We Sell Those: Model 951/951C High-Security Padlock

For Government and Commercial Use

Designed to meet US military specification MIL-DTL-43607J, the Sargent & Greenleaf Model 951 High-Security Padlock incorporates the most advanced features and materials available for perimeter security. Specialized barrier materials in the lock body and shackle resist cutting, drilling, and sawing, and a shrouded shackle design prevents wedging attacks.

Model 951 includes a restricted keyway locking cylinder available only to authorized government agencies, but Model 951C has a non-restricted cylinder to deliver the same advanced features for commercial applications.


  • Control key for easy field disassembly or rekeying.
  • High-security Medeco® key cylinder.
  • Cast stainless steel body.
  • Advanced barrier materials in body and shackle.
  • Shrouded shackle with 5/8” clear opening.
  • Includes attached chain and devis.