Allegion
Terms of Use
Privacy Policy
Frequently Asked Questions
Ask your question
Entering your question as a complete sentence will provide more accurate results than keywords or phrases.
User questions
FAQs
Category List
“
Tailpiece for D series lever
”
RELATED FAQS
Question
Answer
What is the length of a cylindrical tailpiece?
Resolution:
Key-in-lever tailpieces differ in length depending on the lock series, function, and design. Click here to identify the tailpiece and length. NOTE: Modular ...:
Why does my AD or CO series lock unlock when the lever is raised?
Resolution:
Installers have reported that their AD-CO Series cylindrical or mortise locks will unlock whenever the outside lever is lifted. This will occur if the outside spindle (square post) is install...:
What is the part number for T lock tailpiece used with a conventional cylinder?
Resolution:
The Falcon T series was discontinued August 12th, 2026 and was replaced by the Falcon TM series. Refer to Table 1 for a list of T lock tailpieces for conventional cylinders. Table 2 show...:
What is the part number for a key in lever tailpiece for the ND lock?
Resolution:
For modular designs: All functions except ND85 the tailpiece part number is N523-022. The ND85 tailpiece part number is N523-123. For non-modular designs: All functions except ND85 the t...: