Square Stock | McMaster-Carr

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DFARS Specialty Metals

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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12,623 Products

Raw Materials

Steel

Strong, machinable, and weldable but lacks corrosion resistance

Aluminum

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

Stainless Steel

Stainless Steel

Resists corrosion and chemicals in most environments

Plastic

A lightweight alternative to metal and glass

Brass

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

Titanium

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

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

Foam

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

Garolite

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

Carbon Fiber

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

Fiberglass

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

Ceramic

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

Tungsten

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

Aramid

Strong, lightweight, and an excellent thermal insulator; also known as Nomex

Glass

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

Nickel

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

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

Carbon

An electrical conductor that’s often used in electronics and sensors

Zinc

Draws corrosion away from nearby metal; an alternative to lead for sound barriers and vibration dampers

Tin

Soft and malleable for forming gaskets and filters; also mixes with other metals to make solder

Lead

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

Niobium

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

Building and Machinery Hardware

Bolt-Together Framing and Fittings

Bolt-Together Framing and Fittings

Fasten through equally spaced holes to build and adjust guards, tables, and racks

Weld-Together Framing and Fittings

Weld-Together Framing and Fittings

Permanently join rails and fittings to assemble heavy duty racks, shelving, and work tables

Fabricating and Machining

Lathe Tool Blanks

Lathe Tool Blanks

Machine custom lathe tool bits

Dovetail Blanks

Dovetail Blanks

Machine a blank workpiece with precut dovetails and locating slots for easy setup

Prototyping Foam

Prototyping Foam

Carve, mill, or sand into lightweight parts for testing

Fastening and Joining

Shim Stock

Cut into custom shapes for leveling and aligning fasteners, machinery components, and more

Shims

Align and space components on shafts, or level machinery, cabinets, and doors

Machine Key Stock

Machine Key Stock

Cut a custom length to transfer torque from shafts to components such as gears and sprockets

Sealing

Gasket Material

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

Electrical

Thermal Interface Material

Thermal Interface Material

Dissipate heat away from electronic components

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