Circular Connector Spacing 2

[ME_Kokoletsos]

Hello all,

This is my first post here so I hope I'm in the right place.

Is anyone aware of a military specification or standard pertaining to the required minimum spacing between circular electrical connectors for aerospace applications? Specifically, I'm working with Glenair Mighty Mouse jam nut connectors and need to place them as close together as possible without interfering (more importantly without the mating connectors interfering), but I'm almost certain there has to be an established standard for military aerospace applications.

Thanks,

Richard

 

[IRstuff]

https://www.ergonomicsblog.uk/connector-spacings/

Much depends on your specific military requirements. Newer products tend to require operation with either cold-weather or hazmat gloves

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[3DDave]

Look for:
MIL-HDBK-759 Human Engineering Design Guidelines.
MIL-STD-1472 Human Engineering Design Criteria for Military Systems, Equipment and Facilities

'1472 says:

5.9.14.7 Spacing. Connectors shall be spaced far enough apart so that they can be grasped
firmly for connecting and disconnecting. Space between adjacent connectors, or between a connector
and any adjacent obstructions, shall be compatible with the size and shape of the plugs, and the type of
clothing worn by the maintainer (e.g., cold weather handwear, NBC gloves). For bare finger
operation, space between adjacent connectors shall be not less than 25 mm (1 in), except where
connectors are to be sequentially removed and replaced and 25 mm (1 in) clearance is provided in a
swept area of not less than 270° around each connector at the start of its removal/replacement
sequence. Space between adjacent connectors shall be not less than 32 mm (1.25 in) if the connector is
to be operated with gloved fingers, 64 mm (2.5 in) if the connector must be gripped firmly, and 75 mm
(3 in) if the connector is operated with mittened hands. Spacing shall be measured from the outermost
portion of the connector, i.e., from the backshell, strain relief clamp, dust cover or EMI/RFI shield.
Where high torque is required to tighten or loosen the connector, space shall be provided for use of a
connector wrench.

DOD-HDBK-743 - Anthropometry of US Military Personnel may also prove helpful

They should be available from the ASSIST DLA website.

 

[ME_Kokoletsos]

MIL-STD-1472 is great! There is a ton of useful design information in there that I'll be referencing going forward. Thank you both.