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737 | Thread Conversions | Adaptors & Reducers Available in nickel plated brass, brass, nylon, stainless steel, aluminium

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737 Adaptors/ Adapters & Reducers for a Wide Range of Thread Sizes and Types

Adaptors/Adapters & Reducers, Globally Approved, Explosive Atmosphere Cable / Conduit Accessory

  • Used for thread conversion
  • Wide range of thread types & sizes
  • General purpose / industrial version available
  • Equipment interface ‘O’ ring seal available
  • -60°C to +200°C (metallic versions)
  • Globally marked, IECEx, ATEX, UL & cCSAus
  • Reducers Globally marked: – IECEx, ATEX, UL & cCSAus
  • Adaptors Globally marked: – 1 Step up in size: IECEx, ATEX, cCSAus – 2 Step up in size: IECEx, ATEX

In order to select and adaptor/adapters & reducers, using the below dimension tables:

1 ) Select male thread from the left hand column of Table ‘A’
2) Select the female thread size from the top of Table ‘A’, referenced ‘A**’ for adaptor/adapter and ‘R**’ for reducer
3) Using this code reference, please refer to the corresponding dimensions in Table ‘B’

Please contact us if you require assistance with selecting the correct adaptor/adapters & reducers.

Design Specification BS 6121:Part 1:1989, IEC 62444, EN 62444
Enclosure Protection IK10 to IEC 62262 (20 joules) Brass & Stainless Steel Only
ATEX Certificate CML 18ATEX1320X
Code of Protection II 2G Ex db IIC Gb, Ex eb IIC Gb, II 1D Ex ta IIIC Da
IM2 Ex db I Mb, Ex eb I Mb
(II 2G Ex eb IIC Gb, II 1D Ex ta IIIC Da only on Nylon version)
Compliance Standards EN 60079-0,1,7,31
IECEx Certificate IECEx CML 18.0177X, IECEx SIM 15.0002X
Code of Protection Ex db I Mb, Ex eb I Mb, Ex d IIC Gb, Ex eb IIC Gb, Ex ta IIIC Da
(Ex eb IIC Gb , Ex ta IIIC Da only on nylon version)
Compliance Standards IEC 60079-0,1,7,31
cCSAus Certificate 1055233
Code of Protection Class I, Groups A, B, C and D; IP66, 67, 68; Enclosure Type 4X; Class II groups E, F
and G; Class III, Ex de II, Class I, Zone 1, AEx de II;
(Not available in Nylon)
Compliance Standards C22.2 No.0, 0.5, 30, 94,CAN/CSA E60079-0,1, 7, CAN-CSA E61241-1, UL50 Edition
11, UL1203 Edition 4, UL 60079-0,1,7
UL Certificate E214221 (Reducers with NPT or Metric Threads only)
Code of Protection Class I Groups A,B,C,D; Class II Groups E,F,G; Class III
Compliance Standards UL 1203
EAC Certificate C-GB.AA87.B.00487
GOST R Certificate POCC.GB.HA46.H00140
KCs Certificate 14-GA4BO-0249X
CCOE / PESO (India) Certificate P444949
CCC Certificate 2020322313003177
Compliance Standards GB3836.1, 2, 3
INMETRO Approval TÜV 12.1332X
RETIE Approval 03866
UkrSEPRO CU 19.0372X
SANS MS-XPL21804 21.0006X
Marine Approvals LRS: 01/00173, ABS: 17-LD1619350-PDA, BV: 43180/A1 BV 17-LD1619350-PDA
Continuous Operating Temperature -60°C to +200°C (Metallic), -20°C to +60°C (Nylon)
Ingress Protection Rating ** IP66, IP67 & IP68 (when fitted with CMP sealing accessories)
Available Materials Electroless Nickel Plated Brass, Brass, Nylon, Stainless Steel, Aluminium

** Refer to Maintaining a Seal for further information on Ingress Protection Ratings

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Certificates

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737 Selection Table

Click here to view Certification by Size

Click here to view how to order

TABLE A - MALE THREAD SIZE TABLE A - FEMALE THREAD SIZE
METRIC NPT
METRIC M16 M20 M25 M32 M40 M50 M63 M75 M90 M100 ½" ¾" 1" 1¼" 1½" 2" 2½" 3" 3½" 4"
M16 A01 A04 A08 A03 A08
M20 R01 A05 A07 A12 A05 A11 A15
M25 R05 R03 A09 A14 A18 R03 A09 A16 A18
M32 R06 R06 R06 A17 A19 A24 R06 R06 A17 A19 A24
M40 R08 R08 R08 R08 A20 A29 A33 R08 R08 R08 A21 A25 A33
M50 R10 R10 R10 R10 R10 A28 A35 A49 R11 R11 R10 R10 A27 A32 A42 A52
M63 R12 R12 R12 R12 R12 A37 A48 A53 R12 R12 R12 R12 R12 A37 A44 A53
M75 R14 R14 R14 R14 R16 R15 A47 A55 A57 R14 R14 R14 R14 R14 A46 A55 A61
M90 R19 R19 R17 R19 A60 R18
M100 R20 R20 R20 A58
NPT ½" R02 A06 A07 A12 A02 A10 A15
¾" R04 R04 A09 A16 A22 R04 A09 A16 A18
1" R07 R07 R07 A13 A19 R07 R07 A17 A19 A24
1¼" R09 R09 R09 R09 A20 A23 R09 R09 R09 A20 A25 A30
1½" R10 R10 R10 R11 A26 A43 R10 R10 R10 R10 A26 A31 A41
2" R12 R12 R12 R12 R12 A36 A43 R12 R12 R12 R12 R12 A39 A50
2½" R14 R14 R14 R14 R13 R13 A40 R14 R14 R14 R14 R14 R14 A45 A54
3" R17 R19 R19 R18 R19 R19 A56 R17 R18 R18 R18 R18 R19 A51 A59 A62
3½" R17 R20 R20 R20 R20 R20 R20 R20 R20 R20 R20
4" R21 R21 R21 R21 R21 R21 R21 R21 R21
TABLE B - REDUCERS TABLE B - ADAPTORS
Table A Ref. Across
Flats ‘A’ 		Across
Corners ‘B’ 		Table A Ref. Across
Flats ‘A’ 		Across
Corners ‘B’ 		Minimum
Bore ‘C’ 		Table A Ref. Across
Flats ‘A’ 		Across
Corners ‘B’ 		Minimum
Bore ‘C’ 		Table A Ref. Across
Flats ‘A’ 		Across
Corners ‘B’ 		Minimum
Bore ‘C’
R01 24.0 26.4 A01 22.0 24.2 9.7 A23 55.0 60.5 32.1 A45 80.0 88.0 60.5
R02 27.0 29.7 A02 24.0 26.4 14.0 A24 55.0 60.5 26.0 A46 80.0 88.0 65.0
R03 30.0 33.0 A03 24.0 26.4 9.7 A25 55.0 60.5 32.0 A47 84.0 92.4 68.0
R04 31.5 34.7 A04 24.0 26.4 10.0 A26 55.0 60.5 38.0 A48 90.2 99.2 53.0
R05 31.5 34.7 A05 24.0 26.4 14.0 A27 55.0 60.5 43.6 A49 90.2 99.2 42.0
R06 37.6 41.4 A06 27.0 29.7 14.0 A28 59.8 65.8 44.2 A50 95.0 104.5 49.0
R07 41.0 45.1 A07 30.0 33.0 14.0 A29 60.0 66.0 32.1 A51 95.0 104.5 75.0
R08 46.0 50.6 A08 30.0 33.0 9.7 A30 65.0 71.5 32.0 A52 100.0 110.0 44.2
R09 50.0 55.0 A09 30.0 33.0 20.0 A31 65.0 71.5 38.0 A53 100.0 110.0 55.0
R10 55.0 60.5 A10 30.5 33.6 14.0 A32 65.0 71.5 44.2 A54 100.0 110.0 60.5
R11 60.0 66.0 A11 31.5 34.7 14.0 A33 70.0 77.0 32.0 A55 100.0 110.0 64.8
R12 70.0 77.0 A12 36.0 39.6 14.0 A34 70.0 77.0 38.0 A56 100.0 110.0 75.0
R13 79.0 86.9 A13 36.0 39.6 26.0 A35 70.0 77.0 44.2 A57 110.0 121.0 61.0
R14 80.0 88.0 A14 37.6 41.4 20.0 A36 70.0 77.0 49.0 A58 110.0 121.0 75.0
R15 84.0 92.4 A15 41.0 45.1 14.0 A37 70.0 77.0 53.0 A59 110.0 121.0 75.0
R16 90.2 99.2 A16 41.0 45.1 20.0 A38 70.0 77.0 32.1 A60 110.0 121.0 79.3
R17 95.0 104.5 A17 41.0 45.1 26.0 A39 79.0 86.9 49.0 A61 110.0 121.0 68.3
R18 98.8 108.7 A18 46.0 50.6 20.0 A40 79.0 86.9 60.0 A62 117.5 129.3 75.0
R19 100.0 110.0 A19 46.0 50.6 26.0 A41 80.0 88.0 38.0
R20 110.0 121.0 A20 46.0 50.6 32.1 A42 80.0 88.0 44.2
R21 123.0 135.3 A21 50.0 55.0 32.0 A43 80.0 88.0 49.0
R22 127.0 139.7 A22 50.0 55.0 20.0 A44 80.0 88.0 55.0
Additional sizes available upon request
Minimum reducer bore determined by female thread
Dimensions displayed in millimetres

Technical Illustration

Additional Information

The Use of Multiple Adaptors in a Single Entry for Ex Equipment

The IEC 60079-1 standard allows the use of threaded adaptors and reducers for direct entry into Flameproof type ‘d’ enclosures. In future, the female connection threads of the adaptors and/or reducers will be limited to metric or NPT only. When using thread adaptors and reducers or reducer bushings, only one is permitted for any single cable entry of Flameproof type ‘d’ (Ex d) equipment.

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Typical Installation Configurations

The illustrations provided below are indicative of some of the common methods of installation configurations adopted. These are for informative guidance only and relevant site conditions along with any specified National or International codes of practice must always take precedence. The accessories available offer a wide, flexible approach in mounting, sealing and earthing connection provision. Selection and installation according to the Engineering Specification may vary from these illustrations.

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Cable Entries Made Directly into Flameproof Type ‘d’ (Ex d)

The following page contains an illustrative example of Cable Entries Made Directly into Flameproof Type 'd' (Ex d).

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