A standard 40-digit Master Lock has 64,000 combinations which would take the average human about 180 hours to crack by using random combinations.
A standard 40-digit Master Lock has 64,000 possible combinations that may open the lock.
If your lock does provide a serial number, the easiest way to retrieve your combination is to take your lock to any local Master Lock Distributor in your area; think of Wal-Mart, Home Depot, Lowes, etc.
By comparison, this 3-dial lock (three wheels, each with digits 0-9) has 10 × 10 × 10 = 1, 000 possible combinations. The total number of combinations is not very different, but the Simplex Lock is much harder to pick because it is harder to systematically test each possible combination.
Each lock is opened by its own unique key that does not open any other lock in the set. Keyed Different is the standard keying default on Master Lock and American Lock padlocks.
The 4-pin cylinder prevents picking and the dual locking levers provide resistance against prying and hammering.
Dual ball bearings locking for maximum pry resistance making it ideal for industrial applications and the non-rekeyable, 4-pin W1 cylinder helps prevent picking.
The first problem with these locks is the limited number of combinations. With 3 dials there are just 720 unique codes. So with averagely nimble fingers, which could test one number per second, that's a maximum of just 12 minutes to test every combination.
As we already discussed, the three digits numbers are from 100 (hundred) to 999 (nine hundred ninety-nine). Before we see the list of three digits numbers, first let us discuss how many three digits numbers we have from 100 to 999. Hence, there are 900 three-digit numbers in total.
Using digits '0' to '9'; you can generate (10^3) = 1000 three-digit numbers (including those starting with '0'); out of which one is going to click. So, the probability = (1 / 1000) = 0.001.
Apply Lubricant Into the Jammed Shackle and Dials
If the shackles or dials severely need lubrication, then they can get stuck and hold you back from opening your lock. Hence, lubricating the lock is one of the common ways to open a combination lock stuck closed.