PRIMUS CONSTRUCTION CORE

RELATED FAQS

Question
Answer
The letters GD, HD, BD, or BDC should be put after the lock function. EXAMPLE: ND53BD GD = Schlage SFIC core HD = Construction core BD = Less core BDC = Plastic temporary construction core
Schlage does not offer a plastic (disposable) Full Size Construction Core.   
This only applies to the full size interchangeable cores.  The SFIC mortise cylinders have part numbers for housings with construction cores (Disposable and Keyed).  Simply add (-ICX) to the end o...
2021 Update: An updated version of this knowledge entry can be found by clicking HERE.       Part numbers for Schlage and Falcon cylinders for Von Duprin device...
  FALCON   Mortise Rim KIL Conventio...
    If unclear whether mortise, rim, or key-in-lever is needed, reference links below to determine what cylinder type is needed.   In order to determine cylinder type n...
 DESCRIPTION PART NUMBER   Conventional Core  23-030  Conventional Core less logo  23-031  Primus Core  20-740  Primus XP Core  20-740-XP  Primus Core less logo  20-741 ...
The ND85/AL85/A85 hotel lock is only available in a conventional Key-in-Lever cylinder.  Interchangeable core and Primus are not available with this function. 
A Primus Hotel cylinder (as well as an IC hotel cylinder) is not possible because there isn't enough room inside the cylinder for all of the required components. 
Primus is only available in 6 pins in a conventional key-in-lever or full size interchangeable core designs.
Yes, 4" butt hinge preparations are available as an option on hollow metal doors and frames as noted below: Hinge type: square corner with commercial hole pattern. Preparations for radius c...
No, steel stiffeners are not required in Hollow Metal doors, they are one of many optional core available. Per ANSI/SDI A250.8 and ANSI/HMMA 867, core construction are optional o...
Thermal Bow is a temporary condition which occurs in metal doors mainly due to the temperature differential from one side of the door to the other. This may occur in exterior doors when direct sun ...
Any SFIC core will operate in the C987.  Specifically, the Schlage temporary cores are the 80-035 GRN and 80-035 BRN.
Use the cylinder suffix 'T' for full size interchangeable core or the cylinder suffix 'HD' for small format interchangeable core, see Figure 1.  Small format also has a disposable core option ...
A lock specified by a cylinder suffix BDC will be supplied with a disposable small format construction core, see Figure 1 below.  There is no metal key but instead the BDC cylinder has a ...
A small format disposable core is used as a SFIC construction core that is for low security applications and can be thrown in the waste bin after use.
Construction Core Program Policy: Full size and small format construction cores will be invoiced under standard payment terms. Credit for these cores, less the handling charge, will be issued upo...
Schlage offers a comparable cam to the Yale 2160 and it will operate any Yale lock that utilizes the Yale 2160 cam.     Schlage Cams for Yale 2160  Part Number  Description  B520-7...
Insulated Core Options: Steelcraft L-Series doors are available with the following 2 optional insulated cores: Polystyrene slab - this core is available in non fire rated and fire rated doors...
These references are from an old and outdated SDI 100 specification. The new specification SDI 100 ANSI A-250.8 does not contain letter designations for core material. Core constructions designat...