1-190

191-225 228-376 377-435 436-699 701-861

862-914

922-964
National Insulator Association (NIA) logo

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-923

U-923A

U-923C

U-923E

U-924

U-925

U-926A

U-927A

U-927C

U-928

U-928A

U-929

U-933A

U-934

U-935

U-935A

U-935B

U-936

U-937

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

U-939

U-939B

U-940

U-940A

U-940B

U-941B

U-941E

U-944

U-945

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

U-958

U-964

U-966

U-966A

U-967

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