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
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...
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.