what changes on ND locks for thick doors?

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Only the chassis components are modified for thicker door applications, the lever and spindle assemblies remain intact.  The following parts may be modified depending on the function of the lock ...
Schlage ND-Series tailpieces for extended doors are available by only two means, but are not available to order separately.   If an extended tailpiece is needed, then a complete lock ...
The keycam may have failed, example here, the latest design keycam can be easily identified as the colored changed to black. Replace either the keycam or chassis as needed...
 This could also happen if the tailpiece isn't installed in a KIL, FSIC, or SFIC cylinder.  The FSIC driver also could have come loose from the core in the spindle.
As of February 2016, ND locks began shipping with a new latchbolt. The new latchbolt offers substantially improved performance in adverse door conditions (ex, with heavy door loading) andis more ro...
Prior to February 2016, using ND-Series locks on hollow metal doors required the use of latch spacers which prevent the latch from "fishtailing" (back end of latch moving from side to side). Latch ...
Most locks will have a standard door range they will install on, but occasionally customers will want to use them on thicker doors.  In order to do so, the extended door thick...
The easiest method to obtain an AL lock for a 2" door is to specify a 2" thick door when ordering.  
Part required by function:2 each A700-043 driver & A700-034** lever insert in addition to the chassis parts below:AL10S – 2 hubs A700-028AL25D – 2 hubs 1 A700-028 (inside), 1 A700-030 (outside)...
The lever removal tool can be used to remove levers in both the ND and the L Series mortise locks.
On August 15, 2012 Schlage began shipping a new, more ergonomic, lever removal tool to coincide with Phase 1 of the ND-Series improvement project.  This tool can be used for Schlage ND-Series ...
A 1 1/4" mortise cylinder with straight cam (similar to the Schlage B502-191) or a 1 1/2" mortise cylinder with straight cam using supplied spacer collar. Cylinder length does not chan...
The AL and ND locks are not available in any stainless steel finishes.  The only option is either the 626 satin chrome or 625 bright chrome.