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Locknuts

At SCHNAP, our Locknuts range offers tradies and contractors reliable, top-quality fittings for every electrical setup. From durable nylon and machined brass to marine-grade 316 stainless steel, we stock sizes from 12mm to 63mm to suit any conduit application. Whether you're after Clipsal-compatible gear or Tradepro's corrosion-resistant solutions, each locknut is built for secure fastening and long-term performance—even in tough Aussie conditions.

Buy online and save with trade discounts across the range. Check live stock levels across Australia and enjoy fast, reliable delivery to your site or shed.

$125.20 $103.40
The Brass Locknut Nickel Plated M105 Thread is designed for secure fastening of cable glands in electrical installations. Made from durable nickel plated brass, it fits metric conduits ranging from 16mm to 63mm, ensuring compliance with AS/NZS 3000 standards. Ideal for electricians and professionals, this locknut enhances corrosion resistance and extends product life.
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$3.40 $2.80
The Brass Locknut Nickel Plated M12 Thread is designed for secure fastening of cable glands in electrical installations. Made from durable nickel-plated brass, it offers excellent corrosion resistance and is compatible with metric conduits ranging from 16mm to 63mm. Ideal for industrial and commercial wiring applications, this locknut ensures compliance with electrical standards and enhances the longevity of your installations.
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$158.30 $130.80
The Brass Locknut Nickel Plated M120 Thread is designed for securing cable glands in electrical installations. Made from nickel-plated brass, it offers excellent corrosion resistance and is compatible with all Alco metal cable glands. Ideal for fastening in industrial and commercial wiring, this locknut ensures a reliable connection for metric conduits ranging from 16mm to 63mm.
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$3.50 $2.90
The Brass Locknut Nickel Plated M16 Thread is designed for securely fastening cable glands in electrical installations. Made from nickel-plated brass, it offers high corrosion resistance and is compatible with metric conduits ranging from 16mm to 63mm. Ideal for industrial, commercial, and residential wiring, this locknut ensures durability and compliance with electrical standards.
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$3.60 $3.00
The Brass Locknut Nickel Plated M20 Thread is designed for secure fastening of cable glands in electrical installations. Made from durable nickel-plated brass, it offers excellent corrosion resistance and is compatible with metric conduits ranging from 16mm to 63mm. Ideal for industrial and commercial wiring, this locknut ensures compliance with electrical standards and enhances the longevity of your installations.
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$5.10 $4.20
The Brass Locknut Nickel Plated M25 Thread is designed for secure fastening of cable glands in electrical installations. Made from durable nickel-plated brass, it offers excellent corrosion resistance and is compatible with metric conduits ranging from 16mm to 63mm. Ideal for industrial, commercial, and residential wiring, this locknut ensures compliance with AS/NZS 3000 standards for safety and reliability.
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$6.50 $5.40
The Brass Locknut Nickel Plated M32 Thread is designed for secure fastening of cable glands, featuring durable nickel-plated brass construction for enhanced corrosion resistance. Ideal for electrical installations and compatible with metric conduits ranging from 16mm to 63mm, this locknut ensures reliable performance in industrial and commercial applications.
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$12.10 $10.00
The Brass Locknut Nickel Plated M40 Thread is designed for secure fastening of cable glands, featuring durable nickel-plated brass construction for enhanced corrosion resistance. Ideal for electrical installations involving metric conduits from 16-63mm, this locknut ensures compliance with AS/NZS 3000 standards, making it a reliable choice for professionals.
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$13.70 $11.30
The Brass Locknut Nickel Plated M50 Thread is designed for securing cable glands in electrical installations. Made from nickel-plated brass, it offers excellent corrosion resistance and is compatible with metric conduits ranging from 16mm to 63mm. Ideal for industrial, commercial, and residential wiring, this locknut ensures a secure fastening for all Alco cable glands.
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$33.30 $27.50
The Brass Locknut Nickel Plated M63 Thread is designed for securing cable glands in electrical installations. Made from durable nickel-plated brass, it offers excellent corrosion resistance and is compatible with metric conduits ranging from 16mm to 63mm. Ideal for industrial, commercial, and residential wiring, this locknut ensures a secure fastening for all Alco cable glands.
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$88.20 $72.90
The Brass Locknut Nickel Plated M75 Thread is designed for secure fastening of cable glands in electrical installations. Made from durable nickel-plated brass, it is compatible with metric conduits ranging from 16mm to 63mm, ensuring reliability and compliance with AS/NZS 3000 standards. Ideal for professional electricians, this locknut enhances corrosion resistance and supports long-term use.
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$122.60 $101.30
The Brass Locknut Nickel Plated M82 Thread is designed for secure fastening in electrical installations, made from durable nickel plated brass. Ideal for use with Alco metal cable glands and compatible with metric conduits ranging from 16mm to 63mm, this locknut ensures compliance with electrical standards while enhancing corrosion resistance for a longer lifespan.
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$122.60 $101.30
The Brass Locknut Nickel Plated M90 Thread is designed for secure fastening of cable glands, featuring durable nickel plating for enhanced corrosion resistance. Ideal for electrical installations, this locknut is compatible with metric conduits ranging from 16-63mm, ensuring reliable performance in various applications.
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$86.50 $71.40
The Locknut Stainless Steel M16 is designed for reliable fastening in electrical installations, made from high-quality grade 316 stainless steel for superior corrosion resistance. Ideal for securing conduit fittings and cable glands, this durable solution ensures compliance with AS/NZS 3000 standards, making it perfect for both professional electricians and DIY enthusiasts.
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$100.70 $83.20
The Locknut Stainless Steel M20 is designed for securing conduit fittings and cable glands in electrical installations. Made from high-quality grade 316 stainless steel, it offers excellent corrosion resistance and is compatible with metric ISO threads from 16-63mm. Ideal for both industrial and commercial wiring applications, this locknut ensures reliable and secure connections.
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$5.30 $4.40
The Locknut Brass M25 is designed for securing cable glands in electrical installations, made from durable brass with a nickel-plated finish for enhanced corrosion resistance. Ideal for both metal and PVC conduit fittings, this locknut ensures reliable performance in industrial and commercial wiring projects.
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$118.90 $98.20
The Locknut Stainless Steel M25 is designed for secure fastening of cable glands and conduit fittings, made from high-quality grade 316 stainless steel for superior corrosion resistance. Ideal for industrial and commercial electrical installations, it ensures compatibility with metric ISO threads from 16-63mm, providing a reliable solution for your wiring needs.
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$132.70 $109.70
The Locknut Stainless Steel M32 is designed for secure fastening of conduit fittings and cable glands, made from high-quality Grade 316 stainless steel for superior corrosion resistance. Ideal for industrial and commercial electrical installations, this locknut ensures compliance with AS/NZS 3000 standards, making it a reliable choice for electricians and professionals.
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$135.70 $112.10
The Locknut Stainless Steel M40 is designed for fastening conduit fittings and cable glands, made from high-quality grade 316 stainless steel for superior corrosion resistance. Ideal for industrial, commercial, and residential electrical installations, this durable solution ensures reliable performance and compliance with AS/NZS 3000 standards.
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$17.70 $14.70
The Locknut Brass M50 is designed for securing cable glands in electrical installations, featuring a durable brass construction and a nickel-plated finish for corrosion resistance. Ideal for both metal and PVC conduit fittings, this metric locknut ensures a secure fit, making it perfect for industrial and commercial wiring projects.
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$142.00 $117.40
The Locknut Stainless Steel M50 is designed for secure fastening in electrical conduit systems, featuring high-quality grade 316 stainless steel for superior corrosion resistance. Ideal for industrial, commercial, and residential applications, it ensures compatibility with all metric ISO threads from 16-63mm, making it a reliable choice for conduit fittings and cable glands.
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$47.00 $38.80
The Locknut Brass M63 is designed for securing cable glands in electrical installations, featuring a durable brass construction and a nickel-plated finish for corrosion resistance. Ideal for both industrial and commercial wiring projects, this metric locknut ensures a secure fit with metal and PVC conduit fittings, making it a reliable choice for electricians and contractors.
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$147.80 $122.10
The Locknut Stainless Steel M63 is designed for secure fastening of conduit fittings in electrical installations. Made from high-quality grade 316 stainless steel, it offers exceptional corrosion resistance and durability. Ideal for use with Wattmaster conduit fittings and cable glands, this locknut ensures reliable performance in various applications, making it a must-have for professional electricians.
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Lock It In: A Sparky's Guide to Conduit Locknuts

A conduit fitting is only as secure as the nut that's holding it tight. A loose connection that vibrates over time isn't just unprofessional—it's a future point of failure. The humble electrical locknut is the essential component that guarantees a rock-solid, vibration-proof fastening for your conduit entries into switchboards, junction boxes, and enclosures.

At SCHNAP, our Locknuts range offers Aussie tradies and contractors reliable, top-quality fittings for every electrical setup, from a standard domestic fit-out to the toughest industrial site.

Choosing the Right Locknut Material for the Job

Selecting the right material for the environment is key to a long-lasting, compliant installation.

  • Durable Nylon Locknuts: The versatile and cost-effective choice for securing PVC fittings into PVC or plastic enclosures. They are naturally corrosion-free and easy to work with, making them a staple in any sparky's kit.
  • Machined Brass Locknuts: The industry standard for a secure mechanical and electrical earth continuity bond. When you're connecting metal conduit fittings to a steel switchboard or enclosure, a brass locknut is the professional's choice. Our range includes Clipsal-compatible gear you can rely on.
  • Marine-Grade 316 Stainless Steel Locknuts: For the toughest Aussie conditions, you need the ultimate in corrosion resistance. For installations in coastal, marine, or highly corrosive industrial environments (like food processing plants), 316 stainless steel locknuts offer unparalleled long-term performance and prevent rust.

A Size for Every Conduit

From a small 12mm lighting circuit right up to a heavy-duty 63mm sub-main, we've got the right size locknut to suit any standard Australian conduit application.

Trusted Brands for a Secure Fastening

A secure connection starts with quality parts. We stock a huge range of locknuts from the brands that Aussie sparkies trust on their jobs every day, including Tradepro's corrosion-resistant solutions and other industry leaders like Matelec.

Why Sparkies Choose SCHNAP

Don't let a cheap, low-quality nut compromise your professional installation.

  • A complete range of nylon, brass, and 316 stainless steel locknuts.
  • Sizes from 12mm to 63mm to suit any conduit application.
  • Trusted brands built for tough Aussie conditions.
  • Fast delivery and competitive trade pricing.

For the rock-solid locknuts you need to keep your connections tight and your installs compliant, trust SCHNAP to have you covered.

Need locknuts at the best prices and good quality? Shop now at Schnap