Plastic Squares | McMaster-Carr

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Material

Material Grade

System of Measurement

Thickness

Width

Shape

Length

Color

Backing Type

Performance

Electrically Insulating

Texture

Hardness Rating

Hardness

Maximum Temperature

For Use Outdoors

RoHS

REACH

Export Control Classification Number (ECCN)

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

Yes

DFARS Specialty Metals

Square Head Material

Head Material

Finish

For Use On

Housing Material

Face Material

8,851 Products

Measuring and Inspecting

Squares

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

8 products

Protractors

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

25 products

Levels

Ensure surfaces are completely horizontal or vertical

5 products

Raw Materials

Plastic

A lightweight alternative to metal and glass

2,566 products

Rubber

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

4,307 products

Garolite

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

869 products

Foam

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

573 products

Fiberglass

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

187 products

Carbon Fiber

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

79 products

Aramid

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

10 products

Hard Fiber

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

62 products

Aluminum

Lightweight, easy to machine, and corrosion resistant—all with material certificates for traceability

12 products

Mica

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

73 products

Fastening and Joining

Machine Key Stock

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

2 products

Shims

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

9 products

Shim Stock

Cut into custom shapes to align, space, and level components on dies, presses, and machinery

27 products

Mounting Tape

Mount everything from signs and panels to carpet and padding

6 products

Masking Tape

Temporarily join or protect surfaces

7 products

Fabricating and Machining

Lathe Tool Blanks

Machine custom lathe tool bits

11 products

Toggle Clamps

Lock workpieces onto worktables or objects

5 products

Prototyping Foam

Carve, mill, or sand into lightweight parts for testing

8 products