40mm brass padlock with chrome-plated shackle

Master Lock Combination Padlock 40mm Solid Brass 4-Digit Resettable Code 604DAU

Name: Master Lock Combination Padlock 40mm Solid Brass 4-Digit Resettable Code 604DAU
Brand: Master Lock
SKU: 604DAU
Price: 21.06 AUD
Availability: InStock

SKU 604DAU

By: Master Lock

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$22.80

$22.80 - $22.80

$22.80

$21.06

$21.06 - $21.06

$21.06

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

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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 40mm Combination Padlock (Solid Brass) – Keyless Combination Lock

Instantly secure critical domestic and commercial access points without the frustrating liability of constantly losing physical keys by deploying the highly reliable Master Lock 40mm Combination Padlock (604DAU). In high-turnover environments like school gymnasiums, staff locker rooms, and shared residential gates, physical keys are constantly lost, forgotten, or stolen, leading to agonizing lockouts and the massive expense of repeatedly cutting new keys. This premium keyless combination lock acts as the ultimate access management solution. It operates entirely via a robust, highly secure 4-digit numeric dial system, providing 10,000 unique possible code variations and ensuring that only authorized personnel can gain entry.

Engineered for unwavering durability and absolute worksite convenience, the 604DAU features a 40mm solid brass body. This heavy-duty construction provides formidable physical strength while being completely immune to rust, making it exceptionally reliable for both indoor lockers and outdoor gates. Fortified with a highly cut-resistant chrome-plated steel shackle, it aggressively deters opportunistic theft. The intelligent side-mounted dial design allows for rapid, one-handed operation even in dark, confined locker spaces, while the double deadbolt locking mechanism provides critical defense against violent prying and hammer strikes. This highly versatile brass padlock is the definitive, hassle-free security upgrade for modern facilities.

Who Is The Master Lock 40mm Combination Padlock Ideal For?

This 40mm padlock delivers keyless access, 10,000 code variations, and rust-proof solid brass construction. It is highly recommended for:

Gymnasiums & Schools: Utilizing a highly reliable keyless combination lock to perfectly secure personal lockers. It completely eliminates the massive administrative nightmare of students or gym members constantly losing physical keys.
Shared Residential Gates: Providing a secure, keyless entry point for side gates, allowing multiple family members, gardeners, or pool cleaners to access the property simply by knowing the 4-digit code.
Corporate Office Staff Lockers: Relying on the incredibly easy resettable combination feature to instantly change the access code when a staff member leaves the company, maintaining absolute security with zero cost.
Toolboxes & Utility Sheds: Deploying the highly durable, rust-resistant brass padlock to protect expensive power tools from opportunistic theft, ensuring quick access without hunting for keys.

Key Features and Performance Benefits:

4-Digit Resettable Combination: The ultimate keyless convenience. The lock features 4 numbered dials, giving you exactly 10,000 possible code combinations. You can easily reset the code at any time to a number you will remember, entirely eliminating the need for keys.
Solid Brass 40mm Body: Forged for survival. The heavy-duty 40mm body is cast from solid brass. This provides massive physical strength to survive hammer strikes, while being completely and totally immune to rust and weather corrosion.
Chrome-Plated Steel Shackle: The absolute deterrent against cutting tools. The 6mm thick shackle is forged from heavy steel and heavily chrome-plated, making it incredibly difficult for opportunistic thieves to cut with standard saws or small bolt cutters.
Double Deadbolt Locking Mechanism: Absolute brute-force resistance. This advanced internal mechanism locks BOTH sides of the steel shackle tightly, violently resisting aggressive prying and extreme pulling force.
Ergonomic Side-Mounted Dials: Designed for tight spaces. Unlike bottom-dial locks that are impossible to read on a gate, the side-mounted dials allow you to easily see and spin the numbers while the lock is hanging flush against a locker door.

Technical Specifications & Dimensions:

Brand: Master Lock
Model Number: 604DAU
Product Type: Combination Padlock / Keyless Combination Lock / Brass Padlock
Body Width: 40mm
Body Material: Solid Brass (Rust-Proof)
Shackle Diameter: 6mm (Chrome-Plated Steel)
Shackle Clearance: 26mm (Vertical Height)
Lock Type: 4-Digit Resettable Combination (10,000 combinations)
Locking Mechanism: Double Deadbolt

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 is the advantage of a 'Combination' padlock?

A combination padlock completely eliminates the need to carry physical keys. You unlock it by dialing a specific 4-digit code. This is incredibly convenient for gym lockers, school bags, or shared gates where multiple people need access without cutting 10 different keys.

How many possible code combinations are there?

Because the lock features 4 separate numbered dials (each with numbers 0-9), there are exactly 10,000 unique possible code combinations. This makes it mathematically incredibly difficult for a thief to 'guess' your code.

Can I change the combination to a number I want?

YES! The combination is fully 'Resettable'. When the lock is open, you follow the simple instructions included in the packaging to program your own unique, memorable 4-digit code (like a birth year or pin number). You can change it as many times as you like.

What happens if I forget my code?

If you forget your custom code and the lock is closed, there is absolutely no override key or 'master reset' button. For security reasons, you will be permanently locked out and will have to physically cut the shackle off to open it. Always write your code down in a safe place!

Is the Solid Brass body good for outdoor use?

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

What does 'Double Deadbolt Locking' mean?

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

Will the 6mm shackle fit my gym locker?

Yes, a 40mm body with a 6mm shackle is the absolute industry standard 'sweet spot' for personal security. It is thick enough to resist cutting, but thin enough to perfectly fit through the latch of almost every standard school or gym locker.

Why are the dials on the side instead of the bottom?

Side-mounted dials are vastly more ergonomic. When the lock is hanging from a locker or gate, you can look straight at the side and spin the numbers easily. Bottom dials force you to awkwardly twist the lock upside down to read the numbers.

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

Absolutely NOT. While it is highly durable, a 40mm body with a 6mm shackle is designed for residential gates, toolboxes, and lockers. It is NOT large enough or strong enough to secure massive commercial shipping containers. You need a 64mm Master Lock for that.

Are the numbers painted on or engraved?

On premium Master Lock combination padlocks, the numbers are deeply molded or engraved into the metal/plastic dials and then painted. This ensures the numbers will not simply rub off after months of sweaty fingers spinning the dials.

Is it difficult to spin the dials?

No. The precision-engineered dials click smoothly and satisfyingly into place, making it incredibly easy to rapidly dial your code even if you are in a rush or wearing light gloves.

Do you offer trade pricing for schools?

Yes, Freshway Supplies provides highly competitive volume pricing and trade accounts for educational institutions, commercial gymnasiums, and facility managers ordering bulk cartons of combination locks. Contact us to establish your account.

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