1-190 191-225 228-376 377-435 436-699 701-861 862-914 922-969 970-999

 

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-436 through U-535 are cable top styles with a ridged skirt
U-436 U-437 U-437A U-437B U-438 U-438A U-440 U-441 U-441A U-441B
U-441C U-441D U-442 U-443 U-444 U-446 U-446A U-447 U-447A U-448
U-449 U-451 U-451A U-452 U-457 U-459 U-460 U-460A U-462
U-463 U-464 U-465 U-465A U-466 U-467 U-470 U-472 U-473
U-473A U-474 U-475 U-476 U-480 U-481 U-482 U-483 U-484 U-485
U-486 U-487 U-488 U-488A U-489 U-490 U-493 U-493A U-496 U-497
U-497A U-497B U-498 U-499 U-499A U-500 U-501 U-502 U-503 U-506 U-511
U-511A U-512 U-513 U-514 U-515 U-515A U-515B U-517 U-518 U-519
U-520 U-521 U-521A U-521B U-522 U-524 U-525 U-526 U-527 U-528
U-529 U-529A U-529B U-529C U-530 U-532 U-532A U-532B U-534
U-537 through U-699 are cable top styles with a rounded skirt
   
U-537 U-540 U-541 U-542 U-544 U-545 U-546 U-552 U-553 U-554 U-556
   
U-556A U-558 U-559 U-560 U-562 U-562A U-564 U-564A U-565 U-565A U-568
   
U-570 U-570A U-572 U-576 U-577 U-579 U-581 U-582 U-583
   
U-584 U-584A U-585 U-585A U-585B U-587 U-588 U-591 U-695 U-596 U-596A
   
U-598 U-599 U-599A U-599B U-600 U-600A U-600B U-601 U-602 U-603 U-604
   
U-605 U-606 U-606A U-608 U-608A U-608B U-610 U-610A U-611 U-611A U-611B
U-612 U-612A U-614 U-615 U-615A U-616 U-617 U-619 U-620
U-620A U-620B U-621 U-622 U-625 U-625A U-626 U-627
U-627A U-628 U-629 U-629A U-629B U-629C U-629D U-630 U-631 U-631A
U-632 U-633 U-634 U-634A U-635 U-638 U-638A U-639 U-641 U-642
U-642A U-642B U-643 U-645 U-647 U-647A U-648 U-648A U-649
U-650 U-651 U-652 U-653 U-654 U-655 U-658 U-659
U-659A U-660 U-660A U-661 U-662 U-663 U-664 U-665
U-665A U-666 U-667A U-668 U-669 U-669A U-669B
U-669C U-669D U-670 U-670A U-670B U-671 U-671A
U-672 U-673 U-675 U-675A U-675B U-679
U-680 U-680A U-680B U-680C U-681 U-681A
U-682 U-682A U-683 U-683A U-684 U-689
U-689A U-690 U-694 U-695 U-697
U-698 U-698A U-699

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