Padlocks with codes serial numbers#

The padlock’s combination is recycled after every 1,536th serial number. The first serial number in this range “A30001” has an assigned combination of 38-04-22.

Padlocks with codes serial numbers#

The second point is that a repeating pattern exists in serial numbers A30001-A39750. The first point is that the combinations assigned to serial numbers A30001-A39750 are identical to the combinations assigned to serial numbers B30001-B39750 in the B-series. Two interesting points emerge when examining A-series serial numbers A30001- A39750. The serial number for this padlock is A13825 with a matching combination of 30-04-30. Knurled dials are also used with V- and X-series padlocks. Instead of “Master” the word “Champ” is stamped on the dial of some Aseries padlocks.Ī-series padlocks have knurled dials to assist with turning. Pictured below is an A-series Master Lock combination “Champ” padlock – model

The remaining pages in this book list Master Lock combination padlock serial numbers on the left side of the column with their corresponding combinations on the right.

Then, turn right to the third number and pull the shackle open. Next, rotate the dial left one complete turn past the first number, stopping at the second number. To open the padlock, rotate the dial right two or more turns, stopping at the first number.

However, a Master Lock combination padlock may not include the letter as part of its serial number.