S&G 951: Difference between revisions

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(Created page with "= Sargent and Greenleaf 951 = {{Lock model | name = S&G 951 | Img = File:S&G 951C.JPG | Img_size = 150px | maker = Sargent & Greenleaf | lock_type = Padlock, [[Cylind...")
 
m (see also: axial rotation)
 
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{{Lock model
{{Lock model
| name = S&G 951
| name = S&G 951
| Img = File:S&G 951C.JPG
| Img = File:S%26G_951C.jpg| Img_size = 150px
| Img_size = 150px
| maker = [[Sargent & Greenleaf]]
| maker = [[Sargent & Greenleaf]]
| lock_type = [[Padlock]], [[Cylinder]]
| lock_type = [[Padlock]], [[Cylinder]]
| lock_design = [[Pin-tumbler]]
| lock_design = [[Pin_tumbler |Pin-tumbler]]
| years_produced =  
| years_produced =  
| patent =  
| patent =  
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}}
}}


The '''No. 140''' is a [[pin-tumbler]] [[padlock]] made by [[Master Lock]]. The No. 140 is a solid body padlock with an inner cylinder that uses four pin stacks and contains spooled [[security pin]]s.
The '''951''' is a [[Pin_tumbler |pin-tumbler]] [[padlock]] made by [[Sargent & Greenleaf]]. The model 951 incorporates a restricted keyway locking cylinder and is 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.
 
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== Principles of operation ==
== Principles of operation ==


:''See also [[Pin-tumbler#Principles_of_Operation|Pin-tumbler (Principles of Operation)]]''
:''See also [[Pin_tumbler#Principles_of_operation|Pin-tumbler (Principles of operation)]]''


The No. 140 cylinder is a [[pin-tumbler]] lock with four pin stacks and one or more spooled [[security pin]]s in various chambers. Older versions of the lock use one spool pin in the third chamber. The No. 140 can only be opened by rotating the [[plug]] clockwise.


== Disassembly instructions ==
== Disassembly instructions ==


The No. 140 cannot be disassembled non-destructively; to disassemble it the lock must be sawed in half. The lock is nonfunctional once disassembled because the padlock body acts as the cylinder for the lock.


== Vulnerabilities ==
== Vulnerabilities ==


The 140s reduced pin-tumbler count and poor manufacturing tolerances allows it to be easily picked by low skill attackers despite having spool pins. It is commonly used in [[locksport]] groups and an introductory lock for beginners to learn about defeating security pins. The No. 140 may be vulnerable to one or more of the following:
The 951 may be vulnerable to one or more of the following:


* [[Lockpicking]]
* [[Lockpicking]]
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== See also ==
== See also ==


* [[Pin-tumbler]]
* [[Axial rotation]]
* [[Pin_tumbler |Pin-tumbler]]
* [[Padlock]]
* [[Padlock]]
* [[Master Lock]]
* [[Medeco]]
* [[Sargent & Greenleaf]]


[[Category:Lock models]]
[[Category:Sargent & Greenleaf|951]]
[[Category:Padlocks]]
[[Category:Pin-tumbler locks]]
[[Category:Pin-tumbler locks]]
[[Category:Padlocks]]
[[Category:Axial rotation]]
[[Category:Master Lock|No 1]]
[[Category:High security locks]]
[[Category:Lock models]]

Latest revision as of 22:40, 30 January 2023

Sargent and Greenleaf 951

S&G 951
S&G 951C.jpg
Name S&G 951
Manufacturer Sargent & Greenleaf
Lock Type Padlock, Cylinder
Lock Design Pin-tumbler


The 951 is a pin-tumbler padlock made by Sargent & Greenleaf. The model 951 incorporates a restricted keyway locking cylinder and is 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.


Principles of operation

See also Pin-tumbler (Principles of operation)


Disassembly instructions

Vulnerabilities

The 951 may be vulnerable to one or more of the following:

See also

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