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Master #37 Laminated Padlock


  • Armored hardened steel shackle defies cutting.
  • 1-9/16" (40mm) laminated steel body for superior strength.
  • 4-pin tumbler cylinder helps prevent picking.
  • Shackle guard protects against bolt cutters and hacksaws.
  • Ideal for securing trailers, cables and chains.
  • Shackle fits openings 1/2" (13mm) in diameter or larger; removable shackle sleeve accommodates openings 9/32" (7mm) in diameter.
  • Shackle length is 7/8"
  • Each lock comes with 2 keys.

MSRP = $17.35 / $18.54 for Keyed-Alike

The Master 37 padlock takes a tried and true Master laminated lock and adds a guard on the pivoting end of the shackle. This design makes it very difficult to reach the shackle with bolt cutters or hacksaws. In addition the Master 37 has a shackle sleeve that allows a better fit on door hasps, etc.

You can now order this lock as a Special Order with a number of additional options available.
For Special Orders, you can match the lock to an existing Master K1 key you already have, pick your bumper color, have the key number printed on the lock, add Bump Stop® and order extra keys. Special Orders will be drop shipped directly from Master Lock and generally ship in about 14 days.
Click here to place a special order.

Uses a Master K1 Key and can be matched to many other Master Lock products in our inventory: see our section on "Keyed-Alike Locks".
Master K1 Keyway Comes with 2 Keys
Available in Keyed-Alike sets (specify below).

Add to Cart:

  • Model: MA-37
  • Shipping Weight: 0.7lbs
  • Manufactured by: Master Lock

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