Plastic Squares | McMaster-Carr

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Square Head Material

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5,029 Products

Raw Materials

Plastic

A lightweight alternative to metal and glass

Foam

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

Fiberglass

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

Rubber

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

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

Hard Fiber

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

Aluminum

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

Aramid

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

Measuring and Inspecting

Squares

Check 90° angles during layout work with combination, angle, or pipefitters' squares

Protractors

Set bevels and measure angles with everything from pocket-size to long-arm protractors

Levels

Ensure surfaces are completely horizontal or vertical

Fastening and Joining

Shims

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

Shim Stock

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

Machine Key Stock

Machine Key Stock

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

Tape

Bind, seal, and mark surfaces

Fabricating and Machining

Lathe Tool Blanks

Lathe Tool Blanks

Machine custom lathe tool bits

Prototyping Foam

Prototyping Foam

Carve, mill, or sand into lightweight parts for testing

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