797 | Male to Male or Female to Female Adaptor Available brass, nickel plated brass, aluminium & stainless steel

Male-Male or Female-Female Adaptor, Globally Approved, Explosive Atmosphere Cable / Conduit Accessory

• Designed to convert existing threads
• General purpose / industrial version available
• Supplied with male or female threads
• Can be supplied with thread conversion
• Equipment interface ‘O’ ring seal available on male-male
• -60°C to +200°C
• Globally marked, IECEx, ATEX & cCSAus
• Can be used with 737 (not Ex d direct entry applications)

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
UKEX Certificate CML 21UKEX1238X
Code of Protection II 2 G Ex db IIC Gb,Ex eb IIC Gb, II 1 D Ex ta IIIC Da
IM2 Ex db I Mb, Ex eb I Mb
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 db IIC Gb, Ex eb IIC Gb, Ex ta IIIC Da
Compliance Standards IEC 60079-0,1,7,31
cCSAus Certificate 1055233
Code of Protection Ex de II; Class I, Groups A, B, C and D; Class I, Zone 1, AEx de II; IP66, 67, and 68, Enclosure Type 4X.
Compliance Standards C22.2 No. 0, 0.5-M1982, 30, 94, CAN/CSA E60079-0,1,7, UL 50, Edition 11, UL 1203, Edition 4,
UL 60079-0,1,7
EAC Certificate (Formerly GOST R, K & B) TC RU C-GB.AA87.B.00487
GOST R Certificate POCC.GB.HA46.H00140
KCs Certificate 14-GA4BO-0250X
CCOE / PESO (India) Certificate Ex d: P548696, Ex e: P533772
CCC Certificate 2020322313003177
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
Ingress Protection Rating ** IP66, IP67 & IP68 (when fitted with CMP sealing accessories)
Available Materials Brass, Electroless Nickel Plated Brass, Aluminium, Stainless Steel
ECAS Certificate 24-03-106290/E24-03-110155/NB0007

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

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Product Selection Table

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TypeOrdering ReferenceMale/Female Forward Thread Size 'C'Minimum
Thread Length 'E'
Male/Female Rear Thread 'A'Across Flats 'D'Across Corners 'D'Bore Diameter 'B'Protrusion 'F ' Installation
Torque (Nm)
797DT4FT4F51 ¼”0.81 ¼”
797DT5FT5F51 ½”0.81 ½”
797DT7FT7F52 ½”1.12 ½”
797DT8FT8F53 ”1.23 ”
797DT9FT9F53 ½”1.23 ½”
797DT4MT4M51 ¼”1.01 ¼”
797DT5MT5M51 ½”1.0
1 ½”
797DT7MT7M52 ½”1.62 ½”
797DT9MT9M53 ½”1.73 ½”
Dimensions shown in millimeters unless otherwise stated
TypeOrdering ReferenceMale/Female Forward Thread Size 'C'Minimum
Thread Length 'E'
Male/Female Rear Thread 'A'Across Flats 'D'Across Corners 'D'Bore Diameter 'B'Protrusion 'F 'Installation
Torque (Nm)
Female797DM1FM1FM16 X 1.515.0M16 X 1.524.026.414.034.07.0
797DM2FM2FM20 X 1.515.0M20 X 1524.026.414.036.07.0
797DM3FM3FM25 X 1.515.0M25 X 1.530.533.516.036.610.0
797DM4FM4FM32 X 1.515.0M32 X 1.536.039.627.737.015.0
797DM5FM5FM40 X 1.515.0M40 X 1.546.050.633.037.625.0
797DM6FM6FM50 X 1.515.0M50 X 1.555.060.545.540.630.0
797DM7FM7FM63 X 1.515.0M63 X 1.570.177.157.540.645.0
797DM8FM8FM75 X 1.515.0M75 X 1.580.
797DM9FM9FM90 X 2.024.0M90 X 2.0100.0110.
797DM10FM10FM100 X 2.024.0M100 X 2.0108.0118.891.052.045.0
Male797DM1MM1MM16 X 1.515.0M16 X 1.524.026.410.018.07.0
797DM2MM2MM20 X 1.515.0M20 X 1524.026.414.018.07.0
797DM3MM3MM25 X 1.515.0M25 X 1.530.533.520.018.010.0
797DM4MM4MM32 X 1.515.0M32 X 1.536.039.626.820.015.0
797DM5MM5MM40 X 1.515.0M40 X 1.546.050.632.720.025.0
797DM6MM6MM50 X 1.515.0M50 X 1.555.060.544.120.030.0
797DM7MM7MM63 X 1.515.0M63 X 1.570.177.155.620.045.0
797DM8MM8MM75 X 1.515.0M75 X 1.580.088.065.621.045.0
797DM9MM9MM90 X 2.024.0M90 X 2.0100.0110.
797DM10M10MM100 X 2.024.0M100 X 2.0108.0118.891.123.045.0
Dimensions shown in millimeters unless otherwise stated

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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Sheath Material Mechanical Properties

When specifying, selecting, evaluating or assessing cables, the type of material used for the sheathing should always be taken into account. Some of the standards mentioned above have very specific requirements for the tensile strength of cable sheathing, and in some cases these may be less than that required by IEC 60079-14.

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