Engineering and Expeditionary Warfare Center

High Security Padlocks


Introduction to High Security Padlocks


The S&G 951 high security padlock has been tested and approved meeting military specification MIL-DTL-43607 and is available from DLA Troop Support.

High security padlocks are intended for general military use with high security hasps where a high degree of physical security is required as specified by Enclosure 5, paragraph 2.g.(2) of DoD Manual 5100.76.  The number of keys for a high security padlock are limited to one control key and two operating keys as specified in paragraph of military specification MIL-DTL-43607.  Furthermore, Enclosure 4, paragraph 10.b of DoD Manual 5100.76 requires that the number of keys be held to an absolute minimum.

High security padlocks are covered by military specification MIL-DTL-43607, "Padlock, Key Operated, High Security, Shrouded Shackle".  High security hasps must conform to military specification MIL-DTL-29181, "Hasp, High Security, Shrouded, For High And Medium Security Padlock".  Please visit our High Security Hasps page for more information on high security hasps.

The DoD Lock Program can provide servicing and demilling of S&G 833C and 951 high security padlocks.  Please visit our High Security Padlock Field Support page for more information.  You may also want to review S&G 951 High Security Padlock Servicing Instructions or Technical Data Sheet TDS-2043-SHR (S&G 833C High Security Padlock Operation and Maintenance Instructions). 



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