Master Lock 7630D and 7640D Combination Padlocks
3-Digit and 4-Digit Resettable Combination Padlocks
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Features
Master Lock 7630D and 7640D Resettable Combination Padlocks
Choose between the compact 7630D three-digit padlock and the larger 7640D four-digit padlock. Both provide keyless access with user-resettable combinations and aluminium bodies for compatible lockers, cupboards, toolboxes and general indoor storage.
The principal differences are the number of code digits, body width and shackle dimensions. A four-digit mechanism provides more possible combinations, but neither model should be selected without checking the fitting.
Which Model Should You Choose?
- 7630D, three-digit: 30 mm body and 5 mm shackle. A compact choice where the locking point has limited space.
- 7640D, four-digit: 40 mm body and 6 mm shackle. Provides a wider horizontal opening and more possible codes.
- Both models: resettable combinations, aluminium bodies and single-locking steel shackles.
Measure the hole in the hasp, then check the available vertical and horizontal shackle clearance. The longer code on the 7640D does not, by itself, establish a particular security rating.
Use, Resetting and Care
These are practical keyless padlocks for compatible indoor storage fittings. Change the combination only by following the instructions supplied for the selected model. Record the new code securely: a forgotten user-set combination can interrupt access.
Keep the dial and shackle clean, inspect the locking point periodically and choose a more suitable specialist product for demanding outdoor or high-security applications.
Specification
Specification sheetMaster Lock 7630D and 7640D Specifications
Compare the supplied technical dimensions before choosing a padlock. All measurements are in millimetres.
| Specification | 7630D | 7640D |
|---|---|---|
| Combination | 3-digit, resettable | 4-digit, resettable |
| Possible codes | Up to 1,000 | Up to 10,000 |
| Body material | Aluminium | Aluminium |
| Body width | 30 mm | 40 mm |
| Shackle | Single-locking steel | Single-locking steel |
| Shackle diameter | 5 mm | 6 mm |
| Vertical shackle clearance | 25 mm | 26 mm |
| Horizontal shackle clearance | 14 mm | 22 mm |
Fitting guidance: measure both the hasp opening and the space around it. Confirm that the padlock body can hang freely and that the combination dials remain accessible.
The linked 7640D manufacturer specification sheet (PDF) provides further information for the four-digit model. Verify the 7630D dimensions against its own product documentation when a close-tolerance fit is required.
Master Lock Resettable Padlock FAQs
Can I change the combination on either padlock?
Yes. Both the 7630D and 7640D have user-resettable combinations. Follow the instructions supplied with the model and retain a secure record of your code.
Which model is better for a small locker hasp?
The 7630D is more compact, with a 30 mm body and 5 mm shackle, but the correct choice depends on the hasp hole and available clearance.
What is the difference between the three-digit and four-digit models?
The 7630D offers up to 1,000 combinations with a 30 mm body, while the 7640D offers up to 10,000 combinations with a 40 mm body and larger shackle dimensions.
Are these padlocks suitable for outdoor use?
They are presented here for everyday and indoor storage use. For persistent rain, coastal exposure or demanding security conditions, select a padlock specifically rated for that environment.
Delivery
Delivery Information
The approximate lead time is 5 Working Days.
Standard delivery is available to mainland UK addresses, Monday to Friday between 8:00 am and 5:00 pm.
Deliveries are kerbside only. Products may be delivered by a third-party pallet or specialist carrier using a suitable commercial vehicle.
The customer is responsible for providing suitable personnel and equipment to unload the delivery safely.
Please tell us before ordering about restricted access, specific delivery dates or times, FORS requirements or other special delivery arrangements. These may be available at an additional cost.