Specifications include, but are not limited to: Manufacturers: a. Sargent Manufacturing (SA). b. No Substitution. Cylinders: Original manufacturer cylinders complying with the following: 1. Mortise Type: Threaded cylinders with rings and cams to suit hardware application. 2. Rim Type: Cylinders with back plate, flat-type vertical or horizontal tailpiece, and raised trim ring. 3. Bored-Lock Type: Cylinders with tailpieces to suit locks. 4. Mortise and rim cylinder collars to be solid and recessed to allow the cylinder face to be flush and be free spinning with matching finishes. 5. Keyway: Manufacturer’s Standard. Match Facility Standard. Match Facility Restricted Keyway. Permanent Cores: Manufacturer's standard; finish face to match lockset; complying with the following: 1. Interchangeable Cores: Core insert, removable by use of a special key; usable with other manufacturers' cylinders. 2. Removable Cores: Core insert, removable by use of a special key, and for use with only the core manufacturer's cylinder and door hardware. Provide removable core (small or large format) as specified in Hardware Sets.