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Tools and Training for Security Professionals™



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3-Wheel Lock, Spy Proof Dial & Ring, Black & White, Pkg

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Do you need more than we currently have in stock? Contact sales at sales@mbausa.com or 1-888-622-5495 for availability.


Product Description

This Sargent & Greenleaf mechanical combination lock package includes a model 6730 lock body, a D220 dial, and a R167 dial ring.

The black and white dial is top reading (Spy Proof) with a spindle length to accommodate doors up to 3-1/2” thick.

The Model 6730 is the venerable standard of the industry for mechanical safe locks. This UL 768 Group 2 listed lock features a brass lever and three brass and aluminum combination wheels.

Includes spline key, change key and mounting hardware.

  • Patented S&G torque adjuster enhances security by maintaining proper wheel pack tension.
  • Integral relocker thwarts forced entry attacks.
  • Brass four-way drive cam allows mounting all four common mounting patterns (RH, LH, VU, or VD).
  • Metal wheels (brass and aluminum) for long, dependable life
  • Brass lever
  • Comes with change key
  • Can be used with a variety of S&G dials and dial rings.
  • Uses the industry standard footprint to match the mounting dimensions of most modern mechanical and electronic safe locks.


 To download Installation Instructions for the SG6730-102, click here.


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Product Reviews

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  1. Straightforward

    Posted by Unknown on 17th Oct 2017

    I bought this to replace a LaGard 4200 electronic lock on a Winchester safe sold by Tractor Supply that was still functional but I decided to replace because of their history of failures. The replacement was relatively straightforward and instructions were good.

    I did not need one, but 1 or 2 extra brass spline keys ought to be included in the package. They would cost next to nothing for the manufacturer to include in a $90 lockset. They are single use and if you need to adjust after initial installation, you would have an open safe until you were able to locate a new one. They are ridiculously priced to buy separately ($1.35 each), but I would recommend including at least one extra in your order.

  2. Great Price and Top Notch Service!

    Posted by Carl Parker Tucson, Arizona on 28th Jan 2016

    S&G has always put out quality products but the real praise goes to MBA USA they have VERY knowledgable employees and take care of their customers even after the purchase is done and over! MBA USA great prices and great service!!!

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