Square Tubing Brackets | McMaster-Carr

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2,984 Products

Bolt-Together Framing and Fittings

Aluminum Bolt-Together Framing and Fittings

Half the weight of steel, this aluminum framing resists corrosion in wet environments.

Steel Bolt-Together Framing and Fittings

Rails are drilled with consistently spaced holes for multiple mounting options that do not require machining. Use this steel bolt-together framing to build guards, tables, and racks.

Flat and Angled Bolt-Together Framing and Fittings

Press-Fit Framing and Fittings

No need for fasteners—friction holds this framing together. Use press-fit framing and fittings to assemble carts, enclosures, and partitions.

Strut Channel Framing and Fittings

Offset-Surface Strut Channel Brackets

Corner Strut Channel Brackets

Surface Strut Channel Brackets

Wraparound Strut Channel Brackets

Designed to wrap around the sides of strut channel, these brackets provide a stronger hold than other strut channel brackets.

Push-In Strut Channel Brackets

Push these brackets into strut channel and tighten the included cam screws for a partially concealed connection.

Strut Channel Panel-Mounting Brackets

Clamp panels onto strut channel to hold them in place.

Strut Channel Brackets for Quick-Connect Clamps

These brackets have narrow slots compatible with quick-connect clamps for securing pipe and conduit on the channel side of struts without screws or tools.

Strut Channel Floor Mounts

Securely fasten strut channel to the floor.

Strut Channel Standoffs

Mount strut channel away from walls.

Telescoping Strut Channel

Slide the strut channel into the tube for telescoping length adjustments.

Low-Profile Strut Channel

Half the height and the same width as regular strut channel, this low-profile strut channel fits into tight spots and is compatible with many of the same brackets.

Strut Channel

Strut Channel with Mounting Plate

Back-to-Back Stacked Strut
Channel with Mounting Plate

Strut Channel for Quick-Connect Clamps

For compatibility with quick-connect clamps to secure pipe and conduit without screws and tools, this strut channel has narrow slotted holes.

Strut Channel Trolley Brackets

Brackets mount on the outside of strut channel to allow trolley movement.

Strut Channel Handles

Mount between two strut channels to create a handhold.

Strut Channel Braces

Support the corners of strut channel structures.

Strut Channel Pivots

Position two strut channels at a 30° to 90° angle, then tighten the bolt to secure.

Strut Channel Stair Tread Brackets

Mount these brackets to strut channel to add stair treads. They’re also known as stringers.

Food Industry Strut Rails

A flat or half-round shape keeps water from pooling on these strut rails. Unlike a traditional C-shape strut, these rails prevent the buildup of bacteria and debris, making them ideal for use in sanitary or food production environments.

Strut Channel Conduit Connectors

Support and protect conduit by mounting it to strut channel.

Strut Channel Rail Supports

Mount to your strut channel to support rail, tube, or pipe.

Strut Channel Shelf Brackets

A tab on the end of these shelf brackets fits inside the strut channel for extra stability.

Strut Channel Outlet Boxes and Covers

Mount electrical components along your strut channel to bring power to new locations.

Strut Channel Cable Tie Holders

Attach cable, pipe, tubing, and other items to your strut channel.

T-Slotted Framing and Fittings

T-Slotted Framing Rails

These rails have continuous T-slots for attaching fittings. Use this versatile framing to configure machine guards, enclosures, carts, and workstations.

T-Slotted Framing Panels and Doors

Add panels to T-slotted framing to create machine guards and strip doors.

T-Slotted Framing Structural Brackets

Connect T‐slotted rails and reinforce joints for structural stability.

T-Slotted Framing Fasteners

Screw and nut sets or nuts secure brackets and other accessories to rails.

T-Slotted Framing Storage Components

Stay organized with hooks, bin boxes, shelves, and tool holders that work with T-slotted framing.

T-Slotted Framing Caps, Covers, and Seals

Seal T-slots, rail ends, and gaps between rails to keep out dust, debris, and other contaminants.

T-Slotted Framing Mounting Brackets

Attach sensors, tubes, and other components to T-slotted framing rails and structures.

T-Slotted Framing Pivots

Pivots provide smooth motion at the junction between two T-slotted rails.

T-Slotted Framing Mounting Feet and Casters

Add mounting feet and casters to T-slotted framing structures to level equipment, anchor legs to the floor, or add mobility.

T-Slotted Framing Hinges

Use hinges to add doors, lids, and machine guards to T-slotted framing.

T-Slotted Framing Slides, Tracks, and Rollers

Slide drawers, panels, and doors with these tracks and rollers.

T-Slotted Framing Bases

Get projects off to a quick start with these kits that include the components you need to build simple structures, such as workbenches, workstations, and stands.

T-Slotted Framing Cable Holders and Duct

Route wires, cables, and tubing along T‐slotted rails.

T-Slotted Framing Handles

Add a convenient grip to steer carts or open and close doors, windows, and drawers made of T-slotted framing.

T-Slotted Framing Locks and Latches

Secure doors and windows made of T-slotted framing to protect valuables or restrict access for safety.

Weld-Together Framing and Fittings

Telescoping Weld-Together Rails

Create posts of varying lengths.

Weld-Together Framing and Fittings

Create strong structures by welding this framing together. Add metal panels to close off openings.

Metal Panels

Close off openings in structures while allowing air to pass through.

Miniature T-Slotted Framing and Fittings

Build test fixtures, prototypes, and other small structures with this miniature version of T-slotted framing and fittings.

Heavy Duty Locking-Slotted Framing and Fittings

Build structures that stand up to more vibration and movement than T-slotted framing but with the same versatility and installation ease. Instead of T-shaped slots, these rails have slots that turn up and inward to keep connections rigidly aligned together.

Lightweight Composite T-Slotted Framing and Fittings

Lightweight Composite
T-Slotted Framing and Fittings

Build lightweight structures, such as light duty machine guards, enclosures, and carts, with framing that is two-thirds the weight of aluminum framing.

Push-to-Close Locks and Latches

Push-to-Close Latches with Edge-Pull Handle

An edge-pull handle fits where traditional handles don’t and makes these latches easy to open.

Push-to-Close Latches with
Edge-Pull Handle for Sliding Doors

Quickly push to secure sliding doors. An edge-pull handle fits where traditional handles don’t and makes these latches easy to open.

Keyed Push-to-Close Locks with Edge-Pull Handle

Pull the edge of the lock to open your door—the low-profile grip fits in tight spaces. These locks are a convenient alternative to cam and draw locks since they don’t require you to turn a cam or pull a latch.

Keyed Push-to-Close Locks with
Edge-Pull Handle for Sliding Doors

For use on on sliding doors—including those on T-slotted framing systems—these locks have a two-piece design that locks when pushed closed. An edge-pull handle makes these locks easy to open and fits where traditional handles don’t.

Stacking Caps and Targets

Weld these caps and targets to the ends of posts to create stackable shelving and racking systems.

Modular Mini Chain Belt Conveyors

Build a mini conveyor in any shape you need. These conveyors have curved, straight, incline, and decline runs that you can quickly join together with the included brackets.

Bolt-Together Framing and Fittings

Aluminum Bolt-Together Framing and Fittings

Steel Bolt-Together Framing and Fittings