Certa Lock Nuts are precision-engineered cable gland accessories designed to securely fasten cable glands to electrical enclosures, junction boxes, control panels, and gland plates. Installed on the inside of the enclosure, the lock nut firmly secures the cable gland in position, ensuring reliable mechanical retention and maintaining the integrity of the cable entry system.
Manufactured from premium Brass CW614N (CZ121) or CW617N Forged Brass, Certa Lock Nuts are available in natural brass, nickel-plated, and tin-plated finishes to suit a wide range of industrial applications. Designed in accordance with BS 6121-1 and IEC 62444, these lock nuts provide excellent corrosion resistance, long service life, and compatibility with Metric, BSP, PG, and NPT threaded cable glands.
Certa Brass Lock Nuts are essential cable gland accessories used to securely lock cable glands onto equipment enclosures, junction boxes, control panels, and gland plates. Also known as check nuts or back nuts, they provide the necessary mechanical support to prevent cable glands from loosening during installation or operation.
Manufactured using high-quality CW614N (CZ121) or CW617N Forged Brass, these lock nuts are engineered for superior strength, dimensional accuracy, and long-term reliability. Available in natural brass, nickel-plated brass, and tin-plated brass finishes, they provide excellent resistance against corrosion, moisture, and harsh industrial environments.
Designed to match Metric, BSP, PG, and NPT cable gland threads, Certa Lock Nuts ensure secure fastening while maintaining proper alignment and mechanical stability. For outdoor and corrosive environments, nickel-plated lock nuts provide enhanced protection against oxidation and environmental exposure.
Manufactured in accordance with BS 6121-1 and IEC 62444, Certa Lock Nuts are widely used across industrial electrical systems, switchgear panels, control cabinets, power distribution equipment, renewable energy installations, oil & gas facilities, marine applications, and commercial electrical projects. Available in standard sizes from M16 to M100, they offer dependable performance across a wide range of cable gland installations.
| Cable Gland Thread | Lock Nut Size | Across Flats (Approx.) |
|---|---|---|
| M16 × 1.5 | M16 | 22 mm |
| M20 × 1.5 | M20 | 27 mm |
| M25 × 1.5 | M25 | 33 mm |
| M32 × 1.5 | M32 | 41 mm |
| M40 × 1.5 | M40 | 50 mm |
| M50 × 1.5 | M50 | 60 mm |
| M63 × 1.5 | M63 | 75 mm |
| M75 × 1.5 | M75 | 90 mm |
| M90 × 2.0 | M90 | 105 mm |
| M100 × 2.0 | M100 | 115 mm |
| Specification | Details |
|---|---|
| Product | Lock Nut |
| Product Type | Cable Gland Accessory |
| Material | Brass CW614N (CZ121) or CW617N Forged Brass |
| Finish | Natural Brass, Nickel Plated, Tin Plated (Optional) |
| Thread Type | Metric (ISO 965), BSP, PG, NPT |
| Standards | BS 6121-1, IEC 62444 |
| Operating Temperature | -60°C to +200°C (Typical) |
| Corrosion Resistance | Suitable for Industrial & Outdoor Applications |
| Available Sizes | M16 to M100 |
Certa manufactures premium-quality Lock Nuts that provide secure cable gland fastening, exceptional durability, and long-term performance in demanding electrical installations. Every lock nut is manufactured using high-grade brass and precision machining to ensure accurate threading, superior strength, and excellent corrosion resistance.
