Threaded Unipart Porcelain Insulators From the United States

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

U-922 through U-937 are early classic styles including many glaze-weld versions

U-922 U-922A U-923 U-923A U-923C U-923D U-923E

U-923F U-923G U-924 U-925 U-926 U-926A U-926B

U-926C U-927 U-927A U-927B U-927C U-928

U-928A U-928B U-929 U-930 U-931 U-932

U-933 U-934 U-935 U-935A U-935B

U-935C U-936 U-936A U-937

U-938 through U-946 are more classic styles including small glaze-weld units and extended skirt "Mershon" styles

U-938 U-939 U-939A U-939B U-939C U-939D U-939E U-940

U-940A U-940B U-940C U-941 U-941A U-941B U-941C U-941D U-942

U-942A U-944 U-945 U-946

U-949 through U-969 glaze-welded units that resemble multipart styles

U-949 U-954 U-954A U-954B U-954C U-954D

U-954E U-955 U-956 U-957 U-957A U-957B

U-961 U-963 U-964 U-964A U-965

U-965A U-966 U-966A U-966B

U-967 U-967A U-968 U-969

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