Table B-3: Thread Adapter Thread Sizes
Male thread Identification mark
M20 x 1.5 – 6g M20
½- 14 NPT ½ - 14 NPT
¾ - 14 NPT ¾- 14 NPT
Female thread Identification mark
M20 x 1.5 – 6H M20
½ - 14 NPT ½ - 14 NPT
G1/2 G1/2
Specific Conditions for Safe Use (X):
1. When the thread adapter or blanking plug is used with an enclosure in type of
protection increased safety “e” the entry thread shall be suitably sealed in order to
maintain the ingress protection rating (IP) of the enclosure. See certificate for
Specific Conditions.
2. The blanking plug shall not be used with an adapter.
3. Blanking Plug and Threaded Adapter shall be either NPT or Metric thread forms. G½
thread forms are only acceptable for existing (legacy) equipment installations.
Reference Manual Product certifications
00809-0100-4530 April 2019
Reference Manual 375
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