Square Steel Tube | McMaster-Carr

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System of Measurement

Outside Width

Outside Height

Shape

Wall Thickness

Length

Material

Inside Width

Inside Height

Post Width

Thickness

Specifications Met

Rail Style

Bracket Type

90° Angle with Threaded Stud

Finish

Bolt-Together Framing Component

Width

Yield Strength

Strut Channel Framing Component

Channel

Conduit Connector

Corner Bracket

Offset-Surface Bracket

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

2B999

9A991

EAR99

DFARS Specialty Metals

Strut Channel Type

Steel Grade

1005-1026 Low-Carbon Steel

1009 Low-Carbon Steel

1010 Low-Carbon Steel

A500 Low-Carbon Steel

A513 Low-Carbon Steel

Fabrication

540 Products

Raw Materials

Steel

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

77 products

Building and Machinery Hardware

Weld-Together Framing and Fittings

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

18 products

Bolt-Together Framing Rails

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

36 products

Bolt-Together Framing Feet

Stabilize bolt-together framing structures against floors, walls, and ceilings

5 products

Bolt-Together Framing Structural Brackets

Connect the surfaces and corners of bolt-together rails to build guards, tables, and racks

1 product

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

363 products

Press-Fit Framing and Fittings

Set up temporary partitions, guards, and displays using only a hammer

7 products

Containers, Storage, and Furniture

Stacking Caps and Targets

Turn the ends of posts into stackable shelving and rack systems

6 products

Fabricating and Machining

Strut Channel Cutters

Shear strut channel down to size using a die instead of a blade for safer, cleaner cuts

1 product

Electrical

Electrical Enclosure Mounting Channels

Position components inside electrical enclosures without drilling holes, which can leak

9 products