What is a D38999 connector?
MIL-DTL-38999 are miniature, high-density circular QPL and type connectors designed to meet the stringent Mil-Spec requirements set forth by the U.S. Department of Defense. The D38999 connector series come in a variety of coupling options, including bayonet and threaded, as well as in metal or composite construction.
How do I know what size my connector shell is?
Shell size is determined by dividing the shell’s diameter by . 0625 (the increment between sizes). For example, a size 8 shell has a diameter of . 50 and 8 X .
What is a coupling ring connector?
A coupling ring mounted for rotation on a plug shell has a mating set of keys and keyways that must be aligned with the registration elements of the plug shell and receptacle for insertion of the receptacle into the plug shell.
What is a jam nut connector?
A jam nut is a low profile type of nut, typically half as tall as a standard nut. Jam nuts, other types of locknuts, lock washers, and thread-locking fluid are ways to prevent vibration from loosening a bolted joint.
What is scoop proof?
Scoop-proof: Scoop-proof connectors feature a nice, long shell on the receptacle which prevents damage to the exposed contact pins during mating. Solder Cup: A connector design that typically uses potting material to permanently affix the contacts inside the connector shell.
What are Amphenol connectors?
The term Amphenol connector refers to various electronics connectors that are introduced, or made primarily by Amphenol Corp. MIL-DTL-26482 / MIL-C-26482, a circular bayonet connector. RJ21, used in aggregated telecommunications cabling. Micro ribbon, used in personal computer’s connection to printer or SCSI equipments.
What is a bayonet coupling?
[¦bā·ə′net ¦kəp·liŋ] (design engineering) A coupling in which two or more pins extend out from a plug and engage in grooves in the side of a socket.
What is the difference between a hex nut and a jam nut?
Hex jam nuts are thinner than a standard hex nut but have the same dimension across the flats and corners. A jam nut can be threaded onto a bolt and run tight against the standard nut which will lock the nut in place and prevent it from backing off. Jam nuts are sometimes used for leveling purposes as well.
Does Double nut prevent loosening?
If the thick nut is overtightened, there is the risk of thread stripping or the tensile fracture of the bolt between the two nuts. The reason why the two nut system is effective in resisting self loosening is due to the way the threads are jammed together (hence the term jam nut being frequently used for the thin nut).
What are scoop proof connectors?
What are the different series of d38999 connectors?
D38999 Part Number Breakdown. D38999 assembly instruction. List of MIL_DTL-D38999 part numbers. Previously known as MIL-C-38999, MIL-DTL-38999 connectors come in four series: Series I, Series II, Series III and Series IV.
How big is the MIL DTL 38999 circular connector?
Multi-pin MIL-DTL-38999 circular connectors with size #22 crimp removable contacts have been a standard in both military and commercial aviation since the 1970’s.
What do you need to know about d38999 fiber optic plugs?
This D38999/26 style straight plug mates with all MIL-DTL-38999 Series III receptacles. It features a ratchet coupling ring with self-locking teeth that prevent disconnection in high-vibration environments. A strain relief backshell is required, and a protective cover is recommended to protect the connector and contacts when it is not mated.
What are the different series of MIL connectors?
Introduction Previously known as MIL-C-38999, MIL-DTL-38999 connectors come in four series: Series I, Series II, Series III and Series IV. They are environmentally resistant connectors that use removable crimp contacts and have an operating range of -65 to +200°C. Series I connectors are bayonet coupled and have high-vibration properties.