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High Security Padlocks

Interchanging parts between the older S&G 833C High Security Padlock and the newer 951 High Security Padlock (S&G 951 and PACLOCK PL951) will cause the locking systems to malfunction and not operate as designed.  See the identification document below for reviewing the differences. 

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.  High security padlocks are covered by military specification MIL-DTL-43607J, "Padlock, Key Operated, High Security, Shrouded Shackle".  The number of keys for a high security padlock are limited to one control key and two operating keys as specified in paragraph 3.6.3.4 of MIL-DTL-43607J.  Enclosure 4, paragraph 10.b of DoD Manual 5100.76 requires that the number of keys be held to an absolute minimum.

High security hasps must conform to military specification MIL-DTL-29181D, "Hasp, High Security, Shrouded, For High And Medium Security Padlock".  Visit our High Security Hasps page for more information on high security hasps.

The S&G 951 and PacLock PL951 high security padlocks have been tested and approved meeting military specification MIL-DTL-43607J and are available from DLA Land and Maritime.  Click on the Ordering Information tab for NSNs and information on how to procure these locks.  The S&G 833C is the other high security padlock that meets MIL-DTL-43607J and is approved for use, however, it is no longer manufactured.  Due to the age of the 833C High Security Padlock (30 plus years) and the lack of parts support, a transition plan to the newer 951 High Security Padlock versions is highly recommended. 

The DoW Lock Program can provide servicing and demilling of S&G 833C and S&G 951 high security padlocks.  Click on the High Security Padlock Services tab for more information. 

 

Instructional Documents

833C vs 951 High Security Padlock Model Identification document

S&G 951 High Security Padlock Servicing Instructions

PacLock PL951 High Security Padlock Servicing Instructions

High Security Padlock Conversion Instructions for Shipboard Use

TDS-2043-SHR Technical Data Sheet for S&G 833C High Security Padlock

S&G 951 Padlock
S&G 951 High Security Padlock
PacLock PL951 Padlock
PacLock PL951 High Security Padlock
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