Structural Square Tubing | McMaster-Carr

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System of Measurement

Rail Height

Material

Stainless Steel

T-Slotted Framing Rail Profile

Attribute

Length

Color

Bracket Type

Adjustable Angle

Thread Size

Finish

Aluminum Coated

Strut Channel Type

Extra-Low Profile

Rail Width

REACH

RoHS

Compliant with Exemptions

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

Single Rail Profile Style

Angled One Slot

Angled Two Slot

Corner Two Slot

Half Round One Slot

Inline Two Slot

Low Profile One Slot

Radius Two Slot

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Shape

Rectangular Tube

Framing Type

Locking Slotted

Channel Height

13/16" to 1 5/8"

13/16" to 3 1/4"

1 5/8" to 3 1/4"

2 7/16" to 3 1/4"

T-Slotted Framing Nut Type

Easy-Slide Spring Tab

Hammer with Stud

Self-Aligning Spring Tab

Self-Aligning Spring-Loaded Ball

Self-Aligning with Handle

Set Screw and Spring-Loaded Ball

Single with Threadlocker

Spring-Loaded Ball

Mounting Fastener Thread Size

Channel Width

Locking-Slotted Framing Component

Mounting Bracket

Surface Bracket

How can we improve?

4,675 Products

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

Strut Channel Framing and Fittings

Strut Channel Framing and Fittings

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

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

Press-Fit Framing Rails

Press-Fit Framing Rails

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

Press-Fit Framing Braces

Press-Fit Framing Braces

Reinforce the corners of press-fit structures

Weld-Together Framing and Fittings

Weld-Together Framing and Fittings

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

Locking-Slotted Framing and Fittings

Locking-Slotted Framing and Fittings

Make platforms, bases, and other structures that stand up to more movement than T-slotted framing

Push-to-Close Latches

Push-to-Close Latches

Automatically hold doors shut when you push them closed

Raw Materials

Fiberglass

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

Steel

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

Aluminum

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

Brass

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

Measuring and Inspecting

Stroboscopes

Shine a bright flashing light at moving belts and pulleys to measure speed and detect wear

Fabricating and Machining

Strut Channel Cutters

Strut Channel Cutters

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

Fastening and Joining

Weld Nuts

Weld to metal surfaces to add permanent threads

Electrical Power, Networking, and Controlling

Emergency Stop Switches

Emergency Stop Switches

Cut power to equipment during emergencies

Push-Button Switches

Push-Button Switches

Our most common switch type actuates circuits with the push of a button

Material Handling

Pipe Supports

Brace pipe, tube, and conduit that needs to be routed between studs or elevated off the floor

Trolleys

Transport hook-mount hoists along a beam for lifting and moving loads

Containers, Storage, and Furniture

Stacking Caps and Targets

Stacking Caps and Targets

Turn the ends of posts into stackable shelving and rack systems

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