Products · Combination locks
Combination padlocks for storage units
A four-dial mechanical lock removes the key from the transaction entirely — no keys to cut, issue, track or replace. Ten thousand codes, no battery and no electronics, for the tenant units most self-storage operators specify.
Choose your configuration
The decisions below shape the order. Pick what applies and we will confirm the rest with a sample.
- Code type
- 4-dial mechanical, 10,000 combinations
Four wheels, each 0-9. No battery, no key, no electronics. - Code setting
- Factory-set or user-resettable
Choose one model for the whole site so staff give the same instructions. - Body
- Zinc alloy or stainless steel
Model-dependent — confirmed per SKU, not applied to the family. - Shackle
- Hardened steel
Confirm shackle diameter and clearance against your hasp. - Environment
- Indoor, covered or exposed
For exposed and coastal units specify SS304 and confirm the finish. - Branding
- Laser logo and printed packaging
Body marking and box artwork confirmed before production. - Suits
- Short-term and self-service units
Where the facility does not want to handle keys. - Packaging
- White box · printed box · blister card · bulk pack
Cards and boxes produced to your artwork.
Specification
Category-level parameters. Model references and packing quantities are confirmed in the catalog and in your quotation.
| Type | Four-dial mechanical combination padlock |
|---|---|
| Combinations | 10,000 (four wheels, 0-9) |
| Power source | None — fully mechanical |
| Keys required | No |
| Code setting | Factory-set to your list, or resettable by the user on site |
| Body material | Zinc alloy or stainless steel, model dependent |
| Shackle | Hardened steel |
| Application | Self-storage unit doors, lockers, cabinets, lockers in gyms and workplaces |
| Manager access | Not available — a combination lock has no key cylinder |
| MOQ | From 500 pcs |
| Sample | From 5 days |
| Batch production | Around 30 days after spec and artwork confirmation |
| Trade terms | EXW · FOB · CIF · CFR · DDP |
No model references, prices or stock levels are published here. Where a parameter depends on the specific model, we confirm it for the model you order.
Fit and compatibility
- A dial combination lock fits the same hasp as a disc padlock, so it is a direct alternative on standard unit doors.
- Because there is no key cylinder, a manager key cannot open it. If staff need access, use a keyed cylinder on those units instead.
- For exposed outdoor units, confirm the body material and finish for the site — we will not describe the whole family as weatherproof.
- Send a photo of the door and hasp and we will confirm body size and shackle clearance with a physical sample.
Fit confirmed by sample, not by drawing. Send a door photo or your hasp dimensions and we will send a physical sample before you commit to a quantity.
Ordering information
The commercial terms for this family. They are confirmed with the quotation, so a re-order two years from now carries the same conditions rather than a new set.
- MOQ
- From 500 pcs
Heavy customization — a new mold, a special key system, printed blister cards — may require more. The exact figure is confirmed with your quotation. - Samples
- From 5 days
Sent so you can check fit and finish on your own door before committing to a quantity. - Batch production
- Around 30 days after spec and artwork confirmation
Peak periods such as Chinese New Year are flagged when you order. - Delivery terms
- EXW · FOB · CIF · CFR · DDP
More than one term can be quoted so you can compare what the goods cost against what the freight and duties cost. - Payment
- T/T · L/C · Credit card
A first order normally runs on a deposit with the balance against the documents or on shipment. - Documentation
- Spec sheet, inspection record, packing list, pre-shipment photos
Test records are issued per model and per finish, and are available for the model you order.
Tell us the quantity, the door type and the destination country and we will quote the configuration rather than a list price.
Options and customization
What can change without changing the product's identity.
Branding
Laser logo on the body, with printed boxes, blister cards or paper cards to your artwork.
Code setting
Factory-set models arrive with a code already set, ready to hand to a tenant. Resettable models let the tenant or manager set a new code on site.
Site standard
One model across every unit means staff give tenants the same instructions at every site.
Mixed with keyed families
Combination locks for self-service units and keyed cylinders for manager access, supplied on one order and one shipment.
Mixed orders
Dial combination locks, disc padlocks and cylinders consolidated into one shipment from Ningbo or Shanghai.
Quality and evidence
What you receive before the goods ship, and what stays on file.
SGS
Verified supplier
On-site audit completed October 2025.
ISO 9001
Quality system
Incoming, in-process and final inspection.
FAI
Code mechanism
Code mechanism and reset function confirmed before the full run.
100%
Code check
Each unit opened with its own code before packing.
Buyer questions
How many combinations does a four-dial padlock give?
Ten thousand — four wheels, each with ten positions. That is enough separation between units for a normal facility, provided the code is not left at the factory default.
Can the code be changed after installation?
It depends on the model. Resettable models let the tenant or the manager set a new code on site, which is what makes them practical between tenancies. Factory-set models arrive with a fixed code. Tell us which behaviour you want and we will confirm the model.
Are these suitable for outdoor units?
It depends on the model and the exposure, not on the family. Dial mechanisms are mechanical and do not fail from a flat battery, but the body and finish decide how the lock survives weather. Tell us where the units are and we will confirm the material and finish that applies — we will not describe the whole family as weatherproof.
Can a manager key open a combination lock?
No. A mechanical combination padlock has no key cylinder, so there is no keyway to master. If a manager has to enter units for inspection or an overlock routine, those units need a keyed padlock or cylinder on a master-key schedule. Many sites run both: combination locks on self-service units, keyed hardware where staff need access.
What happens if a tenant forgets the code?
On a resettable model a member of staff resets the lock on site. That is a support call rather than a replacement sale, so it is worth deciding the policy — and the charge, if any — before you standardise on this family.
Can the code be set before the locks are delivered?
Yes. On factory-set models the lock arrives with a code already set, so it is ready to hand to a tenant. Tell us the code you want and we will confirm it with the quotation. User-resettable models arrive open, with instructions for setting the code on site.
Related families:
Send us your door type and unit count
We will come back with a fit confirmation, a configuration and a price — typically within 4 business hours.