Master Lock ProSeries Laminated Steel Padlock
The Master Lock 3KA-3753 is a ProSeries laminated steel padlock offering commercial-grade security with a keyed-alike (KA) configuration. The 1-9/16 in. (40mm) reinforced laminated steel body provides extra strength against prying and drilling, while the W1 cylinder allows matching to other locks in the series.
Key Features
- Keyed alike — multiple locks open with the same key, or can be ordered to match other locks with the W1 cylinder
- Commercial-grade padlock with superior protection from drilling and prying
- 1-9/16 in. (40mm) wide reinforced laminated steel lock body
- 9/32 in. shackle diameter
Specifications
- Series: ProSeries
- Type: Tumbler Padlock
- Material: Steel (Laminated)
- Shackle Diameter: 9/32 in.
- Body Width: 1-9/16 in. (40mm)
- Overall Height: 2.44 in.
- Color: Silver/Black
- Keying: Keyed-Alike
Applications
Suitable for lockout/tagout (LOTO) programs, job site security, storage, gate locks, and any application requiring multiple locks that operate with a single common key. The W1 cylinder enables system-wide keyed-alike configurations.




