Insulator Styles - Glass

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Here are images and information for the different style categorizations of glass insulators.

The Consolidated Design numbers (CD numbers) for battery rests are assigned by Kevin Lawless; for threaded pin-types, by N. R. Woodward; for threadless pin-types, by Ray Kligensmith; for threadless blocks, by Ray Klingensmith; for miscellaneous glass, by Marion & Evelyn Milholland; for spools, by N. R. Woodward; and for guy wire strains, by Kevin Lawless.

These descriptions of the ranges of the CD numbers are from the McDougalds' 2003 Glass Insulators Price Guide, and Insulators.info's CD Numbers Explained.

The listings at the top of the pages for individual CDs primarily include only the manufacturer and color variations listed in the McDougalds' 2003 Glass Insulators Price Guide.

The 'Foreign' categories contain insulators from outside the main countries of North America (United States, Canada, and Mexico).

Categories:

• CD 10 to 99 - Battery Rests
• CD 100 to 375 - Threaded Pin-Type
  • Side Wire Groove, Single Petticoat (CD 100 to 144.5)
  • Side Wire Groove, Double Petticoat (CD 145 to 184)
  • Pinhole Goes All The Way Through - 'Mine' Insulators (CD 185 to 189)
  • Transpositions - Multiple Wire Grooves (CD 190 to 205.5)
  • Saddle Wire Groove, Double Petticoat (CD 206 to 249)
  • Cable Top, Single Or Double Petticoat (CD 250 to 279)
  • Side Wire Groove, Triple Petticoat (CD 280 to 289.9)
  • Saddle Wire Groove, Triple Petticoat (CD 290 to 309.5)
  • Sleeves To Protect Pins For Multi-Piece Insulators (CD 310 to 314)
  • Large Power Styles, One-Piece (CD 315 to 334)
  • Large Power Styles, Multi-Piece (CD 335 to 375)
  • Foreign Additions to North American Threaded Pin-Type (CD 100 to 375)
• CD 376 to 699 - Foreign Threaded Pin-Type
  • Two- and Three-Piece, High-Tension Power (CD 376 to 399)
  • Side Wire Groove, Single or Double Petticoat (CD 400 to 499)
  • Saddle Groove, Single or Double Petticoat (CD 500 to 599)
  • Flared Skirt, Double or Triple Petticoat (CD 600 to 639)
  • Side Wire Groove with Support Arms, Single or Double Petticoat (CD 640 to 649)
  • Cutouts and Fuse Holders (CD 650 to 659)
  • One or Two Arms, Low Voltage Pairs & Drop Lines (CD 660 to 685)
  • Unique Styles with Multiple Special Features (CD 686 to 699)
• CD 700 to 799 - Threadless Pin-Type
  • "Egg", Pinhole Goes All The Way Through (CD 700 to 700.4)
  • "Egg", Pin-Type (CD 701 to 718)
  • No Wire Groove - Used With Wood Cover (CD 721 to 725)
  • "Signal", Side Wire Groove, Straight Skirt (CD 726 to 728.8)
  • "Signal", Side Wire Groove, Concave Skirt (CD 729 to 732.4)
  • "Pilgrim Hat", Side Wire Groove, One Wire Ridge(CD 734 to 735.5)
  • "Pilgrim Hat", Side Wire Groove, Two Wire Ridges (CD 735.6 to 739.5)
  • "Pilgrim Hat", Side Wire Groove, Rounded Dome (CD 740 to 742.3)
  • "Beehive", Side Wire Groove (CD 743.1 to 743.3)
  • "Bureau Knob" (CD 780)
  • Miscellaneous (CD 784 - 796)
  • Foreign Additions to North American Threadless Pin-Type (CD 700 to 799)
• CD 800 to 999 - Obsolete Foreign Threaded Pin-Type
• CD 1000 to 1199 - Non-Pintype
  • Threadless Blocks (CD 1000 to 1016)
  • Miscellaneous Glass (CD 1030 to 1040)
  • Spools and Nail Knobs (CD 1049 to 1110)
  • Guy Wire Strains (CD 1130 to 1142)
  • Foreign Additions to North American Non-Pintype (CD 1000 to 1199)

Battery Rest Insulators (CD 10 to 99)

• CD 10
• CD 12
• CD 20
• CD 22
• CD 22.5
• CD 24
• CD 25
• CD 26
• CD 28
• CD 29
• CD 29.5
• CD 30
• CD 31
• CD 33
• CD 35
• CD 36
• CD 40
• CD 45
• CD 50
• CD 51
• CD 53
• CD 55
• CD 60
• CD 61

Threaded Pin-Type Insulators (CD 100 to 375)

• Side Wire Groove, Single Petticoat (CD 100 to 144.5)
  • 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
  • CD 126
  • CD 126.1
  • CD 126.3
  • CD 126.4
  • CD 127
  • CD 127.4
  • CD 128
  • CD 128.4
  • CD 129
  • CD 130
  • CD 130.1
  • CD 130.2
  • CD 131
  • CD 131.4
  • CD 131.8
  • CD 132
  • CD 132.2
  • CD 132.4
  • CD 133
  • CD 133.1
  • CD 133.2
  • CD 133.3
  • CD 133.4
  • CD 133.5
  • CD 134
  • CD 134.4
  • CD 134.6
  • CD 135
  • CD 135.5
  • CD 136
  • CD 136.4
  • CD 136.5
  • CD 136.7
  • CD 137
  • CD 137.5
  • CD 138
  • CD 138.2
  • CD 138.9
  • CD 139
  • CD 139.8
  • CD 139.9
  • CD 140
  • CD 140.5
  • CD 141
  • CD 141.5
  • CD 141.6
  • CD 141.7
  • CD 141.8
  • CD 141.9
  • CD 142
  • CD 142.4
  • CD 143
  • CD 143.4
  • CD 143.5
  • CD 143.6
  • CD 144
  • CD 144.5
• Side Wire Groove, Double Petticoat (CD 145 to 184)
  • CD 145
  • CD 145.6
  • CD 146.4
  • CD 146.5
  • CD 147
  • CD 148
  • CD 149
  • CD 150
  • CD 151
  • CD 152
  • CD 153
  • CD 154
  • CD 154.5
  • CD 154.7
  • CD 155
  • CD 155.6
  • CD 156
  • CD 156.1
  • CD 156.2
  • CD 157
  • CD 157.5
  • CD 158
  • CD 158.1
  • CD 158.2
  • CD 158.9
  • CD 159
  • CD 160
  • CD 160.4
  • CD 160.6
  • CD 160.7
  • CD 161
  • CD 161.2
  • CD 162
  • CD 162.1
  • CD 162.3
  • CD 162.4
  • CD 162.5
  • CD 162.7
  • CD 163
  • CD 163.2
  • CD 163.4
  • CD 164
  • CD 164.4
  • CD 165
  • CD 165.1
  • CD 166
  • CD 166.2
  • CD 167
  • CD 168
  • CD 168.5
  • CD 168.6
  • CD 169
  • CD 169.5
  • CD 170
  • CD 170.1
  • CD 173
  • CD 174
  • CD 174.5
  • CD 175
  • CD 175.5
  • CD 176
  • CD 176.9
  • CD 178
  • CD 178.5
  • CD 180
  • CD 180.5
  • CD 181
  • CD 181.5
  • CD 182
  • CD 183
  • CD 184
• Pinhole Goes All The Way Through - 'Mine' Insulators (CD 185 to 189)
  • CD 185
  • CD 185.2
  • CD 186
  • CD 186.1
  • CD 186.2
  • CD 187
  • CD 188
• Transpositions - Multiple Wire Grooves (CD 190 to 205.5)
  • CD 190
  • CD 191
  • CD 192
  • CD 192.1
  • CD 193
  • CD 193.1
  • CD 194
  • CD 194.5
  • CD 195
  • CD 195.5
  • CD 196
  • CD 196.2
  • CD 196.5
  • CD 197
  • CD 199
  • CD 200
  • CD 201
  • CD 202
  • CD 203
  • CD 203.2
  • CD 204
  • CD 205
  • CD 205.5
• Saddle Wire Groove, Double Petticoat (CD 206 to 249)
  • CD 206
  • CD 206.5
  • CD 207
  • CD 207.5
  • CD 208
  • CD 210
  • CD 211
  • CD 213
  • CD 214
  • CD 216
  • CD 217
  • CD 218
  • CD 219
  • CD 220
  • CD 221
  • CD 225
  • CD 226
  • CD 226.3
  • CD 228
  • CD 228.5
  • CD 229.6
  • CD 230
  • CD 230.1
  • CD 230.2
  • CD 231
  • CD 231.2
  • CD 232
  • CD 232.1
  • CD 232.2
  • CD 233
  • CD 233.2
  • CD 234
  • CD 234.5
  • CD 235
  • CD 237
  • CD 238
  • CD 238.1
  • CD 238.2
  • CD 239
  • CD 239.2
  • CD 240
  • CD 240.2
  • CD 240.5
  • CD 241
  • CD 241.2
  • CD 242
  • CD 243
  • CD 244
  • CD 244.5
  • CD 245
  • CD 247
  • CD 247.3
  • CD 248
  • CD 249
• Cable Top, Single Or Double Petticoat (CD 250 to 279)
  • CD 250
  • CD 250.2
  • CD 251
  • CD 252
  • CD 253
  • CD 254
  • CD 256
  • CD 257
  • CD 258
  • CD 259
  • CD 260
  • CD 262
  • CD 263
  • CD 264
  • CD 265
  • CD 265.1
  • CD 266
  • CD 267
  • CD 267.5
  • CD 268
  • CD 268.5
  • CD 269
  • CD 270
  • CD 271
  • CD 272
  • CD 273
  • CD 275
• Side Wire Groove, Triple Petticoat (CD 280 to 289.9)
  • CD 280
  • CD 281
  • CD 282
  • CD 283
  • CD 284
  • CD 285
  • CD 286
  • CD 286.9
  • CD 287
  • CD 287.1
  • CD 287.2
  • CD 288
  • CD 289
  • CD 289.9
• Saddle Wire Groove, Triple Petticoat (CD 290 to 309.5)
  • CD 291
  • CD 292
  • CD 292.5
  • CD 293
  • CD 293.1
  • CD 294
  • CD 295
  • CD 296
  • CD 297
  • CD 298
  • CD 299
  • CD 299.1
  • CD 299.2
  • CD 299.7
  • CD 300
  • CD 301
  • CD 301.2
  • CD 301.5
  • CD 302
  • CD 303
  • CD 303.5
  • CD 304
  • CD 306
  • CD 307
  • CD 308
  • CD 309
  • CD 309.5
• Sleeves To Protect Pins For Multi-Piece Insulators (CD 310 to 314)
  • CD 310
  • CD 311
  • CD 313
  • CD 313.1
• Large Power Styles, One-Piece (CD 315 to 334)
  • CD 315
  • CD 316
  • CD 317
  • CD 317.5
  • CD 317.7
  • CD 317.8
  • CD 317.9
  • CD 318
  • CD 319
  • CD 320
  • CD 321
  • CD 322
  • CD 323
  • CD 324
  • CD 325
  • CD 326
  • CD 327
  • CD 328
  • CD 328.2
  • CD 330
  • CD 331
  • CD 333
• Large Power Styles, Multi-Piece (CD 335 to 375)
  • CD 338
  • CD 342
• Foreign Additions to North American Threaded Pin-Type (CD 100 to 375)
  • CD 101.6
  • CD 108.5
  • CD 112.5
  • CD 112.7
  • CD 120.2
  • CD 136.2
  • CD 161.4
  • CD 164.2
  • CD 221.2
  • CD 247.5
  • CD 251.8
  • CD 304.5
  • CD 370

Foreign Threaded Pin-Type Insulators (CD 376 to 699)

• Two- and Three-Piece, High-Tension Power (CD 376 to 399)
  • CD 378
  • CD 378.8
  • CD 379
  • CD 380
  • CD 383
  • CD 388
  • CD 390
  • CD 399
• Side Wire Groove, Single or Double Petticoat (CD 400 to 499)
  • CD 400
  • CD 407
  • CD 408
  • CD 417
  • CD 420
  • CD 420.1
  • CD 421
  • CD 422
  • CD 422.1
  • CD 423
  • CD 430
  • CD 444
  • CD 445
  • CD 446
  • CD 450
  • CD 455
  • CD 460
  • CD 470
  • CD 472
  • CD 490
  • CD 494
• Saddle Groove, Single or Double Petticoat (CD 500 to 599)
  • CD 502
  • CD 522.5
  • CD 528
  • CD 529.5
  • CD 531
  • CD 539
  • CD 540
  • CD 541
  • CD 542
  • CD 545
  • CD 563.1
  • CD 568.7
  • CD 568.9
  • CD 590
  • CD 592
• Flared Skirt, Double or Triple Petticoat (CD 600 to 639)
  • CD 600
  • CD 604
  • CD 606
  • CD 621
  • CD 625
  • CD 626
  • CD 638
• Side Wire Groove with Support Arms, Single or Double Petticoat (CD 640 to 649)
  • CD 640
  • CD 641.2
  • CD 642
• Cutouts and Fuse Holders (CD 650 to 659)
• One or Two Arms, Low Voltage Pairs & Drop Lines (CD 660 to 685)
  • CD 670
  • CD 677.7
  • CD 682
• Unique Styles with Multiple Special Features (CD 686 to 699)
  • CD 688
  • CD 690
  • CD 699

Threadless Pin-Type Insulators (CD 700 to 799)

• "Egg", Pinhole Goes All The Way Through (CD 700 to 700.1)
  • CD 700
  • CD 700.1
• "Egg", Pin-Type (CD 701 to 718)
  • CD 701
  • CD 701.1
  • CD 701.2
  • CD 701.3
  • CD 701.5
  • CD 701.6
  • CD 701.8
  • CD 718
• No Wire Groove - Used With Wood Cover (CD 721 to 725)
  • CD 721
  • CD 722
  • CD 723
  • CD 723.3
  • CD 723.5
  • CD 723.6
  • CD 724
  • CD 724.3
  • CD 724.5
  • CD 724.6
  • CD 725
• "Signal", Side Wire Groove, Straight Skirt (CD 726 to 728.8)
  • CD 726
  • CD 727
  • CD 728
  • CD 728.2
  • CD 728.4
  • CD 728.5
  • CD 728.7
  • CD 728.8
• "Signal", Side Wire Groove, Concave Skirt (CD 729 to 732.4)
  • CD 729
  • CD 729.3
  • CD 729.4
  • CD 729.6
  • CD 731
  • CD 731.2
  • CD 731.3
  • CD 732
  • CD 732.2
  • CD 732.4
• "Pilgrim Hat", Side Wire Groove, One Wire Ridge(CD 734 to 735.5)
  • CD 734
  • CD 734.1
  • CD 734.3
  • CD 734.5
  • CD 734.8
  • CD 735
  • CD 735.3
  • CD 735.5
• "Pilgrim Hat", Side Wire Groove, Two Wire Ridges (CD 735.6 to 739.5)
  • CD 735.6
  • CD 735.7
  • CD 736
  • CD 736.1
  • CD 736.3
  • CD 736.4
  • CD 736.5
  • CD 736.7
  • CD 737
  • CD 737.5
  • CD 737.6
  • CD 737.9
  • CD 738
  • CD 738.5
  • CD 738.6
  • CD 739
  • CD 739.2
  • CD 739.5
• "Pilgrim Hat", Side Wire Groove, Rounded Dome (CD 740 to 742.3)
  • CD 740
  • CD 740.1
  • CD 740.3
  • CD 740.4
  • CD 740.6
  • CD 740.7
  • CD 740.8
  • CD 742
  • CD 742.3
• "Beehive", Side Wire Groove (CD 743.1 to 743.3)
  • CD 743.1
  • CD 743.2
  • CD 743.3
• "Bureau Knob" (CD 780)
  • CD 780
• Miscellaneous (CD 784 - 796)
  • CD 784
  • CD 785
  • CD 786
  • CD 788
  • CD 790
  • CD 791
  • CD 796
• Foreign Additions to North American Threadless Pintype (CD 700 to 799)

Obsolete Foreign Pin-Type Insulators (CD 800 to 999)

• reassigned to numbers CD 376 to 699

Non-Pintype Insulators (CD 1000 to 1199)

• Threadless Blocks (CD 1000 to 1016)
  • CD 1000
  • CD 1001
  • CD 1002
  • CD 1003
  • CD 1004
  • CD 1005
  • CD 1006
  • CD 1007
  • CD 1008
  • CD 1009
  • CD 1010
  • CD 1011
  • CD 1012
  • CD 1013
  • CD 1014
  • CD 1015
  • CD 1016
  • Unassigned 1
• Miscellaneous Glass (CD 1030 to 1040)
  • CD 1030
  • CD 1038
  • CD 1040
  • Unassigned 1
• Spools and Nail Knobs (CD 1049 to 1110)
  • CD 1049
  • CD 1050
  • CD 1052
  • CD 1053
  • CD 1070
  • CD 1071
  • CD 1080
  • CD 1085
  • CD 1087
  • CD 1090
  • CD 1095
  • CD 1104
  • CD 1105
  • CD 1110
  • Unassigned 1
  • Unassigned 2
  • Unassigned 3
• Guy Wire Strains (CD 1130 to 1142)
  • CD 1130
  • CD 1131
  • CD 1138
  • CD 1140
  • Unassigned 1
  • Unassigned 2
• Foreign Additions to North American Non-Pintype (CD 1000 to 1199)
  • CD 1054
  • CD 1055
  • CD 1058

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Contact: A.C. Walker