Round Stock | McMaster-Carr

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25,112 Products

Raw Materials

Steel

Strong, machinable, and weldable but lacks corrosion resistance

Stainless Steel

Stainless Steel

Resists corrosion and chemicals in most environments

Plastic

A lightweight alternative to metal and glass

Aluminum

Lightweight, easy to machine, and corrosion resistant in wet environments

Brass

More machinable than copper and bronze for making nuts, hinges, and locks

Rubber

Compresses and bounces back to shape; often used for sealing, cushioning, and shock absorbing

Bronze

With better wear resistance than copper and brass, it’s used for bearings, gears, and pump parts

Copper

The most conductive of our metals, it excels in all types of electrical applications

Tungsten

Our densest metal resists wear and heat to make end mills, heat shields, electrodes, and more

Garolite

A strong, machinable alternative to metal and plastic widely used in circuit boards and gears

Foam

Pockets of air make it lighter in weight than rubber; good for packing, insulating, and sealing

Titanium

The most corrosion-resistant metal we offer, with very high strength relative to its weight

Carbon Fiber

The strongest composite we offer; comparable in strength to 6061 aluminum but lighter in weight

Nickel

An upgrade from stainless steel that withstands harsh chemicals and acids at high temperatures

Glass

Clear and highly heat and chemical resistant; often used in sights, lighting, and lab equipment

Ceramic

Hard and wear resistant, it also withstands corrosion and high temperatures

Fiberglass

A lightweight alternative to metal and wood widely used in electrical and structural applications

Wood

Commonly used to build ramps, crates, and prototypes or to make repairs

Lead

A dense insulator often used to shield against radiation and absorb sound and vibration

Graphite

Compressible or conductive for making high-temperature seals, furnace parts, and crucibles

Cobalt

Slides against other materials without wearing and sticking; resists impact and rapid temperature changes

Wax

Create seals and prototypes, lubricate tools, and polish equipment

Molybdenum

Retains its shape and strength in extreme temperatures and conducts heat and electricity

Hard Fiber

Chemically treated to be hard and dense, this is the easiest composite to machine in our offering

Mica

An electrical insulator that resists high temperatures; use in circuit breakers and heating elements

Kevlar

Super tough for protection against prolonged wear and abrasion

Niobium

Conductive, corrosion resistant, and strong, even at extremely high and low temperatures

Power Transmission

Shafts

Transmit power, motion, and speed between machine components

Fluid Handling

Tube and Tube Fittings

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

Building and Machinery Hardware

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

Slip-On Framing and Fittings

Slip-On Framing and Fittings

Insert rails into fittings and tighten screws to make guards, railings, and racks

Sealing

Backer Rods

Insert into gaps before caulking to reduce how much sealant you need and improve adhesion

Fastening and Joining

Shims

Level, align, and adjust spacing on fasteners, shafts, and machine components

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

Fabricating and Machining

Lathe Tool Blanks

Lathe Tool Blanks

Machine custom lathe tool bits

Measuring and Inspecting

Metal Detector Calibration Kits

Metal Detector Calibration Kits

Test the sensitivity of food-processing metal detectors

Facility and Grounds Maintenance

Rebar

Reinforces concrete to reduce the chance it will crack from expansion and contraction

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)