Strut Channels & Components
What are Strut Channels & Components?
Strut channels & components are a modular steel framing system used to mount, brace, and support pipe, conduit, cable tray, HVAC equipment, and light-duty structures. The C-shaped channel with inward lips accepts channel nuts, letting you position hardware anywhere in the run without drilling.
What sizes does strut channel come in?
- 1-5/8 in standard depth: most common for general framing and trapeze supports
- 13/16 in shallow: light duty and tight clearances
- Back-to-back profiles: increased stiffness for longer spans
Which is better: slotted or plain strut channel?
Slotted eases layout and anchor adjustment; plain gives continuous bearing and cleaner surfaces for higher point loads or washdown.
What finishes are available for strut channel?
- Pre-galvanized zinc: common indoor service
- Hot-dip galvanized: outdoor/corrosive exposure
- Stainless steel: maximum corrosion resistance
- Painted/powder coated: identification and extra protection
How much weight can strut channel hold?
Capacity depends on profile, span, orientation, and hole pattern. Always use the manufacturer’s load tables for your exact channel and configuration.
How do I choose channel nuts and spring nuts?
Match the nut family to the channel’s width and lip style, then select the thread (e.g., 1/4-20, 5/16-18, 3/8-16). Use spring length to suit shallow vs. standard depth channels.
How do I mount pipe or conduit to strut?
Use pipe/conduit clamps sized to OD. Choose cushioned clamps for vibration/noise, solid clamps for high temperature or chemicals.
How do I attach strut to a beam or wall?
- Beam clamps: attach to structural steel without drilling (verify flange limits)
- Anchors: for concrete/masonry with proper spacing and edge distances
- Post bases: for vertical members and light framing
What are the essential strut fittings and accessories?
- Angles, tees, splices, trapeze hangers
- Pipe/tube clamps (cushioned & solid)
- Beam clamps and post bases
- Hardware: spring channel nuts, washers, hex bolts
What are best practices for installing strut channel?
- Use proper torque; add lock washers or prevailing-torque nuts in vibration
- Confirm spans/orientation with load tables before layout
- Isolate dissimilar metals or use compatible finishes to limit galvanic corrosion
Strut Channels & Components FAQ
1-5/8 in wide channel is standard for general framing, with 13/16 in used for light duty and tight spaces.
Use slotted for anchor adjustability and field alignment; choose plain for maximum bearing surface and higher point loads.
Hot-dip galvanized or stainless steel, selected based on moisture, salt, and chemical exposure.
Match the nut family to the channel width and lip style, then pick the thread size. Spring length should suit channel depth.
No. Use purpose-made pipe or conduit clamps to secure and isolate the line.
Yes. They increase stiffness and load rating when used per load tables.
1/4-20, 5/16-18, and 3/8-16 are the most frequently used.