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How To Order AccessoriesHow To Order >

To determine ordering reference please select from the tables below in the following order:

  • Product Type
  • Form of Protection
  • Thread Form
  • Thread Size
  • Thread Form (if applicable)
  • Thread Size (if applicable)
  • Material

When selecting and installing certified electrical equipment and components in potentially Explosive Atmospheres, it is the users responsibility to ensure that the local industry codes of practice are observed and followed, for example EN 60079-14, IEC 60079-14 or NFPA 70 / NEC 500.

Below Example:

737DTR3T25

737 Adaptor – Globally Certified – ½” (M) x ¾” (F) – Nickel Plated Brass complete with O Ring face seal.

View our range of Thread Conversions & Accessories products here -> 

To determine ordering reference please select from the tables below in the following order:
Product Type - Form of Protection - Option (if required) - Thread Form - Thread Size - Thread From (if applicable) - Thread Size (if applicable) - Material
Product TypeForm of ProtectionOptionsMale Thread FormMale Thread SizeFemale Thread FormFemale Thread SizeMaterial
From Product PageFrom Table A BelowFrom Table B BelowFrom Table C BelowFrom Table D BelowFrom Table C BelowFrom Table D BelowFrom Table E Below
737ERM2M25

TABLE A

CodeForm of Protection
DGroup II Globally Certified Ex d / AEx d & Ex e / AEx e
EGroup II Increased Safety Ex e / AEx e
GGeneral Purpose/Industrial
MGroup I Mining

TABLE B

CodeOptions
AType A – Externally secured non tamper-proof Ex d Stopper Plug or Type A – Insulated Adaptor*
BType B – Internally secured tamper-proof Ex d Stopper Plug or Type B – Insulated Adaptor*
ROptional equipment interface 'O' ring seal

TABLE C

CodeThread Form
MMetric
NNPSM
TNPT
PPG
BBSPP
IImperial (E.T.)
SBSPT

TABLE D

CodeThread Size
Metric
"M"
NPSM
"N"
NPT
"T"
PG
"P"
BSP
"B"
Imperial
"I"
BSP
"S"
1A--3⁄8"7-1⁄2"-
1161⁄2"1⁄2"91⁄2"5⁄8"1⁄2"
2203⁄4"3⁄4"113⁄4"3⁄4"3⁄4"
3251"1"13.51"1"1"
4321 1⁄4"1 1⁄4"161 1⁄4"1 1⁄4"1 1⁄4"
5401 1⁄2"1 1⁄2"211 1⁄2"1 1⁄2"1 1⁄2"
6502"2"292"2"2"
7632 1⁄2"2 1⁄2"362 1⁄2"2 1⁄2"2 1⁄2"
8753"3"423"3"3"
9903 1⁄2"3 1⁄2"483 1⁄2"3 1⁄2"3 1⁄2"
101004"4"-4"4"4"

Other variations available upon request

Nominal dimensions shown in this table may vary due to material availability. All dimensions shown are in inches unless otherwise stated. Within the parameters of its Explosive Atmosphere certification, CMP Products reserves the right to change the design and/or dimensions of any of the products illustrated without notice. For further information please contact CMP Products

**When ordered with the integral 'O' ring seal the across flats dimension shown may increase to accommodate the 'O' ring.

TABLE E

CodeMaterial
-Brass
1Aluminium
2Nylon
3Mild Steel
4Stainless Steel 316
5Nickel Plated Brass