The The Light Source PCM3/8 Purlin Clamp with 3/8" Fasteners (Silver) is a professional-grade structural mounting clamp designed for securely attaching lighting fixtures, electrical equipment, threaded rod, and production hardware to bar joists, purlins, and I-beams up to 1 inch thick. Manufactured from high-strength aircraft-grade extruded aluminum, the PCM3/8 provides a lightweight yet durable mounting solution for entertainment venues, theatrical productions, broadcast facilities, commercial buildings, and permanent architectural installations. Its natural silver finish offers excellent corrosion resistance while maintaining a clean, professional appearance.

Designed for fast and secure installation, the PCM3/8 incorporates precision-machined micro-grooves that improve grip on structural members, minimizing movement once installed. The clamp includes a 3/8"-16 × 2.5-inch fully threaded square-head set screw for locking onto the beam and a 3/8"-16 × 1-inch Grade 5 hex head bolt for attaching equipment or supporting threaded rod. This versatile design allows installers to suspend lighting fixtures, cable trays, electrical conduit, or other production hardware without drilling or permanently modifying structural steel.

Engineered for professional rigging applications, the PCM3/8 is rated for a 210 lb working load limit under the manufacturer's current specifications. Its compact footprint simplifies installation in confined spaces while maintaining excellent strength and reliability. The lightweight aluminum construction reduces overall rigging weight without sacrificing structural integrity, making it well suited for touring productions, permanent venue installations, and commercial construction projects.

Whether used in theaters, concert venues, television studios, convention centers, houses of worship, or commercial AV installations, the The Light Source PCM3/8 delivers dependable structural attachment, quick installation, and long-term durability. Its precision engineering, professional-grade hardware, and robust load capacity make it a trusted mounting solution for entertainment and architectural applications.