Mechanical Combination Locks

Sargent & Greenleaf introduced its first combination lock in 1857 under the name Sargent's Magnetic Bank Lock. The lock was so impressive that it was used by the US Treasury Department. That early success was born of hard work, innovation, and craftsmanship. These traditions continue to this day, which is why S&G enjoys a solid reputation of dependable products and unequalled support. From Group 2 safe locks to rugged vault locks, S&G has set the standard others have tried to emulate for nearly 150 years.

Sargent & Greenleaf offers many dials and rings for 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. Details »
	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. Details »
	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. Details »
	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. Details »
	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. Details »
	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. Details »
	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. Details »
	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. Details »
	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. Details »
	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. Details »
	Dials and Rings Sargent & Greenleaf offers many dials and rings for mechanical combination locks. Details »
*Typical dialing tolerance is what you would expect in an installed lock. Theoretical dialing tolerance is always slightly greater (usually about ±0.4 numbers greater)