The Model 951/951C represents the most advanced security features found in any padlock. Constructed with special barrier materials inside the body and shackle to resist cutting and sawing, the Model 951/951C is ideal for perimeter security and any location where the highest level of resistance to forced entry is required—making it the ultimate padlock.
Model 951: Restricted keyway locking cylinder available only to authorized government agencies where the application requires a padlock that meets mil-spec MIL-DTL-43607J. (The National Stock Number is NSN 5340-01-217-5068.)
Model 951C: Non-restricted locking cylinder for commercial applications.
951 NSN: 5340-01-217-5068
951 Federal Specification: MIL-DTL-43607J