Threaded Unipart Porcelain Insulators From the United States

Note:  Click on each insulator for larger pictures and more information!

U-862 through U-864 are multi skirted high power insulators

U-864 U-864B

U-865 through U-914 are single part high voltage styles.  These competed directly with the multipart insulators with Jeffery Dewitt as a major supplier.

U-866 U-878 U-893

U-893A   U-896 U-908

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