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Compare S&G Mechanical Combination Locks
Model 2937
The S&G model 2937 lock is a UL® Group 1 lock designed to meet the recent federal specification FF-L-2937. The model 2937 offers rugged all metal- 3 wheel construction, twenty man-hours of resistance to expert manipulation, and stainless steel bolt strong enough to resist 600lbs of force. It comes standard with Spy-Proof® dial for added dialing security. The model 2937 installs and operates like all other S&G three wheel locks to ensure easy retrofits and new installations alike. Download Brochure
Model 6630
The 6630 is a UL Listed Group 2M lock, which indicates it has a moderate level of resistance to expert manipulation. It's high quality construction includes three brass and aluminum combination wheels and a brass roller lever. The lock conforms to S&G's Magic Module® footprint for ease of mounting.
Model 6642
The 6642 is UL Listed Group 2 with *0.5 number dialing tolerances for increased security. It features a die cast Zamak lever and three brass, aluminum and Zamak combination wheels. The lock conforms to S&G's Magic Module footprint for ease of mounting.
Model 6643
The 6643 is a UL Listed Group 2 with push/pull Zamak roller lever. It features four brass, aluminum and Zamak combination wheels. The lock conforms to S&G's Magic Module® footprint for ease of mounting.
Model 6730
The standard of the industry, this venerable UL Listed Group 2 lock has 0.5 number dialing tolerances for increased security. It features a brass lever, three brass and aluminum combination wheels, and it conforms to S&G's Magic Module® footprint for ease of mounting.
Model 6731
This is the four-wheel version of the 6730, with 0.5 number dialing tolerances for increased security. It features brass and aluminum combination wheels, a brass lever, and it conforms to S&G's Magic Module® footprint for ease of mounting.
Model 6741
This UL Listed Group 2 lock has 1.25 number dialing tolerances to make it easier to dial open. It features a die cast Zamak lever and three brass, aluminum and Zamak combination wheels. The lock conforms to S&G's Magic Module® footprint for ease of mounting.
Model 8400
The 8400 series includes models that are UL Listed Group 1 and 1R with a 20-hour manipulation resistance rating. The locks feature brass levers, three brass and aluminum combination wheels, and conform to S&G's Magic Module® footprint for ease of mounting. They are easily recognized by the presence of a turn knob in the middle of the dial.
Model 8500
The 8500 series includes models that are UL Listed Group 1 and 1R with a 20-hour manipulation resistance rating. The locks feature brass levers, three brass and aluminum combination wheels, and conform to S&G's Magic Module® footprint for ease of mounting.
Vault Locks
S&G has been making vault locks longer than anyone in the business today. These mechanisms are UL Listed Group 2, Group 2M Recognized Component, and Group 1. Every model has a solid brass lever and four all-brass combination wheels. The extra heavy duty construction is designed to push and pull bolt attachments with ease.