Cable Gland Lock Nuts

Cable gland lock nuts — also commonly known as lock nuts, locking nuts or locknuts — are hexagonal fasteners designed to secure cable glands to enclosures, junction boxes, panels or machinery. Widely used in power, control, data and telecom installations, they provide reliable fastening that resists vibration and maintains ingress protection. Available in brass, A2 stainless steel, nylon and EMC-shielded types, they cover metric sizes from M12 to M63, as well as PG and NPT threads for versatile installation options.

Available Materials & Options

• Brass lock nuts: Excelling in strength and corrosion resistance, especially when paired with brass cable glands.
• A2 stainless steel lock nuts: Offering superior durability and performance in harsh or high-temperature environments.
• Nylon lock nuts: Lightweight, cost-effective and IP68-rated, suitable for non-corrosive, indoor and outdoor installations.
• EMC/shielded lock nuts: Ensure electrical continuity for shielded and armoured cable systems.
• Thread & size options: Covering common metric threads (M12–M63), PG, and NPT formats to suit diverse installations.

Key Features & Benefits

• Secure fastening: Prevents cable glands from loosening in high-vibration or mobile application.
• Corrosion resistance: Metal lock nuts withstand industrial, marine and outdoor exposure.
• Ingress protection: Supports IP ratings by sealing entry points, especially when used with appropriate washers.
• Electrical grounding/EMC support: Metal and EMC types preserve shielding continuity in data, telecom and instrumentation systems.
• Anti‑vibration locking: Serrated washers and nylon inserts maintain secure fastening under movement or machinery vibration.

Common UK Use Cases

• Industrial control panels in manufacturing plants.
• Outdoor lighting and solar installations requiring IP68 sealing.
• Marine and offshore systems needing stainless steel corrosion protection.
• Data centre and telecom infrastructure relying on EMC shielding.
• Vehicle workshops using anti‑vibration lock nuts in mobile equipment.

Related Vital Parts Products

Explore our range of compatible brass cable glands, stainless steel glands, EMC cable glands and sealing washers to complete your installations.

Call Vital Parts

For quick quotes, same‑day dispatch, custom sizes, or bulk discounts, call our sales line on 01233 713 581. Businesses can register for a Vital Parts Business Account to benefit from priority shipping, trade pricing, free product samples, credit accounts, and a dedicated account manager.