N-TBD: United States (USA)

4 3/8" (111mm)

 

(around shaft below threads)

GOODYEARS PATENT MAY 6 , 1851

 

Picture courtesy Elton Gish

Note this is not a pintype but a rams horn style that would mount under the crossarm with the metal hook to hold the wire.

Although hardened with time the insulation material is rubber.

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