Square Bars | McMaster-Carr

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Rectangular Tube

Material

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Tolerance Rating

Color

Fluorescent Amber

Fluorescent Blue

Fluorescent Green

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Fabrication

Hardness Rating

Outside Width

Appearance

Specifications Met

CPSC Compliant 16 CFR 1201 Category I and II

Federal Specification

Hardness

Outside Height

Steel Grade

1005-1026 Low-Carbon Steel

1006 Low-Carbon Steel

1006-1026 Low-Carbon Steel

1008 Low-Carbon Steel

1008-1010 Low-Carbon Steel

1010 Low-Carbon Steel

1010-1018 Low-Carbon Steel

1018 Low-Carbon Steel

A36 Low-Carbon Steel

Backing Type

DFARS Specialty Metals

Certificate Type

Material Certificate with Traceable Lot Number

Material Certificate with Traceable Lot Number and Cure Date

Material Certificate with Traceable Lot Number and Test Report

Wall Thickness

RoHS

Compliant with Exemptions

REACH

Maximum Temperature

Less than 500° F

500° F to 999° F

1,000° F to 1,999° F

2,000° F to 2,999° F

3,000° F or greater

Performance

Chemical Resistant

Corrosion Resistant

Easy Thermoform

Electrically Insulating

Erosion Resistant

High Temperature

Impact Resistant

Metal Detectable

Export Control Classification Number (ECCN)

How can we improve?

12,228 Products

Raw Materials

Steel

Strong, machinable, and weldable—all with material certificates for traceability

Stainless Steel

Stainless Steel

Resists corrosion and chemicals in most environments—all with material certificates for traceability

Aluminum

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

Plastic

A lightweight alternative to metal and glass

Brass

More machinable than copper and bronze—all with material certificates for traceability

Copper

Our most conductive metal for electrical applications—all with material certificates for traceability

Rubber

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

Bronze

Better wear resistance than copper and brass—all with material certificates for traceability

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—all with material certificates for traceability

Garolite

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

Tungsten

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

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

Nickel

An upgrade from stainless steel to withstand harsh chemicals and acids—all with material certificates for traceability

Cobalt

Resists impact and rapid temperature changes—all with material certificates for traceability

Carbon Fiber

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

Glass

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

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 and corrosion resistant even at extreme temperatures—all with material certificates for traceability

Zinc

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

Aramid

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

Carbon

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

Graphite

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

Hard Fiber

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

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

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

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.)