raimundo wrote:Oh sure, I know the type, two inch swing bolt, often found with a kawneer cylinder on it. they come in a couple of different widths for the aluminum frame glass doors. theres even a swing bolt with a hook to grab into the strikeplate version, like a slideing door lock.
its the boltwork, the lock is the cylinder that operates it.
raimundo has the correct answer.
To elaborate, the MS+1850A series was the first industry lock to use an armored multi layer laminated steel 3 inch latchbolt/hookbolt which would deadlock (by means of a hooked end) into the door frame or the other door in case of double thin aluminum doors on the front of a office or store front. An armored strike plate is also included with the MS series locks.
"The bolt is triply laminated steel with the center layer using alumina-ceramic core to defeat hacksaw attacks including rod-type super hacksaws."
Threshold and header boltwork rods can also be added to the lock for locking into the bottom of the door frame into the floor and above the door into the metal frame, (as well as the hook bolt into the side frame strike or the other swinging doors strike plate.
works cited:
Phillips, Bill.
The Complete Book of Locks and Locksmithing New York, McGraw Hill 2005 p. 280-290