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Stainless steel cotter pin
Nov 29, 2016

Cotter pin diameter is the hole size the pin will fit. A 1/4" cotter pin fits in a 1/4" hole. 
However, in many applications a smaller pin is used.


Cotter pin stainless steel 

Diameter

1/32"


3/64"


1/16"


5/64"


3/32"


7/64"


1/8"


5/32"


3/16"


1/4"


5/16"


3/8"



Cotter pins,zinc plated steel


Diameter

1/16"


3/32"


1/8"


5/32"


3/16"


1/4"


5/16"


3/8"