Stanley Best SFIC Double Deadbolt – How to Remove & Troubleshoot

Source: https://www.bestaccess.com/products/t-series/

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If your original key turns freely 360°, the inside tailpiece is most likely broken. This usually happens when:

  • You push the door too hard to lock it.

  • The deadbolt contacts the strike plate, which may need adjustment for smooth operation.

Why Stanley Best T-Series Tailpieces Break

The T-Series tailpiece in Stanley Best double deadbolts is made of very thin material.

  • On single deadbolts, breakage is rare.

  • On double deadbolts, it’s much more common.

  • Similar thin tailpieces are also used in some Schlage locks, which can break under repeated stress.

Step-by-Step: Removing a Stanley Best SFIC Double Deadbolt

  1. Get a control key first – this allows the faceplate to come off more easily.

  2. Remove the two screws located at 9 o’clock and 3 o’clock positions.

  3. Take out the deadbolt.

    • If the inside tailpiece is broken, use a screwdriver to carefully open it.

Note: Original Best T-Series double deadbolts are Grade 1, high-quality locks. Prices in Canada range from $400–$700 CAD plus taxes. Special orders may take up to 12 weeks.

Alternatives & Stock Options

Many import companies carry single and double SFIC/LFIC deadbolts that are Grade 2, sufficient for commercial use, with UL fire-rated latches. These locks typically cost $150–$250 CAD and are often available in stock.

Who Uses Grade 1 Locks?

Grade 1 locks are preferred by institutions requiring maximum security:

  • Hospitals, schools, public transit, and American retail stores like Marshalls, HomeGoods, Walmart, Home Depot, Nike, Lowe’s, Staples, Macy’s, Costco, Target, Best Buy.

  • Government institutions in Canada and the USA.

In Canada, many companies opt for low-cost products due to budget or multicultural sourcing. In the USA, locksmiths and institutions often choose high-quality, expensive materials for durability.

Popular American Brands

Some widely used brands in North America:

  • Assa Abloy Group, DETEX, Entek, Adams Rite, HES, Don Vonprina, Yale, KABA-ILCO (Canada), Dorma-Kaba (US), Corbin-Russwin, Baldwin, LCN, Norton, ABH, Pemko, Marks, Jackson, CRL

Need Help with Your Stanley Best Deadbolt or Any Locksmith Job?
Call Shay Locksmith Montreal at 514-836-9097 or email info@serruriermontreal.com.
We handle all commercial and residential lock services with fast, reliable solutions.