100-125

126-144 145-183 185-205 206-249 250-275 280-289 290-309 315-333

335-375

National Insulator Association (NIA) logo

Threaded Glass Insulators

From North America

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

North American threaded glass pintype insulators are the most commonly collected type of insulator.  There is a tremendous amount of information available both in print and on the web for the collector.  Provided here will be just some example insulator pictures along with their associated CD's.  The CD (Consolidated Design) numbering system was developed by N. R. Woodward for threaded glass pintype insulators.  This is a small subset of what information is available, anyone interested is strongly encouraged to get the following books which will provide much more detail and information:

Note that CDs 100-144 Have a side wire groove and no inner skirts

CD 100

CD 100.2

CD_100.5

CD 100.6

CD 101

CD 102

CD 102.3

CD 102.4

CD 103

CD 103.4

CD 104

CD 105

CD 106

CD 106.1

CD 106.2

CD 106.3

CD 106.4

CD 106.5

CD 107

CD 107.2

CD 108

CD 109

CD 109.5

CD 109.7

CD 109.9

CD 110

CD 110.5

CD 110.6

CD 111

CD 112

CD 112.4

CD 113

CD 113.2

CD 114

CD 114.2

CD 115

CD 115.1

CD 116

CD 116.5

CD 117

CD 118

CD 119

CD 120

CD 121

CD 121.4

CD 122

CD 122.4

CD 123

CD 123.2

CD 124

CD 124.1

CD 124.2

CD 124.3

CD 124.5

CD 125

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100-125

126-144 145-183 185-205 206-249 250-275 280-289 290-309 315-333

335-375

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