturing Company. Manufacturer of precision machined metal products.

Rimnetics, Inc. Rapid prototyping and injection molding.

Rishi International Manufactures wide selection of nuts, washers, bolts, studs, rivets, screws, and nails in self coloured and galvanized finishes. Located in India with offices in Latin America and the UK.

Rivfast Ltd UK. Manufactures wide selection of rivets and eyelets, sells setting presses and tooling, and offers subcontract assembly services.

RLT Industries. Global sourcing for metal, plastic, and rubber components.

RMG Foundry. Produces all grades of gray and ductile iron castings.

Roberts Automatic Products, Inc. Machined products manufacturer. Areas include CNC turning and machining, screw machine products, and drilling, tapping, thread rolling, and broaching.

Robinson Foundry, Inc. Castings include disamatic green sand aluminum or iron, and lost foam iron.

Rockford Products. Manufactures battery chargers.

Rod-And-Bar.com Sells various rod and bar products in stainless steel, carbon, metal alloy, and aluminum. Also offers grinding, polishing, straightening, and other metal processing services.

Roncelli Plastics. Specialists in plastic and nonmetallic machining.

Ross Design & Engineering. Manufactures stabilizing and spring-loaded casters and metal stamping equipment.

Royal Precision Products. Contract manufacturing of close tolerance precision parts for medical, aerospace, defense, semiconductor, and automotive industries.

Royer Foundry Systems. Manufactures foundry equipment and systems.

RRL Steels. Manufactures manganese steel castings including track pads, tooth points, and adaptors.

Ryan Machine Shop. Prototype and production machine shop services and machine shop parts.

S&S Tool Inc. Manufactures wide range of precision parts and tooling for diversified customer base. Includes products for automotive, bicycle, canmaking, exercise equipment, machine tool, and medical and surgical device markets.

Saegertown Manufacturing Corporation. Utilizes cold forming, heading, and forging to manufacture an array of parts including air bag components and gear blanks.