The CD numbering system was originally created by N.R.Woodward and is currently maintained by Dario DiMare. This is the main numbering system used by the insulator collecting hobby for glass insulators, and the majority of Hemingray's pintype and spool insulators fall under this numbering system.
CD 241 13⁄16" H × 2 1⁄2" W
CD 333" H × 2 1⁄4" W
CD 1002 3⁄4" H × 2 1⁄4" W
CD 100.22 5⁄8" H × 2 1⁄8" W
CD 100.63" H × 2 1⁄8" W
CD 102.13 1⁄2" H × 2 1⁄4" W
CD 1043 5⁄8" H × 2 1⁄2" W
CD 1063 1⁄2" H × 2 1⁄4" W
CD 1073 3⁄8" H × 2 3⁄8" W
CD 1123 1⁄2" H × 2" W
CD 112.43 3⁄8" H × 2 3⁄8" W
CD 1133 1⁄2" H × 2 3⁄8" W
CD 1143 5⁄8" H × 2 3⁄8" W
CD 1153 1⁄2" H × 2 3⁄8" W
CD 1164 1⁄4" H × 2 7⁄8" W
CD 1184 1⁄4" H × 2 3⁄4" W
CD 1203 3⁄8" H × 2 3⁄8" W
CD 1213 3⁄4" H × 2 1⁄2" W
CD 121.44 3⁄8" H × 2 3⁄4" W
CD 1224" H × 2 7⁄8" W
CD 122.44" H × 3" W
CD 1243 3⁄4" H × 2 1⁄2" W
CD 124.23 1⁄2" H × 2 1⁄2" W
CD 124.33 1⁄2" H × 2 1⁄2" W
CD 124.53 1⁄2" H × 3" W
CD 1254 1⁄4" H × 2 3⁄4" W
CD 126.34 1⁄4" H × 2 5⁄8" W
CD 126.44 3⁄8" H × 2 5⁄8" W
CD 127.14" H × 2 5⁄8" W
CD 127.44" H × 2 7⁄8" W
CD 1284" H × 2 5⁄8" W
CD 128.44" H × 2 5⁄8" W
CD 1293 3⁄4" H × 2 5⁄8" W
CD 130.24 1⁄2" H × 2 5⁄8" W
CD 131.44" H × 3" W
CD 1324 1⁄4" H × 3" W
CD 132.44 3⁄8" H × 4" W
CD 1334" H × 2 3⁄4" W
CD 133.13 5⁄8" H × 2 1⁄2" W
CD 133.43 7⁄8" H × 2 3⁄4" W
CD 1343 7⁄8" H × 2 7⁄8" W
CD 1364 1⁄4" H × 3" W
CD 1372 1⁄2" H × 3" W
CD 137.52 1⁄4" H × 2 3⁄4" W
CD 1424" H × 3 1⁄4" W
CD 142.44 1⁄8" H × 3 5⁄8" W
CD 1443 7⁄8" H × 3 1⁄8" W
CD 1454 1⁄4" H × 3 1⁄4" W
CD 1474 1⁄4" H × 3" W
CD 1504" H × 3 5⁄8" W
CD 1514 1⁄8" H × 3 1⁄2" W
CD 1524" H × 3 1⁄2" W
CD 1544" H × 3 5⁄8" W
CD 1554" H × 3 5⁄8" W
CD 155.64" H × 3 3⁄8" W
CD 1574" H × 3 1⁄2" W
CD 1603 1⁄4" H × 2 3⁄4" W
CD 1623 7⁄8" H × 3 1⁄4" W
CD 1633 7⁄8" H × 3 1⁄8" W
CD 1643 3⁄4" H × 3 1⁄4" W
CD 1653 7⁄8" H × 3 1⁄8" W
CD 1673 5⁄8" H × 3 1⁄8" W
CD 1683 1⁄2" H × 3 1⁄4" W
CD 1693 5⁄8" H × 3 1⁄4" W
CD 1754" H × 3 1⁄4" W
CD 176.94 1⁄4" H × 5 1⁄4" W
CD 1784 1⁄8" H × 4 3⁄4" W
CD 1833 3⁄4" H × 4 5⁄8" W
CD 1853 1⁄2" H × 2 7⁄8" W
CD 185.22 3⁄4" H × 2 3⁄4" W
CD 1864" H × 3 1⁄4" W
CD 186.13 7⁄8" H × 3 1⁄4" W
CD 186.23 7⁄8" H × 3 1⁄4" W
CD 190/1914 3⁄8" H × 3 5⁄8" W
CD 1965 1⁄2" H × 4 1⁄4" W
CD 196.24 3⁄8" H × 3 7⁄8" W
CD 196.54 1⁄2" H × 4 1⁄4" W
CD 1973 7⁄8" H × 4" W
CD 2014 3⁄4" H × 3 5⁄8" W
CD 2024 3⁄8" H × 3 3⁄4" W
CD 2033 7⁄8" H × 3 1⁄4" W
CD 2044" H × 3" W
CD 2054 1⁄2" H × 3 1⁄4" W
CD 2084 1⁄2" H × 3 5⁄8" W
CD 2104 1⁄4" H × 3 1⁄2" W
CD 2134 1⁄4" H × 3 5⁄8" W
CD 2144 1⁄4" H × 3 5⁄8" W
CD 2164" H × 3 1⁄4" W
CD 2183 3⁄4" H × 3 3⁄8" W
CD 2193 5⁄8" H × 3 3⁄8" W
CD 2204 1⁄4" H × 3 3⁄4" W
CD 2215" H × 4" W
CD 224.55" H × 4" W
CD 2303" H × 4" W
CD 230.13 1⁄2" H × 4" W
CD 2313 1⁄2" H × 5 1⁄8" W
CD 231.23 1⁄2" H × 4 1⁄4" W
CD 2323 1⁄4" H × 4 7⁄8" W
CD 232.13 1⁄2" H × 4 7⁄8" W
CD 232.23 7⁄8" H × 4 7⁄8" W
CD 2333" H × 3 3⁄4" W
CD 233.23" H × 3 3⁄4" W
CD 2374" H × 4 5⁄8" W
CD 2384 1⁄4" H × 5 1⁄2" W
CD 238.13 5⁄8" H × 5 1⁄2" W
CD 238.64 1⁄4" H × 5 7⁄8" W
CD 2394 1⁄4" H × 5 5⁄8" W
CD 239.25 1⁄4" H × 7" W
CD 2412 3⁄4" H × 4" W
CD 241.23" H × 4" W
CD 2423 1⁄4" H × 5" W
CD 2433 3⁄4" H × 6" W
CD 2496 5⁄8" H × 8 1⁄2" W
CD 2513 3⁄4" H × 3 1⁄4" W
CD 2523 3⁄4" H × 3 1⁄4" W
CD 2545 3⁄4" H × 4 1⁄4" W
CD 2575" H × 3 1⁄4" W
CD 2635 1⁄8" H × 4" W
CD 2714 3⁄8" H × 5" W
CD 2803 3⁄4" H × 4 1⁄4" W
CD 280.13 3⁄4" H × 4 1⁄4" W
CD 2813 3⁄4" H × 4 5⁄8" W
CD 2824 3⁄4" H × 5 1⁄2" W
CD 2835 7⁄8" H × 7" W
CD 286.96 1⁄2" H × 7 1⁄4" W
CD 287.13 5⁄8" H × 4 1⁄4" W
CD 287.23 5⁄8" H × 3 1⁄2" W
CD 2914" H × 4 1⁄4" W
CD 2954" H × 4 3⁄4" W
CD 299.74 1⁄4" H × 5 1⁄2" W
CD 301.54 5⁄8" H × 7 1⁄4" W
CD 3024 3⁄4" H × 7" W
CD 303/31012" H × 9" W
CD 303.57 3⁄4" H × 8" W
CD 304/31012" H × 9" W
CD 3074 7⁄8" H × 4 3⁄4" W
CD 3095 7⁄8" H × 7" W
CD 309.510" H × 7 1⁄2" W
CD 3177 1⁄2" H × 7" W
CD 317.55" H × 4 1⁄2" W
CD 317.74 5⁄8" H × 9" W
CD 317.95 1⁄4" H × 8" W
CD 732.24 1⁄8" H × 3" W
CD 10253 1⁄2" H × 3 1⁄2" W
CD 10303 11⁄16" H × 2 5⁄8" W
CD 10325 3⁄8" H × 1 1⁄2" W
CD 10344 3⁄8" H × 2 1⁄4" W
CD 10451 13⁄16" H × 1 5⁄8" W
CD 10461 7⁄16" H × 1 13⁄16" W
CD 10492" H × 2 7⁄8" W
CD 10502 1⁄8" H × 2 1⁄4" W
CD 10522 3⁄4" H × 3" W
CD 10532 1⁄8" H × 2 3⁄16" W
CD 10573 1⁄2" H × 3 1⁄4" W
CD 10582 3⁄4" H × 2 3⁄4" W
CD 10703 1⁄8" H × 4" W
CD 10713 1⁄4" H × 3" W
CD 10732 13⁄16" H × 2 9⁄16" W
CD 10742 5⁄8" H × 2 5⁄8" W
CD 10801 7⁄8" H × 1 1⁄2" W
CD 10851 1⁄2" H × 1 1⁄2" W
CD 10871 7⁄8" H × 2" W
CD 10903 3⁄8" H × 2 3⁄4" W
CD 10941 7⁄8" H × 1 7⁄8" W
CD 10951 7⁄8" H × 1 7⁄8" W
CD 11031 1⁄16" H × 1 5⁄8" W
CD 11041 7⁄8" H × 2" W
CD 1104.11 3⁄4" H × 2" W
CD 11062 1⁄2" H × 2 1⁄2" W
CD 11102 3⁄4" H × 2 3⁄4" W
CD 11382 1⁄4" H × 2 5⁄8" W
CD 11402 3⁄4" H × 3 1⁄4" W