BUILT TO LAST
Designed for Australian conditions
Engineered to withstand the harshest climates and built to last with premium materials, this product is crafted with care for everyday Australian life.
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40,000+ Australian customers · Australian-owned & operated
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Overview
Master Lock Magnum with 51mm Long Shackle Padlock 4 Pack is a high-security padlock designed for various applications, featuring advanced materials and construction for enhanced durability.
The Master Lock Magnum with 51mm Long Shackle Padlock is engineered for maximum security in demanding environments. Its robust design includes a 51mm wide laminated steel body, providing strength and reliability. The padlock features a Tough-Cut™ octagonal boron-carbide shackle that is 50% harder than hardened steel, ensuring exceptional resistance to cutting and sawing. With dual-armor protection, the padlock is surrounded by stainless steel and zinc components, offering weather resistance. The dual ball bearing locking mechanism enhances pry resistance, while the reinforced body bumper protects against scratches. This padlock is suitable for use in worksites, manufacturing facilities, storefronts, and various access areas.
Features
- Tough-Cut™ octagonal boron-carbide shackle, 50% harder than hardened steel
- 51mm shackle length for versatile applications
- Dual-Armor™ protection with laminated steel core and weather-resistant outer components
- Dual ball bearing locking for maximum pry resistance
- Reinforced body bumper for scratch resistance
Specifications
| Dimensions (W x H x D) | 52mm x 104mm x 31mm |
| Weight | 1.64kg |
| Material | Boron Carbide and Laminated Steel |
| Colour | Silver |
| Model Number | M5QLH |
| Shackle Diameter | 10mm |
| Shackle Clearance | 51mm |
| Number of Locks in Pack | 4 |
| Number of Keys | 2 |
The Master Lock Magnum with 51mm Long Shackle Padlock 4 Pack offers reliable security solutions for various applications.
Specifications
Specifications will vary by product. Please refer to the product description above or contact us before ordering if you need a specific measurement.
Shipping & Returns
Shipping
Orders are dispatched from our Sydney and Melbourne warehouses within 1–2 business days of payment. Delivery times from Sydney:
- NSW & ACT: 2–5 business days
- VIC & QLD: 2–7 business days
- SA: 3–8 business days
- TAS: 4–10 business days
- WA: 5–10 business days
Tracking is provided on dispatch. Remote postcodes may incur additional fees.
30-day change-of-mind returns
We offer a 30-day change-of-mind return on select unopened products in original packaging (excluding health/safety items or bulk purchases). Email us within 30 days of delivery to start a return.
A restocking fee of 7–25% applies, plus return postage (unless approved otherwise). Customer-incurred postage costs are non-refundable without prior approval.
Faulty or damaged on arrival
If your product arrives faulty or damaged, contact our support team with your order number, photos/videos of the fault, and the original packaging. Do not return items without a return authorisation.
Warranty
12-month Australian warranty on this product unless noted otherwise. The warranty covers manufacturing defects under normal use.
The warranty does not cover:
- Damage caused by misuse, incorrect installation, or modification.
- Damage during delivery (claim under shipping policy instead).
- Normal wear and tear.
To claim warranty: contact our support team with your order number, photos/videos of the fault, and a brief description. We will assess the claim and offer a replacement, repair, or refund as appropriate.
AUTOMATION
Smart automation, set and forget
Time-saving design with intuitive controls. Set it once and let it work for you, freeing up your time for what matters most.
AUSSIE SUPPORT
Backed by genuine Australian support
Local warranty, fast dispatch from Sydney, and Australian customer service Mon-Fri. We are a real business with real people, just a phone call away.
Complete the set
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Total price
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Why Aussies Shop With Auzzi
A registered Australian business with real local support, transparent pricing, and fair returns.
Australian Business
ABN 79 670 758 782. Registered in Australia.
Fast Australia-Wide Dispatch
Ships fast from our Sydney + Melbourne warehouses.
Secure SSL Checkout
Card, PayPal, Apple Pay, Google Pay accepted.
30-Day Returns
Change-of-mind returns within 30 days.