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McMaster part numbers

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jimzcatz

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Does anyone know the part numbers for the 54 and 75mm external spiral thrust rings from McMaster?
 

patelldp

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38mm: 91665A510
54mm: 91665A560
76mm: 91665A630
 

djs

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I got 2-3 spare 54 if anyone wants them. Free if you pm me your address
 

djs

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Also a general note- I don't know about the 75mm ones, but the 54s have to be ground down a little bit to fit in an aeropack retainer
 
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