Quick question can anyone identify the common name for this component? It is a connector gland for the back of a site work lamp. The plastic thread that the back nut screws to snapped inside the housing. Easy fix but trying to source a replacement is another. I've asked merchants and other electricians I know and they're all stumped. I've searched for connection gland, connector gland etc and found nothing. 

It looks like a typical gland to me with connectors inside it. 

Thanks

Neil