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What is the 40-600?

The 40-600 conversion kit is the new style (after January 31, 2017) inside spring cage and lever kit for the ND series. This kit replaces inside spring cages and levers manufactured prior to February 1st, 2017 with the improved spring cage and lever.



The 40-600 (inside spring cage and lever kit) will include:
  • spring cage
  • lever ( type depends on function and cylinder option)
  • may include button or turn (40, 44, 50, 53, 73 and 85 functions)
  • may Include tailpiece for non-Schlage cylinder/core options (60, 66, 75 and 82 functions)
  • The kit will not include Schlage KIL, Schlage FSIC or SFIC drivers.


To order the 40-600, specify:
Lever type (closed, closed electric, open push button, open push/turn button, button 85 function, open KIL, open FSIC, open SFIC, open competitor cylinder/core: L-SAR, J-SAR, J-CO6, J-YA6) 
Lever style (ATH, RHO, OME, SPA, TLR)
Finish (605, 606, 612, 613, 619, 622, 625, 626, 643e)

Example: 
  • For ND50, specify 40-600 open push button RHO 626
  • For ND66, specify 40-600 open FSIC RHO 626
  • For ND85, specify 40-600 button 85 RHO 626

NOTE: Some non-Schlage cylinder core options are not available (LD-CO6, J-MED, J-CO7, J-YA7)



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