NRM Solid Brass Padlocks
REAL NRM solid brass padlocks combine a corrosion-resistant brass body, heat-treated hardened shackle and built-in drain hole. Compare NRM30, NRM40, NRM50 and NRM60 dimensions, with keyed-alike, keyed-different and master key systems for B2B lock projects.
Solid brass padlocks for B2B lock projects
The NRM series offers four models with different body dimensions and shackle clearances. The solid brass body provides corrosion and rust resistance, while the heat-treated shackle and built-in drain hole support practical locking requirements.
Compare the shackle diameter and internal clearance against your hasp or locking point before selecting a model. Keying arrangements can be planned for single-key convenience, separate access or master key management.
NRM series highlights
- Solid brass lock body.
- Heat-treated hardened shackle.
- Built-in drain hole to discharge internal water.
- Four models: NRM30, NRM40, NRM50 and NRM60.
- Two shackle-clearance configurations for NRM40 and NRM50.
- Keyed alike, keyed different and master key systems supported.
NRM padlock dimensions
All dimensions are in mm. Letters A–G correspond to the dimension drawing. Paired values indicate alternative configurations, not an adjustable shackle.
| Dimension / specification | NRM30 | NRM40 | NRM50 | NRM60 |
|---|---|---|---|---|
| Total height A | 47.9 | 60.7 / 93.7 | 70.6 / 120 | 83.1 |
| Body height B | 27.3 | 32.7 | 38 | 39.1 |
| Body width C | 29.4 | 38.5 | 48.4 | 58 |
| Body thickness D | 12.4 | 14.1 | 16.5 | 16.5 |
| Shackle clearance E | 15.6 | 21.9 / 54.6 | 25.6 / 75 | 35 |
| Shackle inside width F | 15.5 | 21.7 | 28.1 | 32.6 |
| Shackle diameter G | 5 | 6.35 | 7 | 9 |
| Number of pins | 4 | 5 | 5 | 6 |
For NRM40, total heights 60.7 / 93.7 correspond respectively to clearances 21.9 / 54.6. For NRM50, heights 70.6 / 120 correspond respectively to clearances 25.6 / 75.
Body: solid brass. Shackle: heat-treated hardened. Built-in drain hole. Confirm the selected model and keying configuration before ordering.
Keying and shackle options
- Keyed alike (KA): arrange multiple locks to use the same key.
- Keyed different (KD): specify separate keying for individual locks.
- Master key system: discuss the access groups and master key requirements for your project.
- NRM40 shackle clearance: 21.9 or 54.6 mm.
- NRM50 shackle clearance: 25.6 or 75 mm.
Confirm the model, shackle configuration and keying plan with REAL before ordering. See Master Key & Keying System Solutions.
How to specify your NRM padlock
- Provide the hasp opening, required shackle clearance and space available for the lock body.
- Select NRM30, NRM40, NRM50 or NRM60 using dimensions A–G.
- For NRM40 or NRM50, specify the required clearance.
- State KA, KD or master key requirements and the number of access groups.
- Provide quantity, delivery country and exposure conditions for configuration review.
NRM brass padlock FAQ
What is the lock body made of?
The NRM series uses a solid brass body with corrosion and rust resistance.
Can the locks be keyed alike or master keyed?
Yes. The specification supports keyed alike, keyed different and master key systems. Confirm the required keying plan before ordering.
Which models offer a longer shackle clearance?
NRM40 offers 21.9 or 54.6 mm clearance; NRM50 offers 25.6 or 75 mm. These are alternative configurations.
Does the padlock have a drain hole?
Yes. A built-in drain hole allows internal water to discharge. Share the intended exposure conditions for selection advice.
What information is needed for a quotation?
Provide the model, shackle clearance, keying requirements, quantity and delivery country.