Fortress padlock with hardened steel shackle

Master Lock Brass Padlock 50mm Fortress FM8850DAU

Name: Master Lock Brass Padlock 50mm Fortress FM8850DAU
Brand: Master Lock
SKU: FM8850DAU
Price: 18.96 AUD
Availability: InStock

SKU FM8850DAU

By: Master Lock

Save 8%

$20.54

$20.54 - $20.54

$20.54

$18.96

$18.96 - $18.96

$18.96

Availability: This product will be delivered in 3-5 business days

Quantity

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Delivery Notice:

Please allow 3-5 business days for processing before it's ready for delivery or pickup. All standard delivery options still apply.

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Product Description

Master Lock Fortress 50mm Brass Padlock – Heavy Duty Padlock

Instantly establish an impenetrable security perimeter and fiercely protect your massive commercial assets against aggressive theft and relentless weather corrosion with the highly formidable Master Lock Fortress 50mm Brass Padlock (FM8850DAU). In demanding industrial and harsh outdoor environments, standard 40mm steel padlocks are rapidly destroyed; their shackles are severed by heavy bolt cutters, or their internal mechanisms violently rust and permanently seize shut in the rain. This elite heavy duty padlock is expertly engineered to completely eradicate these failures. It features a massive 50mm solid brass core that provides terrifying physical strength against brute-force hammer strikes, while being 100% naturally immune to rust, ensuring flawless key operation year after year even in coastal environments.

Beyond its exceptional weather resistance, the FM8850DAU provides unyielding, brute-force protection. It is armed with a highly advanced 7mm hardened steel shackle that aggressively defeats standard sawing and bolt cutter attacks. Furthermore, the sophisticated dual locking lever mechanism securely locks both sides of the shackle independently, providing devastating resistance against severe pulling, prying, and crowbar assaults. Featuring a highly secure 4-pin cylinder to thwart covert lock-picking, this highly versatile commercial padlock is the ultimate, reliable defense for securing heavy factory gates, massive storage sheds, and large industrial toolboxes.

Who Is The Master Lock 50mm Brass Padlock Ideal For?

This massive 50mm padlock delivers a rust-proof solid brass body, a 7mm hardened steel shackle, and dual locking levers. It is highly recommended for:

Commercial Facility Managers: Utilizing a highly reliable heavy duty padlock to permanently secure massive factory chain-link gates and heavy steel warehouse roller doors that are constantly exposed to heavy, driving rain.
Construction & Tradespeople: Relying on the incredibly tough 7mm hardened steel shackle to safely lock up valuable steel toolboxes and heavy generators left out in the open, protecting expensive tools from opportunistic theft.
Marine & Coastal Properties: Deploying the commercial padlock near the ocean, utilizing the massive solid brass body to completely repel highly corrosive salt spray that destroys standard steel locks instantly.
Agricultural & Farming Assets: Taking absolute advantage of the massive 50mm body size to provide maximum, unyielding security for large remote equipment sheds or heavy livestock gates.

Key Features and Performance Benefits:

Massive 50mm Solid Brass Body: Forged for extreme survival. The heavy-duty 50mm body is cast from solid brass. This provides massive physical strength to survive violent hammer strikes, while being completely and totally immune to rust and weather corrosion.
7mm Hardened Steel Shackle: The absolute deterrent against cutting tools. The thick 7mm shackle is forged from heavy hardened steel, making it incredibly difficult for opportunistic thieves to cut with standard hand saws or medium bolt cutters.
Dual Locking Levers: Absolute brute-force resistance. Most cheap locks only grab the shackle on one side. This mechanism physically locks BOTH sides of the steel shackle tightly, violently resisting prying and extreme pulling force.
Advanced 4-Pin Cylinder: Highly secure internal architecture. The precision-engineered 4-pin tumbler mechanism makes the lock exceptionally difficult to pick or 'bump' open using covert locksmith tools.
High-Visibility Visual Deterrent: At 50mm wide, this padlock presents a massive, shiny physical barrier that immediately signals to thieves that the property is highly secured, deterging them before they even attempt a break-in.

Technical Specifications & Dimensions:

Brand: Master Lock (Fortress Series)
Model Number: FM8850DAU
Product Type: Brass Padlock / Heavy Duty Padlock / Commercial Padlock
Body Width: Massive 50mm
Body Material: Solid Brass (Rust-Proof)
Shackle Diameter: 7mm (Hardened Steel)
Shackle Clearance: 25mm (Vertical Height)
Lock Type: Keyed (Supplied with 2 keys).

Delivery Information

Dispatch: Items marked as “In stock” or “Ready to be shipped” are usually dispatched within 1 business day after payment is received. If an item is not in stock and ordered from our supplier, please allow 3–5 business days for processing before it is ready for delivery or pickup. All standard delivery options still apply.

Shipping: Delivery costs are calculated at checkout based on your location and order size. Bulky items and chemicals may attract additional freight charges and cannot be sent to PO Boxes.

Delivery: Parcels are delivered by road freight. Authority to leave may be used if no one is available to receive the order. For full details, please see our Shipping & Delivery Policy

Business days to delivery

NSW
City	1 Day
VIC
Melbourne	1 Day
Regional	3–4 Days
QUEENSLAND
Brisbane	1–2 Days
Regional	3–4 Days
SOUTH AUSTRALIA
Adelaide	2–3 Days
Regional	4–5 Days
NORTHERN TERRITORY
All Areas	4–6 Days
WESTERN AUSTRALIA
All Areas	4–6 Days
TASMANIA
All Areas	4–6 Days

Frequently Asked Questions

What makes a 50mm padlock better than a 40mm padlock?

A 50mm body width provides a much heavier, more massive physical presence. It is considered a heavy-duty commercial footprint, offering vastly superior resistance against hammer blows and acting as a much stronger visual deterrent than a smaller 40mm lock.

Is the Solid Brass body good for outdoor use?

Yes, absolutely. Solid brass is naturally 100% immune to rust and corrosion. Unlike cheap steel or iron locks that seize up in the rain, this solid brass body will survive brutal outdoor weather, making it excellent for heavy garden gates and tool sheds.

Will the 7mm shackle fit my gym locker?

Likely NO. A 7mm thick shackle is designed for heavy-duty commercial hasps, thick security chains, and large gate latches. It is generally too thick to fit through the tiny holes on standard personal gym lockers or luggage zippers.

Can I use this lock to secure a commercial shipping container?

While it is highly durable, a 50mm body with a 7mm shackle might still be slightly too small to fit securely over the massive heavy-duty locking bars of a commercial shipping container. For shipping containers, you should look at the larger 64mm Master Lock Excell.

How many keys does it come with?

This highly secure 50mm brass padlock is traditionally supplied factory-sealed from Master Lock with two (2) precision-cut brass keys.

What does 'Dual Locking Levers' mean?

Cheap padlocks use a single, spring-loaded latch to hold the shackle down. Dual locking levers physically lock into deep notches on BOTH sides of the steel shackle, making the lock completely immune to being violently pried or hammered open.

Is it difficult to pick the lock?

It is highly resistant to covert entry. The internal cylinder features a precision 4-pin tumbler design. This makes it incredibly difficult and highly time-consuming for thieves to 'pick' or 'bump' the lock open without the original key.

What does 'Shackle Clearance' mean?

Shackle clearance is the vertical empty space between the top of the lock body and the inside curve of the metal loop. This lock has a 25mm clearance, meaning it provides plenty of room to slip over thick chains or standard metal latches.

Will the shackle rust?

The shackle is made of Hardened Steel, which provides massive cut resistance but can eventually show surface rust if left in driving rain constantly. The solid brass body, however, will absolutely never rust.

Can I get multiple locks 'Keyed Alike'?

This specific retail SKU (FM8850DAU) is typically sold 'Keyed Differently' (each lock has its own unique key). If you require multiple 50mm locks that all open with the exact same key, you must look for a specific 'KA' (Keyed Alike) multipack or contact a locksmith.

Is it heavy to carry?

At 50mm wide and cast from solid brass, this lock has a very substantial, heavy weight. It is designed to hang permanently on a gate or heavy toolbox, rather than being carried around in a backpack.

Do you offer trade pricing for builders?

Yes, Freshway Supplies provides highly competitive volume pricing and trade accounts for commercial builders, fencing contractors, and facility managers ordering bulk outdoor security locks. Contact us to establish your account.

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