Unistrut® Metal Framing | Core Specs & FAQUnistrut P1000 Series
Engineered Support Systems
Unistrut is a brand name for a type of metal framing system made from steel or aluminum.It consists of a series of channels, brackets, and accessories that can be easily assembled to create strong and stable structures.
⚡ Weldless ConnectionPatented spring nut & bolt – no drilling, 100% reusable, fully adjustable in field.
🏗️ Global Standard1-5/8' x 1-5/8' (41x41mm) 12 gauge channel, the industry benchmark for trapeze, seismic, pipe & cable tray supports.
📜 Certified QualityUL listed raceway, seismic OSHPD pre-approved, AISI cold-formed design, Made in China.
📋 P1000 Channel Specifications
| Catalog / Model | Dimensions (WxH) | Gauge / Thick | Lengths | Finishes (standard) | Weight (kg/m) | Part Weight (lb/ft) |
|---|
| P1000 Solid | 41.3 x 41.3 mm | 12 ga (2.7 mm) | 10' / 20' | PGHGGRPLDFSSEA | 2.83 | 1.90 |
| P1000T (Slotted) | 41.3 x 41.3 mm | 12 ga | 10' / 20' | PGHGGR | 2.75 | 1.85 |
| P1000 KO (Punched) | 41.3 x 41.3 mm | 12 ga | 10' / 20' | PGHG | 2.83 | 1.90 |
| P1000 Defender™ (DF) | 41.3 x 41.3 mm | 12 ga | 10' / 20' | DF (3x corrosion > HG) | 2.83 | 1.90 |
| P1000 Stainless 304 (SS) | 41.3 x 41.3 mm | 12 ga | 10' / 20' | SS (A240) | 2.83 | 1.90 |
| P1000 Aluminum (EA) | 41.3 x 41.3 mm | 0.109' (2.8 mm) | 10' / 20' | EA 6063-T6 | 1.13 | 0.76 |
✅ Beam loads based on AISI S100-07 (ASD) | Safety factor: 1.67 (beam), 1.80 (column) | 33 ksi yield, cold-formed to 42 ksi.
✅ P1000 max uniform load (simple span): 1690 lbs @ 24' span; deflection 0.06'. See load tables for detailed calculations.
📌 Finish codes: GR (Perma-Green III epoxy) · PG (Pre-galvanized G90) · HG (Hot-dip galvanized) · PL (Plain) · EG (Electro-galvanized) · DF (Defender™ high corrosion) · SS (Stainless steel 304/316). Weight based on standard 10' & 20' lengths, tolerance ±1/8'. Load data available per AISI S100-07.
❓ People also askExpert insights
🔧 What makes Unistrut different from generic strut?+
Genuine Unistrut channel is serial-number stamped with “UNISTRUT” and BSEN6946:1988. It features precision-rolled serrated lips (on 2.5mm versions) for maximum nut grip, superior load tables based on AISI specifications, and full UL/CSA listing as raceway. The original weldless connection offers 100% adjustability and reusability unmatched by imitations.
🧪 Which finish should I choose for corrosive environments?+
For severe outdoor/coastal: Hot-Dip Galvanized (HG) (55µm min coating) or Unistrut Defender™ (DF) – proprietary coating with 3X corrosion resistance of HG. For extreme chemical/marine: Stainless Steel 316L (1.4404). Pre-Galvanized (PG) is cost-effective for indoor/dry applications.
📏 What are standard lengths and tolerances?+
Standard lengths: 10 ft (3.05 m) and 20 ft (6.10 m) with tolerance ±1/8' (3 mm). Cut-to-length service available with same tolerance. Curved channel possible via custom order.
⚙️ How to identify genuine Unistrut® channel?+
Look for continuous stamping inside the channel: 'UNISTRUT' + part number (e.g., P1000) + BSEN6946:1988. The markings remain visible even after HDG or powder coating. Inferior products often have removable or no markings.
📐 Can I use Unistrut for seismic bracing and trapeze?+
Yes. Unistrut P1000 / P1001 combinations are OPM pre-approved for seismic applications. Load tables provide allowable loads for slot-face and concentric loading with K-factors, meeting ASCE and IBC requirements.
📌 Other Key Profiles (41mm width)
| Model | Dimensions (mm) | Thickness | Weight (kg/m) | Typical Use / Features |
|---|
| P1100 | 41 x 41 | 1.9 mm (14 ga) | 2.11 | Medium duty, ideal for commercial/display |
| P3300 | 41 x 22.2 | 2.7 mm (12 ga) | 2.01 | Shallow depth, low profile applications |
| P4000 | 41 x 20.6 | 1.5 mm (16 ga) | 1.22 | Lightweight, suitable for electrical supports |
| P5000 | 41 x 83 | 2.5 mm (12 ga) | 4.05 | Deep channel, heavy loads / high moment capacity |
| P5500 | 41 x 62 | 2.5 mm | 3.68 | Medium-deep profile, seismic bracing |
| P1001 (back-to-back) | 41 x 82.6 | 2.7 mm | 5.66 | Double channel, very high load capacity |
📊 P1000 Beam Load (Uniform) @ 48' span
Max allowable: 850 lbs (3.78 kN)
Deflection: 0.22'
📐 Column load @ slot face (24' unbraced)
3,550 lbs (15.8 kN)
K=0.65 concentric: 10,740 lbs
🧾 Bolt torque recommendation
M12 (1/2'-13): 50 ft·lbs (68 N·m) dry torque
🏗️ Key Applications & Project Showcase
📦
Storage Racks & Shelving
Fully adjustable industrial shelving, art display racks, bar-stock cantilever racks. Easily reconfigure without welding.
🔧
Pipe & Conduit Supports
Trapeze hangers, multi-tier cable trays, seismic bracing. Ideal for mechanical/electrical infrastructure.
⚡
Equipment & Transformer Supports
Heavy-duty brackets, overhead rectifier mounts, panel board frames. Quick post-installation adaptation.
☀️
Solar PV Mounting Systems
UL 2703 recognized; ground mount & rooftop solutions with hot-dip galvanized or Defender finish for 3X corrosion resistance.
🏥
Medical Equipment Supports
X-ray boom systems, multi-rail ceiling grids, seismic-rated supports for operating rooms & rehab centers.
🏭
Material Handling & Trolleys
Conveyor supports, rolling carts, die-handling trolleys, vehicle exhaust release systems (Telestrut telescoping).
🪜
Platforms & Walkways
United Interlock Grating + Unistrut creates slip-resistant mezzanines, rooftop catwalks, machine platforms & handrails.
🌐
Ceiling Grids & Overhead Supports
Raceway-compatible ceiling grids, HVAC support, overhead platforms with adjustable hangers and beam clamps.
🏗️ Concrete Inserts & Fixpoints (Quick data)
| Type | Series | Pullout Capacity | Lengths | Applications |
|---|
| Standard duty | P3270 (41x41) | 8.8 kN (avg concrete B25) | 300mm / cuttable | Floor/wall/ceiling embedment, pipe & cable supports |
| Light duty | P3370 (41x22) | 6.7 kN | 300mm sections | Lighter loads, pre-cast elements |
| Heavy duty / T-bolt | P3780 series | Up to 15 kN | custom lengths | High-load industrial anchoring |
🔩 Recommended Channel Nuts & Hardware
| Part Number | Thread | Compatible Channel | Finish | Pull-out (kN) | Slip resistance (kN) |
|---|
| P1006-1420 (spring) | M6 (1/4'-20) | P1000, P1100, P2000, P3000 | EG / HG / PL | 2.7 | 1.3 |
| P1008 | M10 (3/8'-16) | P1000, P3000, P5000 | EG / HG | 4.45 | 3.56 |
| P1010 | M12 (1/2'-13) | P1000, P1100, P2000, P3000, P5000 | EG / HG | 8.9 | 6.7 |
| P3008 (top spring) | M10 | Any 41mm channel | EG / GR | 4.45 | 3.56 |
| A1006-1420 SS | M6 | A1000 (1¼' series) | Stainless 304 | 2.7 | 1.3 |
🧩 System integration: Unistrut works with Telestrut telescopic tubing, United Interlock Grating, and seismic rod stiffeners. All components share the same weldless connection philosophy.
