What does McMaster-Carr supply?

McMaster-Carr supplies a very wide range of industrial, commercial, and maintenance products. They are known for having one of the most complete catalogs in the industry, covering almost every MRO (Maintenance, Repair & Operations) need.

Here’s a clear breakdown of what McMaster-Carr supplies:

1. Fasteners & Hardware

• Bolts, nuts, screws, washers
• Anchors, rivets, pins
• Retaining rings, threaded rods, spacers

2. Raw Materials

• Metals (steel, aluminum, brass, copper, stainless steel)
• Plastics (nylon, PTFE, UHMW, acrylic, polycarbonate)
• Rubber and foam
• Ceramics, composites, and insulation materials

3. Tools & Equipment

• Hand tools and power tools
• Cutting tools and abrasives
• Measurement and inspection tools

4. Electrical Components

• Cables, connectors, wire
• Switches, sensors, relays
• Enclosures and electrical fittings

5. Plumbing & Fluid Control

• Pipes, valves, fittings
• Pumps, hoses, tubing
• Gaskets, seals, and fluid-handling components

6. Bearings & Power Transmission

• Bearings, bushings
• Chains, belts, sprockets, pulleys
• Gearboxes and couplings

7. Material Handling & Storage

• Carts, dollies, ladders
• Racks, bins, storage containers

8. Safety & Maintenance Supplies

• PPE (gloves, goggles, masks)
• Lockout/tagout equipment
• Cleaning and facility maintenance supplies

9. HVAC & Temperature Control

• Fans, blowers, ducting
• Heating elements and ventilation equipment

10. Laboratory Supplies

• Containers, tubing, clamps
• Basic lab equipment and instruments