Article Overview
Cable tray anti-slip nuts are specialized fasteners designed to prevent loosening in cable tray installations, typically specified by thread size, material, finish, and load rating.
Typical Specifications
| Parameter | Typical Values / Notes |
|---|---|
| Thread Size | M6, M8, M10, M12 (metric) or 1/4", 5/16", 3/8", 1/2" (imperial) depending on tray system |
| Material | Carbon steel, stainless steel (A2/A4), or zinc-plated steel |
| Finish / Coating | Hot-dip galvanized, electro-galvanized, zinc-plated, or passivated stainless steel for corrosion resistance |
| Type | Anti-slip / lock nut, serrated flange nut, or nylon-insert lock nut |
| Torque Rating | Varies by size and material; typically M6: 5–7 Nm, M8: 15–20 Nm, M10: 25–30 Nm |
| Standards Compliance | ISO 4032 (hex nuts), ASTM A563, DIN 934, NEMA VE 1 for cable tray systems |
| Compatibility | Designed to fit standard cable tray bolts and splice plates; may be used with ladder, perforated, or solid-bottom trays |
| Temperature Range | -40°C to +120°C for standard steel; stainless steel may tolerate higher temperatures |
| Special Features | Serrated flange or nylon insert prevents loosening under vibration; some systems use fast-fit alternatives like Swiftclip for faster installation |
Notes on Installation and Selection
- Material Selection: For outdoor or corrosive environments, stainless steel or hot-dip galvanized nuts are preferred to prevent rust and maintain structural integrity .
- Anti-Slip Design: Serrated flange nuts or nylon-insert lock nuts provide resistance to vibration and prevent loosening in dynamic installations.
- Fast-Fit Alternatives: Some manufacturers, such as Legrand, offer Swiftclip or similar fast-fit systems that replace conventional nuts and bolts, reducing installation time and component count while maintaining secure connections .
- Standards Compliance: Ensure nuts meet relevant standards (ISO, ASTM, NEMA) to guarantee compatibility with cable tray systems and adherence to electrical and mechanical safety codes .
References for Further Details
- Oglaend System and Eaton provide detailed product catalogs and specifications for cable tray systems and associated fasteners, including anti-slip nuts .
- Legrand's Swiftclip system demonstrates modern alternatives to traditional anti-slip nuts, offering faster installation while maintaining secure connections . This table provides a practical reference for selecting anti-slip nuts for cable tray installations, ensuring proper fit, corrosion resistance, and compliance with industry standards.
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