These locks are the ultimate in a high security padlock. Designed for use on secure military arms and ammunition storage facilities, they are the ultimate in high strength padlocks. They are a great option for securing your gun safe or room, a remote homestead, or a business in a high crime area.
The S&G 833C is made up of proprietary alloys in the padlock body and shackle that give it extreme resistance to physical attacks. The body also has ceramic inserts which greatly reduce the ability to attack the padlock with a grinder. Its raised shoulders make attacking the shackle very hard when properly installed. It features a quick change breakdown function using the change key. It is the only lock that is meant to resist physical attack from even prolonged liquid nitrogen attacks. When the change key is inserted and turned, the body comes apart in two pieces allowing for access to the cylinder for replacement as needed. Below are the technical details (exact measurements given in mm):
4 11/16" (118mm) tall body
2 3/4" (70mm) wide body
1 13/16" (46mm) thick body
15/32" (12mm) thick shackle
27/32" (21mm) wide shackle clearance
13/16" (20mm) tall shackle clearance
It features two operator keys and one master control key that allows you to disassemble the lock for cleaning or to change the keyway.
These lock are used, but look to have been used very, very little.