Sigma replacement furniture and mailbox keys — ordered by code, cut before dispatch, delivered ready to use. Locate the alphanumeric code stamped on your Sigma lock barrel face or original key shaft and match it to the product listing. On Sigma filing cabinet and pedestal systems the code is visible on the barrel face when the drawer is open — on mailbox systems it appears on the lock face or key shaft. Every Sigma replacement ships cut to your exact code — no programming, no locksmith, no tools needed after delivery.
Products
How do I confirm I am on the correct Sigma furniture and mailbox keys page?
Every product listed on this page is a Sigma furniture and mailbox replacement ordered by code. The page is filtered to Sigma only — each listing corresponds to a specific Sigma lock cylinder code. Selecting the product that matches the code stamped on your Sigma lock barrel or key shaft guarantees the correct blade profile for your cylinder.
Are Sigma furniture and mailbox keys interchangeable with other brands?
No. Sigma furniture and mailbox keys are cut to codes specific to Sigma lock cylinders. Each manufacturer uses a proprietary blade profile system — a key cut to a Sigma code operates only Sigma cylinders. Physical similarity in blade shape between furniture lock brands does not indicate compatibility.
How do I read the code on my Sigma furniture or mailbox lock right now?
Locate the alphanumeric sequence stamped on your Sigma lock barrel face or original key shaft. On Sigma filing cabinet and pedestal systems the code is visible on the barrel face when the drawer or compartment is open. On Sigma mailbox systems it appears on the lock face or key shaft. Clean the surface with a cloth and inspect under a torch if dirt obscures the stamping. If unreadable, send a photo of your Sigma lock face to mr-key.com.
How do I order the correct replacement key for my Sigma furniture or mailbox lock step by step?
Locate the alphanumeric code on your Sigma lock barrel face or original key shaft. Enter it exactly into the drop menu on the matching product listing. Confirm the code matches before adding to cart. Every Sigma replacement listed here ships cut to that exact code — no programming required, no locksmith visit needed.
What if the Sigma furniture or mailbox key I received does not fit my lock?
Fit issues occur only when the wrong code is ordered. Verify the code entered at checkout matches the code stamped on your Sigma lock barrel or key shaft exactly. If the code was entered correctly and the key does not operate the lock, contact mr-key.com — the key is covered by a 12-month warranty and the issue will be resolved.