Master Lock Padlock 1-9/16 Brass Keyed to 3900

- Ideal for marine and other harsh environments.
- 1-9/16 (40mm) wide laminated brass body offers excellent corrosion resistance.
- 9/32 (7mm) diameter hardened steel shackle for superior cut resistance.
- Dual locking levers provide extra pry resistance.
- Non-rekeyable, 4-pin W1 cylinder helps prevent picking.

Master Key: All No. 4 Master Key padlocks (4MK) will come with 2 keys but Master Keys are Sold Separate. 

Special Ordering: If you require the No. 4 Padlock keyed to an existing key number please leave a note in the Comments Box upon checkout (you can also immediately reply to the Confirmation E-mail with special order instructions).