Master Lock
Master Lock has been making padlocks and security hardware since 1921. Nearly every keyed lock it sells carries a code, and a replacement key can be cut from that code alone. Everything we stock for those locks is here.
The code is stamped on the lock itself, usually on the back of a padlock body or the face of a cabinet lock. Padlock keys cover the laminated, brass and disc padlock lines. Office furniture keys cover desks, files and cubicle storage. Key blanks suit locksmiths cutting their own. Everything else is cut from our general Master Lock keys.
Can't find what you need? Contact us by phone, email or live chat. Our US-based customer service team is here to help.
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Master Lock J4U42 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U42 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U43 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U43 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U40 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U40 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U41 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U41 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U39 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U39 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U36 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U36 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U38 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U38 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U37 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U37 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U35 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U35 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U34 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U34 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U33 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U33 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U32 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U32 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U30 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U30 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U31 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U31 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U29 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U29 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U28 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U28 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U27 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U27 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U26 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U26 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U25 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U25 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U24 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U24 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U22 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U22 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U21 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U21 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U23 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U23 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U20 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U20 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U19 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U19 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U18 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U18 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U17 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U17 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U16 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U16 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U12 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U12 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U06 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U06 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U15 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U15 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U13 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U13 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U14 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U14 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U11 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U11 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U10 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U10 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U04 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U04 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U07 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U07 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U09 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U09 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U05 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U05 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U08 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U08 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U03 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U03 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U02 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U02 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U00 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U00 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J3U99 Padlock Replacement Key
Master LockPadlock Replacement Key with code J3U99 for Master Lock Key Series J3U01 - J3U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Master Lock J4U01 Padlock Replacement Key
Master LockPadlock Replacement Key with code J4U01 for Master Lock Key Series J4U00 - J4U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
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Original price
$8.87
$8.87
-
$8.87
Current price
$8.87
Original price
$8.87
-
Original price
$8.87
Original price
$8.87
$8.87
-
$8.87
Current price
$8.87
Master Lock J3U98 Padlock Replacement Key
Master LockPadlock Replacement Key with code J3U98 for Master Lock Key Series J3U01 - J3U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
View full details
Original price
$8.87
-
Original price
$8.87
Original price
$8.87
$8.87
-
$8.87
Current price
$8.87
Original price
$8.87
-
Original price
$8.87
Original price
$8.87
$8.87
-
$8.87
Current price
$8.87
Master Lock J3U97 Padlock Replacement Key
Master LockPadlock Replacement Key with code J3U97 for Master Lock Key Series J3U01 - J3U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
View full details
Original price
$8.87
-
Original price
$8.87
Original price
$8.87
$8.87
-
$8.87
Current price
$8.87
Original price
$8.87
-
Original price
$8.87
Original price
$8.87
$8.87
-
$8.87
Current price
$8.87
Master Lock J3U96 Padlock Replacement Key
Master LockPadlock Replacement Key with code J3U96 for Master Lock Key Series J3U01 - J3U99. Compatible with Manufacturers: Master Lock! Compatible with Manu...
View full details
Original price
$8.87
-
Original price
$8.87
Original price
$8.87
$8.87
-
$8.87
Current price
$8.87