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What are the measurements of this key. I need to know if it fits correctly into the keyhole for my lock, which is 3/16" square.

Security, Architectural & Storefront
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DK Hardware 2026-09-15 - 12:32:57
Technical Team

Your 3/16" square keyhole will accept the L9040/L9440 emergency turn key without issue. If your lock is a Schlage L9000 series mortise lock, you can confidently use these emergency turn keys.

Product Details

L9040 and L9440 Emergency Turn
L583-233Schlage Lock L583-233 L9040 and L9440 Emergency Turn
(1)
$30.63/Each

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