Sound familiar?Drummond Heights
- The call
- The key still turns, but lately it spins a half-circle further than it used to before the little door lets go, and some mornings it takes a second try. The small cam lock inside is simply worn out.

After a winter of road spray and salt, the little lock on the mailbox door has gone stiff, then gritty, then almost immovable. Rust has crept in around the keyway, and the key barely turns anymore no matter how it is worked.
When the real concern is who else might hold a key, replacement settles it at the root. The old cylinder comes out, a new one goes in with a cam cut to match the compartment door, and two fresh keys are handed over on the spot. Whatever key was floating around before, lost, borrowed, or left behind by someone who moved out, stops working the moment the new lock is seated and tested.
Sound familiar?Drummond Heights
Mailbox Lock Replacement · Drummond Heights

Scene 1
The cylinder is measured from the face that sits flush with the compartment door to the back of the housing, and that length has to match the thickness of the material it passes through. Diameter matters just as much, since the hole already cut in the door will not change to fit a lock that is slightly too wide or too narrow. A tape measure and the old lock, still in hand, settle both numbers before a replacement is chosen, which is what keeps a swap to a single short visit.
Scene 2
Two keys are cut from blanks that match the new cylinder's keyway, using a key cutter rather than copying a worn original, so both keys operate crisply from the first use. Each one is tested in the lock directly, opening and closing the compartment door a few times, before either key leaves the locksmith's hand. If the household wants extra copies for a second adult or a family member picking up mail, those are cut and tested during the same visit rather than left for a hardware store later.
Scene 3
On a job arranged through a property manager or superintendent, the visit closes with a short account of what was done: which compartments were changed, how many keys went to each resident, and whether any doors were keyed alike on request. That note is handed to whoever coordinated the work, giving the building an accurate record instead of a guess about which locks are new and which are original to the panel.
What shapes the quoteDrummond Heights Locksmith Co.
FeesSame any hour
You generally do not need to; identifying the hardware is part of the visit. The locksmith reads the maker's mark on the lock face, measures the cylinder and cam, and checks the hole pattern in the compartment door, which together point to a matching replacement even when the original brand is no longer sold.
The cam is the small arm on the back of the lock that actually reaches the door frame and holds the compartment shut when the key turns. Two locks can share the same keyway and still fail on the same door if their cams differ in length or angle. Matching the cam to the one already in the compartment is what makes a replacement lock latch properly instead of sitting loose.
Two keys is standard, cut from blanks matched to the new lock and tested in the door before the visit ends. Additional keys for another household member, or for someone who collects mail while you travel, are cut on the spot if you ask, rather than needing a separate stop at a hardware store afterward.
NiagaraOntario
Mailbox Lock Replacement · Niagara Falls, Chippawa, Falls View
Every square is one home in a hundred.
On-site assessment
After a winter of road spray and salt, the little lock on the mailbox door has gone stiff, then gritty, then almost immovable.
(289) 271-0790, open 24/7.
On-site assessment preferred · (289) 271-0790, open 24/7